题解 | #删除字符串中出现次数最少的字符#

#include <stdint.h>
#include <stdio.h>
#include <string.h>

int main() {
    char s[21] = {};
    uint8_t num[20] = {};
    uint32_t length = 0;
    uint8_t min = 0;

    scanf("%s", s);
    length = strlen(s);
    for (int i=0; i<length; ++i) {
        for (int j=0; j<length; ++j) {
            if (s[i] == s[j]) {
                num[i]++;
            } else {}
        }
    }
    min = num[0];
    for (int i=0; i<length; ++i) {
        if (num[i] < min) {
            min = num[i];
        } else {}
    }
    for (int i=0; i<length; ++i) {
        if (num[i] != min) {
            printf("%c", s[i]);
        } else {}
    }

    return 0;
}