mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-24 11:16:27 +08:00
Fix Python code styles.
Update hash_map.
This commit is contained in:
parent
15efaca85d
commit
a95fe26303
8 changed files with 38 additions and 72 deletions
2
.gitignore
vendored
2
.gitignore
vendored
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@ -9,5 +9,5 @@ hello-algo.iml
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# mkdocs files
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# mkdocs files
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site/
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site/
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.cache/
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.cache/
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codes/scripts
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scripts/
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docs/overrides/
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docs/overrides/
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@ -9,7 +9,7 @@ sys.path.append(osp.dirname(osp.dirname(osp.abspath(__file__))))
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from include import *
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from include import *
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""" 随机访问元素 """
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""" 随机访问元素 """
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def randomAccess(nums):
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def random_access(nums):
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# 在区间 [0, len(nums)-1] 中随机抽取一个数字
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# 在区间 [0, len(nums)-1] 中随机抽取一个数字
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random_index = random.randint(0, len(nums) - 1)
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random_index = random.randint(0, len(nums) - 1)
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# 获取并返回随机元素
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# 获取并返回随机元素
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@ -69,7 +69,7 @@ if __name__ == "__main__":
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print("数组 nums =", nums)
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print("数组 nums =", nums)
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""" 随机访问 """
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""" 随机访问 """
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random_num = randomAccess(nums)
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random_num = random_access(nums)
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print("在 nums 中获取随机元素", random_num)
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print("在 nums 中获取随机元素", random_num)
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""" 长度扩展 """
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""" 长度扩展 """
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@ -36,10 +36,10 @@ def linear(n):
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mapp[i] = str(i)
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mapp[i] = str(i)
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""" 线性阶(递归实现) """
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""" 线性阶(递归实现) """
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def linearRecur(n):
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def linear_recur(n):
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print("递归 n =", n)
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print("递归 n =", n)
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if n == 1: return
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if n == 1: return
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linearRecur(n - 1)
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linear_recur(n - 1)
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""" 平方阶 """
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""" 平方阶 """
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def quadratic(n):
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def quadratic(n):
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@ -69,7 +69,7 @@ if __name__ == "__main__":
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constant(n)
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constant(n)
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# 线性阶
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# 线性阶
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linear(n)
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linear(n)
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linearRecur(n)
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linear_recur(n)
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# 平方阶
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# 平方阶
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quadratic(n)
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quadratic(n)
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quadratic_recur(n)
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quadratic_recur(n)
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@ -6,11 +6,10 @@ Author: msk397 (machangxinq@gmail.com)
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""" 键值对 int->String """
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""" 键值对 int->String """
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class Entry:
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class Entry:
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def __init__(self, key, val):
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def __init__(self, key: int, val: str):
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self.key = key
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self.key = key
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self.val = val
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self.val = val
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""" 基于数组简易实现的哈希表 """
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""" 基于数组简易实现的哈希表 """
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class ArrayHashMap:
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class ArrayHashMap:
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def __init__(self):
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def __init__(self):
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@ -18,13 +17,13 @@ class ArrayHashMap:
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self.bucket = [None] * 100
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self.bucket = [None] * 100
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""" 哈希函数 """
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""" 哈希函数 """
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def hashFunc(self, key):
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def hash_func(self, key):
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index = key % 100
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index = key % 100
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return index
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return index
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""" 查询操作 """
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""" 查询操作 """
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def get(self, key):
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def get(self, key):
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index = self.hashFunc(key)
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index = self.hash_func(key)
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pair = self.bucket[index]
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pair = self.bucket[index]
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if pair is None:
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if pair is None:
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return None
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return None
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@ -33,17 +32,17 @@ class ArrayHashMap:
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""" 添加操作 """
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""" 添加操作 """
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def put(self, key, val):
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def put(self, key, val):
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pair = Entry(key, val)
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pair = Entry(key, val)
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index = self.hashFunc(key)
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index = self.hash_func(key)
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self.bucket[index] = pair
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self.bucket[index] = pair
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""" 删除操作 """
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""" 删除操作 """
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def remove(self, key):
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def remove(self, key):
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index = self.hashFunc(key)
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index = self.hash_func(key)
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# 置为None,代表删除
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# 置为 None ,代表删除
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self.bucket[index] = None
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self.bucket[index] = None
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""" 获取所有键值对 """
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""" 获取所有键值对 """
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def entrySet(self):
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def entry_set(self):
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result = []
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result = []
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for pair in self.bucket:
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for pair in self.bucket:
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if pair is not None:
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if pair is not None:
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@ -51,7 +50,7 @@ class ArrayHashMap:
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return result
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return result
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""" 获取所有键 """
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""" 获取所有键 """
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def keySet(self):
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def key_set(self):
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result = []
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result = []
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for pair in self.bucket:
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for pair in self.bucket:
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if pair is not None:
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if pair is not None:
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@ -59,7 +58,7 @@ class ArrayHashMap:
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return result
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return result
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""" 获取所有值 """
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""" 获取所有值 """
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def valueSet(self):
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def value_set(self):
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result = []
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result = []
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for pair in self.bucket:
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for pair in self.bucket:
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if pair is not None:
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if pair is not None:
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@ -101,13 +100,13 @@ if __name__ == "__main__":
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""" 遍历哈希表 """
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""" 遍历哈希表 """
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print("\n遍历键值对 Key->Value")
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print("\n遍历键值对 Key->Value")
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for pair in mapp.entrySet():
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for pair in mapp.entry_set():
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print(pair.key, "->", pair.val)
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print(pair.key, "->", pair.val)
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print("\n单独遍历键 Key")
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print("\n单独遍历键 Key")
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for key in mapp.keySet():
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for key in mapp.key_set():
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print(key)
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print(key)
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print("\n单独遍历值 Value")
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print("\n单独遍历值 Value")
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for val in mapp.valueSet():
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for val in mapp.value_set():
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print(val)
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print(val)
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@ -35,20 +35,20 @@ class Trunk:
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self.prev = prev
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self.prev = prev
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self.str = str
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self.str = str
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def showTrunks(p):
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def show_trunks(p):
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if p is None:
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if p is None:
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return
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return
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showTrunks(p.prev)
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show_trunks(p.prev)
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print(p.str, end='')
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print(p.str, end='')
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def print_tree(root, prev=None, isLeft=False):
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def print_tree(root, prev=None, is_left=False):
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"""Print a binary tree
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"""Print a binary tree
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This tree printer is borrowed from TECHIE DELIGHT
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This tree printer is borrowed from TECHIE DELIGHT
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https://www.techiedelight.com/c-program-print-binary-tree/
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https://www.techiedelight.com/c-program-print-binary-tree/
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Args:
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Args:
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root ([type]): [description]
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root ([type]): [description]
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prev ([type], optional): [description]. Defaults to None.
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prev ([type], optional): [description]. Defaults to None.
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isLeft (bool, optional): [description]. Defaults to False.
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is_left (bool, optional): [description]. Defaults to False.
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"""
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"""
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if root is None:
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if root is None:
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return
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return
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if prev is None:
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if prev is None:
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trunk.str = '———'
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trunk.str = '———'
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elif isLeft:
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elif is_left:
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trunk.str = '/———'
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trunk.str = '/———'
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prev_str = ' |'
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prev_str = ' |'
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else:
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else:
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trunk.str = '\———'
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trunk.str = '\———'
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prev.str = prev_str
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prev.str = prev_str
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showTrunks(trunk)
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show_trunks(trunk)
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print(' ' + str(root.val))
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print(' ' + str(root.val))
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if prev:
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if prev:
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prev.str = prev_str
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prev.str = prev_str
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@ -144,7 +144,7 @@ elementAddr = firtstElementAddr + elementLength * elementIndex
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```python title="array.py"
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```python title="array.py"
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""" 随机访问元素 """
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""" 随机访问元素 """
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def randomAccess(nums):
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def random_access(nums):
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# 在区间 [0, len(nums)-1] 中随机抽取一个数字
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# 在区间 [0, len(nums)-1] 中随机抽取一个数字
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random_index = random.randint(0, len(nums) - 1)
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random_index = random.randint(0, len(nums) - 1)
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# 获取并返回随机元素
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# 获取并返回随机元素
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@ -855,10 +855,10 @@ $$
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```python title="space_complexity.py"
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```python title="space_complexity.py"
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""" 线性阶(递归实现) """
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""" 线性阶(递归实现) """
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def linearRecur(n):
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def linear_recur(n):
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print("递归 n =", n)
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print("递归 n =", n)
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if n == 1: return
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if n == 1: return
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linearRecur(n - 1)
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linear_recur(n - 1)
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```
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```
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=== "Go"
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=== "Go"
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@ -514,7 +514,7 @@ $$
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/* 删除操作 */
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/* 删除操作 */
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void remove(int key) {
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void remove(int key) {
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int index = hashFunc(key);
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int index = hashFunc(key);
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// 置为空字符,代表删除
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// 置为 nullptr ,代表删除
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bucket[index] = nullptr;
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bucket[index] = nullptr;
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}
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}
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};
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};
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@ -528,36 +528,36 @@ $$
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def __init__(self, key, val):
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def __init__(self, key, val):
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self.key = key
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self.key = key
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self.val = val
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self.val = val
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""" 基于数组简易实现的哈希表 """
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""" 基于数组简易实现的哈希表 """
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class ArrayHashMap:
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class ArrayHashMap:
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def __init__(self):
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def __init__(self):
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# 初始化一个长度为 100 的桶(数组)
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# 初始化一个长度为 100 的桶(数组)
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self.bucket = [None] * 100
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self.bucket = [None] * 100
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""" 哈希函数 """
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""" 哈希函数 """
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def hashFunc(self, key):
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def hash_func(self, key):
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index = key % 100
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index = key % 100
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return index
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return index
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""" 查询操作 """
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""" 查询操作 """
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def get(self, key):
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def get(self, key):
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index = self.hashFunc(key)
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index = self.hash_func(key)
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pair = self.bucket[index]
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pair = self.bucket[index]
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if pair is None:
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if pair is None:
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return None
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return None
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return pair.val
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return pair.val
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""" 添加操作 """
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""" 添加操作 """
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def put(self, key, val):
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def put(self, key, val):
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pair = Entry(key, val)
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pair = Entry(key, val)
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index = self.hashFunc(key)
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index = self.hash_func(key)
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self.bucket[index] = pair
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self.bucket[index] = pair
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""" 删除操作 """
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""" 删除操作 """
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def remove(self, key):
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def remove(self, key):
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index = self.hashFunc(key)
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index = self.hash_func(key)
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# 置为空字符,代表删除
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# 置为 None ,代表删除
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self.bucket[index] = None
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self.bucket[index] = None
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```
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```
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@ -708,39 +708,6 @@ $$
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// 置为 null ,代表删除
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// 置为 null ,代表删除
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this.bucket[index] = null;
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this.bucket[index] = null;
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}
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}
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/* 获取所有键值对 */
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public entries(): (Entry | null)[] {
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let arr: (Entry | null)[] = [];
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for (let i = 0; i < this.bucket.length; i++) {
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if (this.bucket[i]) {
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arr.push(this.bucket[i]);
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}
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}
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return arr;
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}
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/* 获取所有键 */
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public keys(): (number | undefined)[] {
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let arr: (number | undefined)[] = [];
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for (let i = 0; i < this.bucket.length; i++) {
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if (this.bucket[i]) {
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arr.push(this.bucket[i]?.key);
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}
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}
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return arr;
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}
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/* 获取所有值 */
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public values(): (string | undefined)[] {
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let arr: (string | undefined)[] = [];
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for (let i = 0; i < this.bucket.length; i++) {
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if (this.bucket[i]) {
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arr.push(this.bucket[i]?.val);
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}
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}
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return arr;
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}
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}
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}
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```
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```
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