how to convert a python slicing operation into java code

Question

Hi,
I have this code line:

x and k are int.
lm is an array

lz=[f(x,lm[:j]+lm[j+1:],k) for j in range(n)]

My question is:

I want to convert the above line into Java...

I have created an lm array in Java, but I am thinking of making it an arraylist to avoid the problem of the array length.

I know that for instanse lm is [1, 4, 1, 9]. Then the output list will be:

[4, 1, 9],[1, 1, 9],[1, 4, 9],[1 ,4,1]

But I am a little bit confused about the way to implement it in Java ...
Any help is appreciated..

Thanks

Answer 1

Will that help you?

  int[] lm = new int[] {1, 4, 1, 9};
    for (int i = 0; i < lm.length; i++) {
        int[] tmp = new int[lm.length - 1];
        System.arraycopy(lm, 0, tmp, 0, i);
        System.arraycopy(lm, i + 1, tmp, i, lm.length - i - 1);

        System.out.println("tmp = " + Arrays.toString(tmp));
     }

This of course doesn't use f() as I have no way of knowing what it actually does.