hello-algo/codes/cpp/chapter_hashing/built_in_hash.cpp
Yudong Jin a005c6ebd3
Some improvements (#1073)
* Update avatar's link in the landing page

* Bug fixes

* Move assets folder from overrides to docs

* Reduce figures' corner radius

* Update copyright

* Update header image

* Krahets -> krahets

* Update the landing page
2024-02-07 22:21:18 +08:00

29 lines
868 B
C++

/**
* File: built_in_hash.cpp
* Created Time: 2023-06-21
* Author: krahets (krahets@163.com)
*/
#include "../utils/common.hpp"
/* Driver Code */
int main() {
int num = 3;
size_t hashNum = hash<int>()(num);
cout << "整数 " << num << " 的哈希值为 " << hashNum << "\n";
bool bol = true;
size_t hashBol = hash<bool>()(bol);
cout << "布尔量 " << bol << " 的哈希值为 " << hashBol << "\n";
double dec = 3.14159;
size_t hashDec = hash<double>()(dec);
cout << "小数 " << dec << " 的哈希值为 " << hashDec << "\n";
string str = "Hello 算法";
size_t hashStr = hash<string>()(str);
cout << "字符串 " << str << " 的哈希值为 " << hashStr << "\n";
// 在 C++ 中,内置 std:hash() 仅提供基本数据类型的哈希值计算
// 数组、对象的哈希值计算需要自行实现
}