View Code of Problem 43

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		Scanner scanner=new Scanner(System.in);
		String s=scanner.nextLine();
		StringBuilder ans=new StringBuilder();
		for(char c:s.toCharArray()) {
			if(c>='a'&&c<='z') {
				ans.append(c);
			}
			if(c>='A'&&c<='Z') {
				ans.append(c);
			}
		}
		System.out.println(ans);
	}

}