自己写的。C语言题解 | #删除字符串中出现次数最少的字符#

#include<stdio.h>
int main() {
    int letter[26] = {0};
    char line[21];
    int i = 0, min = 21;
    scanf("%s", line);
    while (line[i] != '\0') {
        letter[line[i] - 'a']++;
        i++;
    }
    for (i = 0; i < 26; i++) {
        if (letter[i] > 0 && letter[i] < min) {
            min = letter[i];
        }
    }
    i = 0;
    while (line[i] != '\0') {
        if (letter[line[i] - 'a'] != min) {
            printf("%c", line[i]);
        }
        i++;
    }
    return 0;
}