evenBeforeOdd

Category: Arrays
Author: Marty Stepp
Book Chapter: 7.4
Problem: evenBeforeOdd
Write a static method named evenBeforeOdd that accepts an array of integers as a parameter and rearranges its
elements so that all even values appear before all odds. For example, if the following array is passed to your method:
int[] numbers = {5, 2, 4, 9, 3, 6, 2, 1, 11, 1, 10, 4, 7, 3};
Then after the method has been called, one acceptable ordering of the elements would be:
{4, 2, 4, 10, 2, 6, 3, 1, 11, 1, 9, 5, 7, 3}
The exact order of the elements does not matter, so long as all even values appear before all odd values. For example,
the following would also be an acceptable ordering:
{2, 2, 4, 4, 6, 10, 1, 1, 3, 3, 5, 7, 9, 11}
Do not make any assumptions about the length of the array or the range of values it might contain. For example, the
array might contain no even elements or no odd elements. You may assume that the array is not null.
You may not use any temporary arrays to help you solve this problem. (But you may declare as many simple
variables as you like, such as ints.) You also may not use any other data structures or complex types such as
Strings, or other data structures that were not taught in CSE 142 such as the ArrayList class from Chapter 10.
You will lose points if you use Arrays.sort in your solution.
Hint: Look for elements that are at inappropriate places in the array and move them to better locations.