Java - Rotating array

Question

So the goal is to rotate the elements in an array right a times. As an example; if a==2, then array = {0,1,2,3,4} would become

Answer 1

Add a modulo array length to your code:

// create a newArray before of the same size as array

// copy
for(int x = 0; x <= array.length-1; x++){
  newArray[(x+a) % array.length ] = array[x];
}

You should also create a new Array to copy to, so you do not overwrite values, that you'll need later on.