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57 lines
1.3 KiB
Go
57 lines
1.3 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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"testing"
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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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mapp := 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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mapp[12836] = "小哈"
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mapp[15937] = "小啰"
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mapp[16750] = "小算"
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mapp[13276] = "小法"
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mapp[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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for key, value := range mapp {
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fmt.Printf("%d -> %s\n", key, value)
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}
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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 := mapp[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(mapp, 10583)
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fmt.Println("\n删除 10583 后，哈希表为\nKey -> Value")
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for key, value := range mapp {
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fmt.Printf("%d -> %s\n", key, value)
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}
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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 mapp {
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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 mapp {
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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 mapp {
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fmt.Println(value)
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}
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}
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