View Code of Problem 22

#include <stdio.h>
#include <string.h>
#include <math.h>
#include <ctype.h>

int main(){
	char name1[1001], name2[1001], repeat[1001];
	int k;
	while(gets(name1)) {
		gets(name2);
		k = 0;
		for(int i = 0, l1 = strlen(name1); i < l1; i ++) {
			for(int j = 0, l2 = strlen(name2); j < l2; j ++) {
				if(name1[i] == name2[j]) {
					repeat[k ++] = name1[i];
					name2[j] = '*';
					break;
				}
			}
		}
		repeat[k] = '\0';
		
		char c;
		for(int i = 0; i < k; i ++) {
			for(int j = i + 1; j < k; j ++) {
				if(repeat[i] > repeat[j]){
					c = repeat[i];
					repeat[i] = repeat[j];
					repeat[j] = c;
				}
			}
		}
		puts(repeat);
	}
	
	return 0;
}