// File: hash_map_test.go // Created Time: 2022-12-14 // Author: msk397 (machangxinq@gmail.com) package chapter_hashing import ( "fmt" "strconv" "testing" . "github.com/krahets/hello-algo/pkg" ) func TestHashMap(t *testing.T) { /* 初始化哈希表 */ hmap := make(map[int]string) /* 添加操作 */ // 在哈希表中添加键值对 (key, value) hmap[12836] = "小哈" hmap[15937] = "小啰" hmap[16750] = "小算" hmap[13276] = "小法" hmap[10583] = "小鸭" fmt.Println("\n添加完成后,哈希表为\nKey -> Value") PrintMap(hmap) /* 查询操作 */ // 向哈希表中输入键 key ,得到值 value name := hmap[15937] fmt.Println("\n输入学号 15937 ,查询到姓名 ", name) /* 删除操作 */ // 在哈希表中删除键值对 (key, value) delete(hmap, 10583) fmt.Println("\n删除 10583 后,哈希表为\nKey -> Value") PrintMap(hmap) /* 遍历哈希表 */ // 遍历键值对 key->value fmt.Println("\n遍历键值对 Key->Value") for key, value := range hmap { fmt.Println(key, "->", value) } // 单独遍历键 key fmt.Println("\n单独遍历键 Key") for key := range hmap { fmt.Println(key) } // 单独遍历值 value fmt.Println("\n单独遍历值 Value") for _, value := range hmap { fmt.Println(value) } } func TestSimpleHash(t *testing.T) { var hash int key := "Hello 算法" hash = addHash(key) fmt.Println("加法哈希值为 " + strconv.Itoa(hash)) hash = mulHash(key) fmt.Println("乘法哈希值为 " + strconv.Itoa(hash)) hash = xorHash(key) fmt.Println("异或哈希值为 " + strconv.Itoa(hash)) hash = rotHash(key) fmt.Println("旋转哈希值为 " + strconv.Itoa(hash)) }