View Code of Problem 22

#include <stdio.h>
#include <iostream>
#include <string.h>
#include <string>
#include <algorithm>
#include <iomanip>
using namespace std;
int main()
{
	string s1;
	string s2;
	while (getline(cin, s1)) {
		getline(cin, s2);
		int a1[26] = {0};
		int a2[26] = {0};
		for (int i = 0; i < s1.length(); i++) {
			a1[s1[i] - 'a']++;
		}
		for (int i = 0; i < s2.length(); i++) {
			a2[s2[i] - 'a']++;
		}
		for (int i = 0; i < 26; i++) {
			if (a1[i]!=0&&a2[i]!=0) {
				int m = min(a1[i], a2[i]);
				while (m--) {
					cout <<(char) (i + 'a');
				}
			}
		}
		cout << endl;
	}
	return 0;
}