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Merge pull request #96 from Slone123c/patch
Hashing search and test using go
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commit
a5b473f718
3 changed files with 84 additions and 2 deletions
29
codes/go/chapter_searching/hashing_search.go
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29
codes/go/chapter_searching/hashing_search.go
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// File: binary_search.go
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// Created Time: 2022-12-12
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// Author: Slone123c (274325721@qq.com)
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package chapter_searching
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import . "github.com/krahets/hello-algo/pkg"
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/* 哈希查找(数组) */
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func hashingSearch(m map[int]int, target int) int {
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// 哈希表的 key: 目标元素,value: 索引
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// 若哈希表中无此 key ,返回 -1
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if index, ok := m[target]; ok {
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return index
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} else {
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return -1
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}
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}
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/* 哈希查找(链表) */
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func hashingSearch1(m map[int]*ListNode, target int) *ListNode {
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// 哈希表的 key: 目标结点值,value: 结点对象
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// 若哈希表中无此 key ,返回 nil
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if node, ok := m[target]; ok {
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return node
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} else {
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return nil
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}
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}
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35
codes/go/chapter_searching/hashing_search_test.go
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35
codes/go/chapter_searching/hashing_search_test.go
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// File: binary_search.go
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// Created Time: 2022-12-12
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// Author: Slone123c (274325721@qq.com)
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package chapter_searching
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import (
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"fmt"
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. "github.com/krahets/hello-algo/pkg"
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"testing"
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)
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func TestHashingSearch(t *testing.T) {
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target := 3
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/* 哈希查找(数组) */
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nums := []int{1, 5, 3, 2, 4, 7, 5, 9, 10, 8}
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// 初始化哈希表
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m := make(map[int]int)
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for i := 0; i < len(nums); i++ {
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m[nums[i]] = i
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}
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index := hashingSearch(m, target)
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fmt.Println("目标元素 3 的索引 = ", index)
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/* 哈希查找(链表) */
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head := ArrayToLinkedList(nums)
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// 初始化哈希表
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m1 := make(map[int]*ListNode)
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for head != nil {
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m1[head.Val] = head
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head = head.Next
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}
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node := hashingSearch1(m1, target)
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fmt.Println("目标结点值 3 的对应结点对象为 ", node)
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}
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@ -53,7 +53,16 @@ comments: true
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=== "Go"
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```go title="hashing_search.go"
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/* 哈希查找(数组) */
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func hashingSearch(m map[int]int, target int) int {
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// 哈希表的 key: 目标元素,value: 索引
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// 若哈希表中无此 key ,返回 -1
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if index, ok := m[target]; ok {
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return index
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} else {
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return -1
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}
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}
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```
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=== "JavaScript"
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@ -121,7 +130,16 @@ comments: true
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=== "Go"
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```go title="hashing_search.go"
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/* 哈希查找(链表) */
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func hashingSearch1(m map[int]*ListNode, target int) *ListNode {
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// 哈希表的 key: 目标结点值,value: 结点对象
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// 若哈希表中无此 key ,返回 nil
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if node, ok := m[target]; ok {
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return node
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} else {
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return nil
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}
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}
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```
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=== "JavaScript"
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