View Code of Problem 22

#include<iostream>
#include<algorithm>
#include<string>
#include<cstring>
using namespace std;
int main(){
	string a,b;
	
	int k; 
	while(cin>>a>>b){
		k=0;
		char c[200];
		for(int i=0;i<a.length();i++)
		for(int j=0;j<b.length();j++){
			if(a[i]==b[j]){
				c[k++]=a[i];
				b[j]='*';
				break; 
		}
		}
		sort(c,c+k);
		for(int i=0;i<k;i++){
			cout<<c[i];
		} 
		cout<<endl;
	}
	return 0;
}