Question2-sumEvenOdd.txt

Question 2
Write a function that takes an array of integers as an argument and returns a
value based on the sums of the even and odd numbers in the array. Let X = the sum of the odd
numbers in the array and let Y = the sum of the even numbers. The function should return X - Y
The signature of the function is:
int f(int[] a)
Examples:
 -----------------------|-----------------------------------------------------------------------
| if input array is     | return                                                                |
|-----------------------|-----------------------------------------------------------------------|
| {1}                   | 1                                                                     |
|-----------------------|-----------------------------------------------------------------------|
| {1,2}                 | -1                                                                    |
|-----------------------|-----------------------------------------------------------------------|
| {1,2,3}               | 2                                                                     |
|-----------------------|-----------------------------------------------------------------------|
| {1,2,3,4}             | -2                                                                    |
|-----------------------|-----------------------------------------------------------------------|
| {3,3,4,4}             | -2                                                                    |
|-----------------------|-----------------------------------------------------------------------|
| {}                    | 0                                                                     |
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