Linux下hash_map之类
Linux下hash_map之类
- #include <stdio.h>
- #include <string.h>
- #include <stdlib.h>
- #include <string>
- #include <iostream>
- using namespace std;
- /*#include <ext/hash_map>
- using namespace __gnu_cxx;
- struct str_hash{
- size_t operator()(const string& str) const
- {
- unsigned long __h = 0;
- for (size_t i = 0 ; i < str.size() ; i ++)
- __h = 5*__h + str[i];
- return size_t(__h);
- }
- };*/
- #include <unordered_map>
- using namespace std;
- int main()
- {
- /*hash_map<string, int, str_hash> h;
- string s1("111"), s2("222"), s3("333");
- h[s1] = 111;
- h[s2] = 222;
- h[s3] = 333;
- cout << h[s3] << h[s2] << h[s1] << endl;
- */
- unordered_map<string, int> h;
- return 0;
- }
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