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Thread: How to sort alphabetically?

  1. #1
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    Default How to sort alphabetically?

    If I have a list of strings within an array, say:
    [0] = jones
    [1] = apple
    [2] = struggle
    [3] = zebra

    How can I alphabetize them and place them into another array, in correct alphabetical order?


  2. #2
    Super Moderator copeg's Avatar
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    Default Re: How to sort alphabetically?

    See Arrays (Java Platform SE 6) sort methods

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    Default Re: How to sort alphabetically?

    Hey,

    You should look into the method "compareTo(String s)" for Strings. The result is negative if the first String being compared is "more" alphabetical than the parameter. Conversely, it will return positive if the first string being compared is "less" alphabetical.

    For example

     
    public class StringsCompareTo {
     
    	public static void main(String[] args){
     
    		String apple = "Apple";
    		String zebra = "Zebra";
     
    		System.out.println(apple.compareTo(zebra));     //Outputs negative number
    		System.out.println(zebra.compareTo(apple));     //Outputs positive number
     
     
    	}
     
    }

    Hope that helped!

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