【PAT 乙级(Basic Level)】分A+B

import java.util.Scanner;

public class Main {
private int cuculator(int number,int repeat){
int count=0,result=0;
while(number!=0){
if(number%10==repeat){
count++;
}
number/=10;
}
if(count==0){
return 0;
}else{
for(int i=0;i<count;i++){
result=result+repeat*(int)Math.pow(10, i);
}
return result;
}
}
public static void main(String[] args) {
Scanner s = new Scanner(System.in);
int a=s.nextInt();
int da=s.nextInt();
int b=s.nextInt();
int db=s.nextInt();

int pa=0,pb=0;
Main main=new Main();
pa=main.cuculator(a,da);
pb=main.cuculator(b,db);
System.out.println(pa+pb);
}
}