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  1. #1
    BillyB is offline Member
    Join Date
    Nov 2010
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    Default Boolean value not resetting

    I am working on a recursive call that checks to see if numbers are divisible by 10 and return false if not. I can't figure out why if(g != 0) ans = false; doesn't change the value of ans in the method and pass back false to the main method. Thank you for your help.

    Java Code:
    public class MultiplesOfTen {
    	public static boolean dividedBy10 (int x[], int r, int y, boolean ans){
     		int g = (x[r]%10);
     		if(g != 0)
     			ans = false;
     		else if ( r < y){
     			dividedBy10(x, r, y, ans);
     		return ans;
    	public static void main(String[] args) {
    		int [] nums = {30,55,80,70,100};
    		int r = 0; //set for the index value
    		int len = nums.length -1;
    		boolean ans = true;
    		System.out.print("Are all the numbers dividable by 10?");
    		System.out.println("The answer is: " + dividedBy10(nums, r, len, ans));

  2. #2
    JosAH's Avatar
    JosAH is offline Moderator
    Join Date
    Sep 2008
    Voorschoten, the Netherlands
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    Two remarks:

    1) a parameter doesn't exist outside the method call;
    2) you're ignoring the method return value in the else-clause.

    kind regards,

    Build a wall around Donald Trump; I'll pay for it.

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