Java Subarray with specific size from array-CodePudding

If I have array like [1,2,3,4] and k = 3 then output should be [1,2,3][2,3,4] which is in this order. The idea is to get subarray with k elements and then the next to start from the next element and also to have k elements I can't think of a way to do it more generic for any value of k.

    final int arr[] = new int[] { 1, 2, 3, 4 };
    final int max = 2;
    for (int i = 0; i < arr.length - 1; i  ) {
        for (int j = i   1; j < arr.length; j  ) {
            for (int k = 0; k < max; k = k   2) {
                System.out.println(i   ""   j);
            }
        }
    }

CodePudding user response：

You can extract parts of an array by calling Arrays.copyOfRange() method:

int[] arr = {1, 2, 3, 4};
int k = 3;
   
int numberOfResults = arr.length - k   1;
for (int i = 0; i < numberOfResults; i  ) {
    int[] result = Arrays.copyOfRange(arr,i,i k);
    System.out.println(Arrays.toString(result));
}