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AnswerRe: How to put the condition if the array may be empty? Pin
Richard MacCutchan26-Nov-22 3:04
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GeneralRe: How to put the condition if the array may be empty? Pin
Cris29M26-Nov-22 3:43
Cris29M26-Nov-22 3:43 
"
Why are you trying to access elements of an empty array? 
"

Because is in the statement description. I have some failed tests and I thought maybe because of that.


Note that input array may be empty.




I tried like this, but still it's not working.

Java
<pre>class CycleSwap {
     static void cycleSwap(int[] array) {
        int shift = 1;

        reverse(array, 0, array.length - 1);
        reverse(array, shift, array.length - 1);
    }

     static void cycleSwap(int[] array, int shift) {
         //shift = shift % array.length;
        reverse(array, 0, array.length - 1);
        reverse(array, 0, shift - 1);
        reverse(array, shift, array.length - 1);
    }

    private static void reverse(int[] nums, int i, int j) {
        while (i < j) {
            int temp = nums[i];
            nums[i] = nums[j];
            nums[j] = temp;
            i++;
            j--;
        }
    }

    public static void main(String[] args) {

        {
            int[] array = new int[]{};
            if (array.length == 0) {
                System.out.println(0);
            } else {
                CycleSwap.cycleSwap(array, 2);
                System.out.println(Arrays.toString(array));
            }
        }
     }
}



I get this result:
[ERROR]   CycleSwapTest.testCycleSwapEmptyCaseShift:44 � ArrayIndexOutOfBounds Index 0 o...


How can I fix that?
GeneralRe: How to put the condition if the array may be empty? Pin
Richard MacCutchan26-Nov-22 4:41
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GeneralRe: How to put the condition if the array may be empty? Pin
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