#include<bits/stdc++.h>
using namespace std;
int a[1010],x=-1;
char n;
int main(){
    string s;
    cin>>s;
    for(int i=0;i<=s.size()-1;i++){//
        a[(int)(s[i])]++;
    }
    for(int i=0;i<=122;i++){
        if(x<a[i]){
            x=a[i];
            n=(char)(i);
        }
    }
    cout<<n;
    return 0;
}


```cpp
#include <iostream>
#include <algorithm>
using namespace std;
int a[1005],maxx=-1;
char maxn;
int main()
{
string s;
cin>>s;
int len=s.size();
for(int i=0;i<=len;i++)
{
a[(int)(s[i])];
}
for(int i=0;i<=122;i)
{
if(maxx<a[i])
{
maxx=a[i];
maxn=(char)(i);
}
}
cout<<maxn;
return 0;
}


```


题解

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