Submission

Score: 100

User: Peam

Problemset: สตริงซ้ำซ้ำ

Language: c

Time: 0.001 second

Submitted On: 2025-10-03 22:05:41

#include <stdio.h>

int main(){
    char str1[21], str2[21];
    scanf("%s%s", str1, str2);

    int arr[123] = {0};
    for(int i = 0; str1[i] != '\0'; i++){
        for(int j = 0; str2[j] != '\0'; j++){
            if(str1[i] == str2[j]){
                arr[str1[i]] = 1;
            }
        }
    }
    for(int i = 'A'; i <= 'z'; i++){
        if(arr[i] == 1){
            printf("%c ", i);
        }
    }

    return 0;
}