题解 | #删除字符串中出现次数最少的字符#

#include <climits>
#include <iostream>
#include <string>
#include <vector>
using namespace std;

int main() {
    string s;
    cin >> s;
    vector<int> count(26);
    int minVal = INT_MAX;
    for(char c: s){
        count[c - 'a']++;
    }
    string ans;
    for(int i = 0; i < 26; i++){
        if(count[i] == 0) continue;
        if(count[i] < minVal){
            minVal = count[i];
        }
    }
    for(char c: s){
        if(count[c - 'a'] == minVal) continue;
        ans += c;
    }
    cout << ans << endl;

}
// 64 位输出请用 printf("%lld")