4.2散列：用map实现重复元素数目的计算

#include <iostream>
#include<map>
#include<string>
#include<cstdio>
using namespace std;

int main()
{
    map<string,int>str;
    int n,m;
    scanf("%d %d",&n,&m);
    string t;
    for(int i=0;i<n;++i){
        cin>>t;
        if(str.count(t)==0){
            str[t]=1;
        }else{
            str[t]+=1;
        }
    }

    for(int i=0;i<n;i++){
        cin>>t;
        cout<<t<<" "<<str.count(t)<<endl;
    }
    return 0;
}

4 3
qwe
eee
qwer
asdf

qwe
qwe 1
eee
eee 1
qqqqq
qqqqq 0

标签：map,4.2,int,qwe,qqqqq,str,eee,include,散列
来源： https://www.cnblogs.com/huzhengyu/p/14398174.html