Debugging Practice

By: Turk Erdin

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• The code below is broken. I have placed the expected output in the comments. Using the debugger tool and everything you’ve learned about loops, go through and debug this faulty code so it prints as expected.

import java.util.*;

public class DebuggingPractice {
    public static void main(String[] arg) {
        Scanner sc = new Scanner(System.in);
        
        /**
           Expected output:
           
           How many layers in your pyramid do you want?
           4

           *
           * *
           * * *
           * * * *
         */
        System.out.println("How many layers in your pyramid do you want?");
        int levels = sc.nextInt();
        
        System.out.println();
        
        for (int i=0; i<=levels; i++) {
            for (int j=i-1; j>0; j++) {
                System.out.print("* ");
            }

            System.out.println();
        }

        /**
           Expected output:
           
           What is your name?
           Turk

           K R U T
         */
        System.out.println("What is your name?");
        String str = sc.nextLine().toUpperCase();
        String str2 = "";

        System.out.println();
        for (int i=str.length(); i<0; i--) {
            str2 += str.charAt(i);
        }

        System.out.println(str2);

        sc.close();
    }
}