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Thread: Reverse Number

  1. #1
    Junior Member
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    Default Reverse Number


    i'm new to java programming and so i am having quite some difficulty with one particular problem. in this code i'm supposed to ask the user to enter an integer value. then using a while loop, i am supposed to display this integer value entered by the user but in reverse order. so, as an example if the user enters the number 54321 the completed program must display 12345. also, the completed program must treat both the number entered by the user, and the number it produces, as integer values. please keep in mind that so far in class we haven't learned anything beyond using conditional statements (if,else...) and loops (while, for...). also this program requires a while loop. any help would be appreciated.


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Reverse Number

    I'm guessing this is homework. What do you have so far?

  3. #3
    Java kindergarten chronoz13's Avatar
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    Default Re: Reverse Number

    how bout this as a starting for you

    1.) take the input value as a String first
    2.) reverse it using this code

    StringBuilder sb = new StringBuilder(<input value here>)
    String temp = sb.reverse().toString();

    3.) before displaying it make sure its a number first
    int parsedNumber = Integer.parseInt(temp);

    4.) then output

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