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Thread: String reverse

  1. #1
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    Default String reverse

    Hi am trying to reverse a string

    Here is my code:
    import java.util.*;
     
    public class ReverseLettersInString {
    	public static void main (String[] args){
    		Scanner in = new Scanner (System.in);
    		String s;
    		System.out.printf ("Enter string\n");
    		s = in.nextLine();
     
    		for (int i= s.length()-1; i>0; i--)
    		{
    			System.out.printf ("%c", s.charAt(i));
    		}
    	}
     
    }

    PROGRAM OUTPUT:
    Enter string
    me
    e


    The program returns e instead of em


  2. #2
    Administrator copeg's Avatar
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    Default Re: String reverse

    Look at the loop closely. Considering the input of the String 'me' - the length of 'me' is 2, the index of 'm' is 0, and 'e' is 1...will the loop ever reach 'm'?

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  4. #3
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    Default Re: String reverse

    Thanks a lot, I changed i>0 to i>=0 and it worked!

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