Maximum Difference

Time Limit: 0.5 sec

**The Problem**

Given an array with ** n** elements. You have to find the maximum difference between any two elements of the array.

**The Input**

Input starts with an integer ** T (1 ≤ T ≤ 10)**, denoting the number of test cases.

Each case contains a single integer ** n (2 ≤ n ≤ 15)**, denoting the size of the array.

Next line contains ** n** space separated integers in range [

**1, 100**].

**The Output**

For each case, just print the answer (maximum difference).

**Sample Input**

2

5

1 2 7 3 5

2

5 5

**Sample Output**

6

0

**Note:**

In case 1, maximum difference is 7 – 1 = 6.

In case 2, maximum difference is 5 – 5 = 0.

Problem Setter: Sheikh Monir [Bangabandhu Sheikh Mujibur Rahman Science and Technology University]