Please explain below codes

Question

1.00/5 (1 vote)

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Java

    import java.io.*;
    import java.util.Scanner;
    import java.lang.String;
public class Amma {
public static void main(String[] args) {
  
           Scanner sc = new Scanner(System.in);
           System.out.println("Enter the String : ");
           String s = sc.nextLine();
          
           for(int i=0; i< s.length();i++)
           {

               for(int j=0;j<i;j++)
               {
            	   
                   System.out.printf("%c ",s.charAt(j));
               }
               System.out.printf("%c\n",s.charAt(i));
               }         

           
       }
          
    }

What I have tried:

also i want to print this in left also how?
a
am
amm
amma

Posted 2-Aug-17 4:09am

Member 13341845

Updated 27-Sep-22 20:01pm

Patrice T

v3

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2 solutions

Solution 2

There is a tool that allow you to see what your code is doing, its name is debugger. It is also a great learning tool because it show you reality and you can see which expectation match reality.
When you don't understand what your code is doing or why it does what it does, the answer is debugger.
Use the debugger to see what your code is doing. Just set a breakpoint and see your code performing, the debugger allow you to execute lines 1 by 1 and to inspect variables as it execute.

Debugger - Wikipedia, the free encyclopedia[^]
http://docs.oracle.com/javase/7/docs/technotes/tools/windows/jdb.html[^]
https://www.jetbrains.com/idea/help/debugging-your-first-java-application.html[^]
The debugger is here to show you what your code is doing and your task is to compare with what it should do.
There is no magic in the debugger, it don't find bugs, it just help you to. When the code don't do what is expected, you are close to a bug.

Posted 2-Aug-17 5:50am

Patrice T

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OriginalGriff · Accepted Answer · 2017-08-02T04:30:00

Solution 1

All it does is read a string from the user and print it. It print the same number of lines as the user entered characters, and each line is one character longer than the one before it.

Basically, it does what you say you want it to do, assuming you enter "amma" as your input.

Posted 2-Aug-17 4:30am

OriginalGriff

Comments

Member 13341845 2-Aug-17 10:54am

how to run the loop please explain clearly

Member 13341845 2-Aug-17 10:57am

explain it clearly

OriginalGriff 2-Aug-17 11:03am

What part of the explanation do you not understand? You wrote the code, after all...