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< span > Welcome to contribute to Chinese-to-English translation! Please visit < a href = "https://github.com/krahets/hello-algo/issues/914" > #914< / a > for more details.< / span >
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0.2 How to read
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Chapter 0. Preface
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0.1 About this book
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0.2 How to read
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0.2 How to read
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0.2.1 Writing conventions
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0.2.2 Efficient learning via animated illustrations
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0.2.3 Deepen understanding through coding practice
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0.2.4 Learning together in discussion
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0.2.5 Algorithm learning path
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Chapter 1. Encounter with algorithms
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1.1 Algorithms are everywhere
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1.2 What is an algorithm
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Chapter 2. Complexity analysis
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Chapter 2. Complexity analysis
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2.1 Algorithm efficiency assessment
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2.2 Iteration and recursion
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2.3 Time complexity
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2.4 Space complexity
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Chapter 3. Data structures
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Chapter 3. Data structures
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3.1 Classification of data structures
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3.2 Basic data types
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3.3 Number encoding *
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3.4 Character encoding *
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Chapter 4. Array and linked list
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Chapter 4. Array and linked list
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4.2 Linked list
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4.4 Memory and cache *
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Chapter 5. Stack and queue
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Chapter 5. Stack and queue
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5.1 Stack
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5.3 Double-ended queue
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Chapter 6. Hash table
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6.1 Hash table
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6.2 Hash collision
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6.3 Hash algorithm
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Chapter 7. Tree
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Chapter 7. Tree
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7.1 Binary tree
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7.2 Binary tree traversal
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7.3 Array Representation of tree
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7.4 Binary Search tree
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7.5 AVL tree *
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Chapter 8. Heap
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8.1 Heap
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8.2 Building a heap
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8.3 Top-k problem
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9.2 Basic graph operations
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9.3 Graph traversal
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Chapter 10. Searching
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Chapter 10. Searching
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10.1 Binary search
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10.2 Binary search insertion
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10.3 Binary search boundaries
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10.4 Hashing optimization strategies
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10.5 Search algorithms revisited
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10.6 Summary
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< a href = "../../chapter_sorting/" class = "md-nav__link " >
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Chapter 11. Sorting
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Chapter 11. Sorting
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11.1 Sorting algorithms
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11.2 Selection sort
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11.3 Bubble sort
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11.4 Insertion sort
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11.5 Quick sort
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11.6 Merge sort
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11.7 Heap sort
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11.8 Bucket sort
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11.9 Counting sort
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11.10 Radix sort
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11.11 Summary
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Chapter 12. Divide and conquer
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Chapter 12. Divide and conquer
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12.1 Divide and conquer algorithms
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12.2 Divide and conquer search strategy
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12.3 Building binary tree problem
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12.4 Tower of Hanoi Problem
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12.5 Summary
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Chapter 13. Backtracking
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Chapter 13. Backtracking
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13.1 Backtracking algorithms
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13.2 Permutation problem
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13.3 Subset sum problem
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13.4 n queens problem
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13.5 Summary
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Chapter 14. Dynamic programming
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Chapter 14. Dynamic programming
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14.1 Introduction to dynamic programming
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14.2 Characteristics of DP problems
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14.3 DP problem-solving approach¶
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14.4 0-1 Knapsack problem
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14.5 Unbounded knapsack problem
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14.6 Edit distance problem
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14.7 Summary
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Chapter 15. Greedy
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Chapter 15. Greedy
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15.1 Greedy algorithms
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15.2 Fractional knapsack problem
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15.3 Maximum capacity problem
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15.4 Maximum product cutting problem
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15.5 Summary
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Chapter 16. Appendix
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Chapter 16. Appendix
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16.1 Installation
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16.2 Contributing
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16.3 Terminology
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References
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References
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Table of contents
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0.2.1 Writing conventions
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0.2.2 Efficient learning via animated illustrations
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0.2.3 Deepen understanding through coding practice
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0.2.4 Learning together in discussion
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0.2.5 Algorithm learning path
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< h1 id = "02-how-to-read" > 0.2 How to read< a class = "headerlink" href = "#02-how-to-read" title = "Permanent link" > ¶ < / a > < / h1 >
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< p class = "admonition-title" > Tip< / p >
< p > For the best reading experience, it is recommended that you read through this section.< / p >
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< h2 id = "021-writing-conventions" > 0.2.1 Writing conventions< a class = "headerlink" href = "#021-writing-conventions" title = "Permanent link" > ¶ < / a > < / h2 >
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< ul >
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< li > Chapters marked with '*' after the title are optional and contain relatively challenging content. If you are short on time, it is advisable to skip them.< / li >
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< li > Technical terms will be in boldface (in the print and PDF versions) or underlined (in the web version), for instance, < u > array< / u > . It's advisable to familiarize yourself with these for better comprehension of technical texts.< / li >
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< li > < strong > Bolded text< / strong > indicates key content or summary statements, which deserve special attention.< / li >
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< li > Words and phrases with specific meanings are indicated with “quotation marks” to avoid ambiguity.< / li >
< li > When it comes to terms that are inconsistent between programming languages, this book follows Python, for example using < code > None< / code > to mean < code > null< / code > .< / li >
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< li > This book partially ignores the comment conventions for programming languages in exchange for a more compact layout of the content. The comments primarily consist of three types: title comments, content comments, and multi-line comments.< / li >
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< / ul >
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< div class = "tabbed-set tabbed-alternate" data-tabs = "1:13" > < input checked = "checked" id = "__tabbed_1_1" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_2" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_3" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_4" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_5" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_6" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_7" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_8" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_9" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_10" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_11" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_12" name = "__tabbed_1" type = "radio" / > < input id = "__tabbed_1_13" name = "__tabbed_1" type = "radio" / > < div class = "tabbed-labels" > < label for = "__tabbed_1_1" > Python< / label > < label for = "__tabbed_1_2" > C++< / label > < label for = "__tabbed_1_3" > Java< / label > < label for = "__tabbed_1_4" > C#< / label > < label for = "__tabbed_1_5" > Go< / label > < label for = "__tabbed_1_6" > Swift< / label > < label for = "__tabbed_1_7" > JS< / label > < label for = "__tabbed_1_8" > TS< / label > < label for = "__tabbed_1_9" > Dart< / label > < label for = "__tabbed_1_10" > Rust< / label > < label for = "__tabbed_1_11" > C< / label > < label for = "__tabbed_1_12" > Kotlin< / label > < label for = "__tabbed_1_13" > Zig< / label > < / div >
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< div class = "tabbed-content" >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-0-1" name = "__codelineno-0-1" href = "#__codelineno-0-1" > < / a > < span class = "sd" > " " " Header comments for labeling functions, classes, test samples, etc" " " < / span >
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< a id = "__codelineno-0-2" name = "__codelineno-0-2" href = "#__codelineno-0-2" > < / a >
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< a id = "__codelineno-0-3" name = "__codelineno-0-3" href = "#__codelineno-0-3" > < / a > < span class = "c1" > # Comments for explaining details< / span >
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< a id = "__codelineno-0-4" name = "__codelineno-0-4" href = "#__codelineno-0-4" > < / a >
< a id = "__codelineno-0-5" name = "__codelineno-0-5" href = "#__codelineno-0-5" > < / a > < span class = "sd" > " " " < / span >
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< a id = "__codelineno-0-6" name = "__codelineno-0-6" href = "#__codelineno-0-6" > < / a > < span class = "sd" > Multiline< / span >
< a id = "__codelineno-0-7" name = "__codelineno-0-7" href = "#__codelineno-0-7" > < / a > < span class = "sd" > comments< / span >
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< a id = "__codelineno-0-8" name = "__codelineno-0-8" href = "#__codelineno-0-8" > < / a > < span class = "sd" > " " " < / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-1-1" name = "__codelineno-1-1" href = "#__codelineno-1-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-1-2" name = "__codelineno-1-2" href = "#__codelineno-1-2" > < / a >
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< a id = "__codelineno-1-3" name = "__codelineno-1-3" href = "#__codelineno-1-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-1-4" name = "__codelineno-1-4" href = "#__codelineno-1-4" > < / a >
< a id = "__codelineno-1-5" name = "__codelineno-1-5" href = "#__codelineno-1-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-1-6" name = "__codelineno-1-6" href = "#__codelineno-1-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-1-7" name = "__codelineno-1-7" href = "#__codelineno-1-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-1-8" name = "__codelineno-1-8" href = "#__codelineno-1-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-2-1" name = "__codelineno-2-1" href = "#__codelineno-2-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-2-2" name = "__codelineno-2-2" href = "#__codelineno-2-2" > < / a >
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< a id = "__codelineno-2-3" name = "__codelineno-2-3" href = "#__codelineno-2-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-2-4" name = "__codelineno-2-4" href = "#__codelineno-2-4" > < / a >
< a id = "__codelineno-2-5" name = "__codelineno-2-5" href = "#__codelineno-2-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-2-6" name = "__codelineno-2-6" href = "#__codelineno-2-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-2-7" name = "__codelineno-2-7" href = "#__codelineno-2-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-2-8" name = "__codelineno-2-8" href = "#__codelineno-2-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-3-1" name = "__codelineno-3-1" href = "#__codelineno-3-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-3-2" name = "__codelineno-3-2" href = "#__codelineno-3-2" > < / a >
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< a id = "__codelineno-3-3" name = "__codelineno-3-3" href = "#__codelineno-3-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-3-4" name = "__codelineno-3-4" href = "#__codelineno-3-4" > < / a >
< a id = "__codelineno-3-5" name = "__codelineno-3-5" href = "#__codelineno-3-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-3-6" name = "__codelineno-3-6" href = "#__codelineno-3-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-3-7" name = "__codelineno-3-7" href = "#__codelineno-3-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-3-8" name = "__codelineno-3-8" href = "#__codelineno-3-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-4-1" name = "__codelineno-4-1" href = "#__codelineno-4-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-4-2" name = "__codelineno-4-2" href = "#__codelineno-4-2" > < / a >
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< a id = "__codelineno-4-3" name = "__codelineno-4-3" href = "#__codelineno-4-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-4-4" name = "__codelineno-4-4" href = "#__codelineno-4-4" > < / a >
< a id = "__codelineno-4-5" name = "__codelineno-4-5" href = "#__codelineno-4-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-4-6" name = "__codelineno-4-6" href = "#__codelineno-4-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-4-7" name = "__codelineno-4-7" href = "#__codelineno-4-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-4-8" name = "__codelineno-4-8" href = "#__codelineno-4-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-5-1" name = "__codelineno-5-1" href = "#__codelineno-5-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-5-2" name = "__codelineno-5-2" href = "#__codelineno-5-2" > < / a >
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< a id = "__codelineno-5-3" name = "__codelineno-5-3" href = "#__codelineno-5-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-5-4" name = "__codelineno-5-4" href = "#__codelineno-5-4" > < / a >
< a id = "__codelineno-5-5" name = "__codelineno-5-5" href = "#__codelineno-5-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-5-6" name = "__codelineno-5-6" href = "#__codelineno-5-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-5-7" name = "__codelineno-5-7" href = "#__codelineno-5-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-5-8" name = "__codelineno-5-8" href = "#__codelineno-5-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-6-1" name = "__codelineno-6-1" href = "#__codelineno-6-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-6-2" name = "__codelineno-6-2" href = "#__codelineno-6-2" > < / a >
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< a id = "__codelineno-6-3" name = "__codelineno-6-3" href = "#__codelineno-6-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-6-4" name = "__codelineno-6-4" href = "#__codelineno-6-4" > < / a >
< a id = "__codelineno-6-5" name = "__codelineno-6-5" href = "#__codelineno-6-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-6-6" name = "__codelineno-6-6" href = "#__codelineno-6-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-6-7" name = "__codelineno-6-7" href = "#__codelineno-6-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-6-8" name = "__codelineno-6-8" href = "#__codelineno-6-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-7-1" name = "__codelineno-7-1" href = "#__codelineno-7-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-7-2" name = "__codelineno-7-2" href = "#__codelineno-7-2" > < / a >
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< a id = "__codelineno-7-3" name = "__codelineno-7-3" href = "#__codelineno-7-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-7-4" name = "__codelineno-7-4" href = "#__codelineno-7-4" > < / a >
< a id = "__codelineno-7-5" name = "__codelineno-7-5" href = "#__codelineno-7-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-7-6" name = "__codelineno-7-6" href = "#__codelineno-7-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-7-7" name = "__codelineno-7-7" href = "#__codelineno-7-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-7-8" name = "__codelineno-7-8" href = "#__codelineno-7-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
< / div >
< div class = "tabbed-block" >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-8-1" name = "__codelineno-8-1" href = "#__codelineno-8-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-8-2" name = "__codelineno-8-2" href = "#__codelineno-8-2" > < / a >
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< a id = "__codelineno-8-3" name = "__codelineno-8-3" href = "#__codelineno-8-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-8-4" name = "__codelineno-8-4" href = "#__codelineno-8-4" > < / a >
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< a id = "__codelineno-8-6" name = "__codelineno-8-6" href = "#__codelineno-8-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-8-7" name = "__codelineno-8-7" href = "#__codelineno-8-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-8-8" name = "__codelineno-8-8" href = "#__codelineno-8-8" > < / a > < span class = "cm" > */< / span >
< / code > < / pre > < / div >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-9-1" name = "__codelineno-9-1" href = "#__codelineno-9-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-9-2" name = "__codelineno-9-2" href = "#__codelineno-9-2" > < / a >
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< a id = "__codelineno-9-3" name = "__codelineno-9-3" href = "#__codelineno-9-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-9-4" name = "__codelineno-9-4" href = "#__codelineno-9-4" > < / a >
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< a id = "__codelineno-9-6" name = "__codelineno-9-6" href = "#__codelineno-9-6" > < / a > < span class = "sd" > * Multiline< / span >
< a id = "__codelineno-9-7" name = "__codelineno-9-7" href = "#__codelineno-9-7" > < / a > < span class = "sd" > * comments< / span >
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< a id = "__codelineno-9-8" name = "__codelineno-9-8" href = "#__codelineno-9-8" > < / a > < span class = "sd" > */< / span >
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< a id = "__codelineno-10-3" name = "__codelineno-10-3" href = "#__codelineno-10-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-10-4" name = "__codelineno-10-4" href = "#__codelineno-10-4" > < / a >
< a id = "__codelineno-10-5" name = "__codelineno-10-5" href = "#__codelineno-10-5" > < / a > < span class = "cm" > /**< / span >
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< a id = "__codelineno-10-6" name = "__codelineno-10-6" href = "#__codelineno-10-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-10-7" name = "__codelineno-10-7" href = "#__codelineno-10-7" > < / a > < span class = "cm" > * comments< / span >
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< a id = "__codelineno-10-8" name = "__codelineno-10-8" href = "#__codelineno-10-8" > < / a > < span class = "cm" > */< / span >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-11-1" name = "__codelineno-11-1" href = "#__codelineno-11-1" > < / a > < span class = "cm" > /* Header comments for labeling functions, classes, test samples, etc */< / span >
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< a id = "__codelineno-11-2" name = "__codelineno-11-2" href = "#__codelineno-11-2" > < / a >
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< a id = "__codelineno-11-3" name = "__codelineno-11-3" href = "#__codelineno-11-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
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< a id = "__codelineno-11-4" name = "__codelineno-11-4" href = "#__codelineno-11-4" > < / a >
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< a id = "__codelineno-11-5" name = "__codelineno-11-5" href = "#__codelineno-11-5" > < / a > < span class = "cm" > /**< / span >
< a id = "__codelineno-11-6" name = "__codelineno-11-6" href = "#__codelineno-11-6" > < / a > < span class = "cm" > * Multiline< / span >
< a id = "__codelineno-11-7" name = "__codelineno-11-7" href = "#__codelineno-11-7" > < / a > < span class = "cm" > * comments< / span >
< a id = "__codelineno-11-8" name = "__codelineno-11-8" href = "#__codelineno-11-8" > < / a > < span class = "cm" > */< / span >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-12-1" name = "__codelineno-12-1" href = "#__codelineno-12-1" > < / a > < span class = "c1" > // Header comments for labeling functions, classes, test samples, etc< / span >
< a id = "__codelineno-12-2" name = "__codelineno-12-2" href = "#__codelineno-12-2" > < / a >
< a id = "__codelineno-12-3" name = "__codelineno-12-3" href = "#__codelineno-12-3" > < / a > < span class = "c1" > // Comments for explaining details.< / span >
< a id = "__codelineno-12-4" name = "__codelineno-12-4" href = "#__codelineno-12-4" > < / a >
< a id = "__codelineno-12-5" name = "__codelineno-12-5" href = "#__codelineno-12-5" > < / a > < span class = "c1" > // Multiline< / span >
< a id = "__codelineno-12-6" name = "__codelineno-12-6" href = "#__codelineno-12-6" > < / a > < span class = "c1" > // comments< / span >
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< / code > < / pre > < / div >
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< h2 id = "022-efficient-learning-via-animated-illustrations" > 0.2.2 Efficient learning via animated illustrations< a class = "headerlink" href = "#022-efficient-learning-via-animated-illustrations" title = "Permanent link" > ¶ < / a > < / h2 >
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< p > Compared with text, videos and pictures have a higher density of information and are more structured, making them easier to understand. In this book, < strong > key and difficult concepts are mainly presented through animations and illustrations< / strong > , with text serving as explanations and supplements.< / p >
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< p > When encountering content with animations or illustrations as shown in Figure 0-2, < strong > prioritize understanding the figure, with text as supplementary< / strong > , integrating both for a comprehensive understanding.< / p >
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< p > < a class = "glightbox" href = "../../index.assets/animation.gif" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Animated illustration example" class = "animation-figure" src = "../../index.assets/animation.gif" / > < / a > < / p >
< p align = "center" > Figure 0-2 Animated illustration example < / p >
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< h2 id = "023-deepen-understanding-through-coding-practice" > 0.2.3 Deepen understanding through coding practice< a class = "headerlink" href = "#023-deepen-understanding-through-coding-practice" title = "Permanent link" > ¶ < / a > < / h2 >
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< p > The source code of this book is hosted on the < a href = "https://github.com/krahets/hello-algo" > GitHub Repository< / a > . As shown in Figure 0-3, < strong > the source code comes with test examples and can be executed with just a single click< / strong > .< / p >
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< p > If time permits, < strong > it's recommended to type out the code yourself< / strong > . If pressed for time, at least read and run all the codes.< / p >
< p > Compared to just reading code, writing code often yields more learning. < strong > Learning by doing is the real way to learn.< / strong > < / p >
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< p > < a class = "glightbox" href = "../../index.assets/running_code.gif" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Running code example" class = "animation-figure" src = "../../index.assets/running_code.gif" / > < / a > < / p >
< p align = "center" > Figure 0-3 Running code example < / p >
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< p > Setting up to run the code involves three main steps.< / p >
< p > < strong > Step 1: Install a local programming environment< / strong > . Follow the < a href = "https://www.hello-algo.com/chapter_appendix/installation/" > tutorial< / a > in the appendix for installation, or skip this step if already installed.< / p >
< p > < strong > Step 2: Clone or download the code repository< / strong > . Visit the < a href = "https://github.com/krahets/hello-algo" > GitHub Repository< / a > .< / p >
< p > If < a href = "https://git-scm.com/downloads" > Git< / a > is installed, use the following command to clone the repository:< / p >
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< div class = "highlight" > < pre > < span > < / span > < code > < a id = "__codelineno-13-1" name = "__codelineno-13-1" href = "#__codelineno-13-1" > < / a > git< span class = "w" > < / span > clone< span class = "w" > < / span > https://github.com/krahets/hello-algo.git
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< / code > < / pre > < / div >
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< p > Alternatively, you can also click the "Download ZIP" button at the location shown in Figure 0-4 to directly download the code as a compressed ZIP file. Then, you can simply extract it locally.< / p >
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< p > < a class = "glightbox" href = "../suggestions.assets/download_code.png" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Cloning repository and downloading code" class = "animation-figure" src = "../suggestions.assets/download_code.png" / > < / a > < / p >
< p align = "center" > Figure 0-4 Cloning repository and downloading code < / p >
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< p > < strong > Step 3: Run the source code< / strong > . As shown in Figure 0-5, for the code block labeled with the file name at the top, we can find the corresponding source code file in the < code > codes< / code > folder of the repository. These files can be executed with a single click, which will help you save unnecessary debugging time and allow you to focus on learning.< / p >
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< p > < a class = "glightbox" href = "../suggestions.assets/code_md_to_repo.png" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Code block and corresponding source code file" class = "animation-figure" src = "../suggestions.assets/code_md_to_repo.png" / > < / a > < / p >
< p align = "center" > Figure 0-5 Code block and corresponding source code file < / p >
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< h2 id = "024-learning-together-in-discussion" > 0.2.4 Learning together in discussion< a class = "headerlink" href = "#024-learning-together-in-discussion" title = "Permanent link" > ¶ < / a > < / h2 >
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< p > While reading this book, please don't skip over the points that you didn't learn. < strong > Feel free to post your questions in the comment section< / strong > . We will be happy to answer them and can usually respond within two days.< / p >
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< p > As illustrated in Figure 0-6, each chapter features a comment section at the bottom. I encourage you to pay attention to these comments. They not only expose you to others' encountered problems, aiding in identifying knowledge gaps and sparking deeper contemplation, but also invite you to generously contribute by answering fellow readers' inquiries, sharing insights, and fostering mutual improvement.< / p >
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< p > < a class = "glightbox" href = "../../index.assets/comment.gif" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Comment section example" class = "animation-figure" src = "../../index.assets/comment.gif" / > < / a > < / p >
< p align = "center" > Figure 0-6 Comment section example < / p >
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< h2 id = "025-algorithm-learning-path" > 0.2.5 Algorithm learning path< a class = "headerlink" href = "#025-algorithm-learning-path" title = "Permanent link" > ¶ < / a > < / h2 >
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< p > Overall, the journey of mastering data structures and algorithms can be divided into three stages:< / p >
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< ol >
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< li > < strong > Stage 1: Introduction to algorithms< / strong > . We need to familiarize ourselves with the characteristics and usage of various data structures and learn about the principles, processes, uses, and efficiency of different algorithms.< / li >
< li > < strong > Stage 2: Practicing algorithm problems< / strong > . It is recommended to start from popular problems, such as < a href = "https://leetcode.cn/studyplan/coding-interviews/" > Sword for Offer< / a > and < a href = "https://leetcode.cn/studyplan/top-100- liked/" > LeetCode Hot 100< / a > , and accumulate at least 100 questions to familiarize yourself with mainstream algorithmic problems. Forgetfulness can be a challenge when you start practicing, but rest assured that this is normal. We can follow the "Ebbinghaus Forgetting Curve" to review the questions, and usually after 3~5 rounds of repetitions, we will be able to memorize them.< / li >
< li > < strong > Stage 3: Building the knowledge system< / strong > . In terms of learning, we can read algorithm column articles, solution frameworks, and algorithm textbooks to continuously enrich the knowledge system. In terms of practicing, we can try advanced strategies, such as categorizing by topic, multiple solutions for a single problem, and one solution for multiple problems, etc. Insights on these strategies can be found in various communities.< / li >
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< / ol >
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< p > As shown in Figure 0-7, this book mainly covers “Stage 1,” aiming to help you more efficiently embark on Stages 2 and 3.< / p >
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< p > < a class = "glightbox" href = "../suggestions.assets/learning_route.png" data-type = "image" data-width = "100%" data-height = "auto" data-desc-position = "bottom" > < img alt = "Algorithm learning path" class = "animation-figure" src = "../suggestions.assets/learning_route.png" / > < / a > < / p >
< p align = "center" > Figure 0-7 Algorithm learning path < / p >
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< svg xmlns = "http://www.w3.org/2000/svg" viewBox = "0 0 512 512" > <!-- ! Font Awesome Free 6.5.1 by @fontawesome - https://fontawesome.com License - https://fontawesome.com/license/free (Icons: CC BY 4.0, Fonts: SIL OFL 1.1, Code: MIT License) Copyright 2023 Fonticons, Inc. --> < path d = "M389.2 48h70.6L305.6 224.2 487 464H345L233.7 318.6 106.5 464H35.8l164.9-188.5L26.8 48h145.6l100.5 132.9L389.2 48zm-24.8 373.8h39.1L151.1 88h-42l255.3 333.8z" / > < / svg >
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< script > document $ . subscribe ( ( ) => { const lightbox = GLightbox ( { "touchNavigation" : true , "loop" : false , "zoomable" : true , "draggable" : false , "openEffect" : "zoom" , "closeEffect" : "zoom" , "slideEffect" : "none" } ) ; } ) < / script > < / body >
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