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https://github.com/krahets/hello-algo.git
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e4ba690005
* feat(go): support hash map chaining * feat(go): support hash map open address * feat(go): support simple hash * feat(go): support top k heap * feat(go): support subset sum I * feat(go): support subset sum native * feat(go): support subset sum II * fix(go): fix some problem
127 lines
3.0 KiB
Go
127 lines
3.0 KiB
Go
// File: hash_map_test.go
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// Created Time: 2022-12-14
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// Author: msk397 (machangxinq@gmail.com)
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package chapter_hashing
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import (
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"fmt"
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"strconv"
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"testing"
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. "github.com/krahets/hello-algo/pkg"
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)
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func TestHashmap(t *testing.T) {
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/* 初始化哈希表 */
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hmap := make(map[int]string)
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/* 添加操作 */
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// 在哈希表中添加键值对 (key, value)
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hmap[12836] = "小哈"
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hmap[15937] = "小啰"
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hmap[16750] = "小算"
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hmap[13276] = "小法"
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hmap[10583] = "小鸭"
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fmt.Println("\n添加完成后，哈希表为\nKey -> Value")
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PrintMap(hmap)
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/* 查询操作 */
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// 向哈希表输入键 key ，得到值 value
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name := hmap[15937]
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fmt.Println("\n输入学号 15937 ，查询到姓名 ", name)
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/* 删除操作 */
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// 在哈希表中删除键值对 (key, value)
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delete(hmap, 10583)
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fmt.Println("\n删除 10583 后，哈希表为\nKey -> Value")
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PrintMap(hmap)
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/* 遍历哈希表 */
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// 遍历键值对 key->value
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fmt.Println("\n遍历键值对 Key->Value")
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for key, value := range hmap {
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fmt.Println(key, "->", value)
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}
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// 单独遍历键 key
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fmt.Println("\n单独遍历键 Key")
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for key := range hmap {
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fmt.Println(key)
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}
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// 单独遍历值 value
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fmt.Println("\n单独遍历值 Value")
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for _, value := range hmap {
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fmt.Println(value)
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}
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}
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func TestHashMapChaining(t *testing.T) {
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/* 初始化哈希表 */
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hmap := newHashMapChaining()
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/* 添加操作 */
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// 在哈希表中添加键值对 (key, value)
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hmap.put(12836, "小哈")
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hmap.put(15937, "小啰")
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hmap.put(16750, "小算")
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hmap.put(13276, "小法")
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hmap.put(10583, "小鸭")
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fmt.Println("\n添加完成后，哈希表为\nKey -> Value")
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hmap.print()
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/* 查询操作 */
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// 向哈希表输入键 key ，得到值 value
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name := hmap.get(15937)
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fmt.Println("\n输入学号 15937 ，查询到姓名 ", name)
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/* 删除操作 */
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// 在哈希表中删除键值对 (key, value)
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hmap.remove(12836)
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fmt.Println("\n删除 12836 后，哈希表为\nKey -> Value")
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hmap.print()
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}
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func TestHashMapOpenAddressing(t *testing.T) {
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/* 初始化哈希表 */
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hmap := newHashMapOpenAddressing()
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/* 添加操作 */
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// 在哈希表中添加键值对 (key, value)
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hmap.put(12836, "小哈")
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hmap.put(15937, "小啰")
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hmap.put(16750, "小算")
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hmap.put(13276, "小法")
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hmap.put(10583, "小鸭")
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fmt.Println("\n添加完成后，哈希表为\nKey -> Value")
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hmap.print()
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/* 查询操作 */
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// 向哈希表输入键 key ，得到值 value
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name := hmap.get(13276)
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fmt.Println("\n输入学号 13276 ，查询到姓名 ", name)
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/* 删除操作 */
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// 在哈希表中删除键值对 (key, value)
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hmap.remove(16750)
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fmt.Println("\n删除 16750 后，哈希表为\nKey -> Value")
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hmap.print()
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}
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func TestSimpleHash(t *testing.T) {
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var hash int
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key := "Hello 算法"
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hash = addHash(key)
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fmt.Println("加法哈希值为 " + strconv.Itoa(hash))
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hash = mulHash(key)
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fmt.Println("乘法哈希值为 " + strconv.Itoa(hash))
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hash = xorHash(key)
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fmt.Println("异或哈希值为 " + strconv.Itoa(hash))
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hash = rotHash(key)
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fmt.Println("旋转哈希值为 " + strconv.Itoa(hash))
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}
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