题解 | #ZOJ#

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

int main() {
    char arr[101];
    scanf("%s", arr);
    string str = arr;
    int len = str.size();
    int count0;
    int count1;
    int count2;
    for (int i = 0 ; i < len ; ++i) {
        if (str[i] == 'Z') {
            ++count0;
        }
        if (str[i] == 'O') {
            ++count1;
        }
        if (str[i] == 'J') {
            ++count2;
        }
    }
    while (count1 != 0 || count0 != 0 || count2 != 0 ) {
        if(count0 != 0){
        printf("%c", 'Z');
        --count0;
        }
        if(count1 != 0){
        printf("%c", 'O');
        --count1;
        }
        if(count2 != 0){
        printf("%c", 'J');
        --count2;
        }
    }
    


}