75 lines
1.6 KiB
Go
75 lines
1.6 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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/* 初始化雜湊表 */
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hmap := make(map[int]string)
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/* 新增操作 */
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// 在雜湊表中新增鍵值對 (key, value)
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hmap[12836] = "小哈"
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hmap[15937] = "小囉"
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hmap[16750] = "小算"
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hmap[13276] = "小法"
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hmap[10583] = "小鴨"
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fmt.Println("\n新增完成後，雜湊表為\nKey -> Value")
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PrintMap(hmap)
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/* 查詢操作 */
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// 向雜湊表中輸入鍵 key ，得到值 value
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name := hmap[15937]
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fmt.Println("\n輸入學號 15937 ，查詢到姓名 ", name)
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/* 刪除操作 */
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// 在雜湊表中刪除鍵值對 (key, value)
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delete(hmap, 10583)
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fmt.Println("\n刪除 10583 後，雜湊表為\nKey -> Value")
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PrintMap(hmap)
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/* 走訪雜湊表 */
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// 走訪鍵值對 key->value
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fmt.Println("\n走訪鍵值對 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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// 單獨走訪鍵 key
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fmt.Println("\n單獨走訪鍵 Key")
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for key := range hmap {
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fmt.Println(key)
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}
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// 單獨走訪值 value
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fmt.Println("\n單獨走訪值 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 TestSimpleHash(t *testing.T) {
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var hash int
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key := "Hello 演算法"
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hash = addHash(key)
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fmt.Println("加法雜湊值為 " + strconv.Itoa(hash))
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hash = mulHash(key)
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fmt.Println("乘法雜湊值為 " + strconv.Itoa(hash))
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hash = xorHash(key)
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fmt.Println("互斥或雜湊值為 " + strconv.Itoa(hash))
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hash = rotHash(key)
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fmt.Println("旋轉雜湊值為 " + strconv.Itoa(hash))
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}
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