Problem:
Score : 200 points

Problem Statement

You are given an integer sequence A of length N.
Find the maximum absolute difference of two elements (with different indices) in A.

Constraints

2 \leq N \leq 100

1 \leq A_i \leq 10^9

All values in input are integers.

Input

Input is given from Standard Input in the following format:

N
A_1 A_2 ... A_N

Output

Print the maximum absolute difference of two elements (with different indices) in A.

Sample Input 1

4
1 4 6 3

Sample Output 1

5

The maximum absolute difference of two elements is A_3-A_1=6-1=5.

Sample Input 2

2
1000000000 1

Sample Output 2

999999999

Sample Input 3

5
1 1 1 1 1

Sample Output 3

0

Solution in C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
class p
{
  static void Main()
  {
    int N = int.Parse(Console.ReadLine());
    string[] input = Console.ReadLine().Split(' ');
    int[] arr = new int[N];
    for (int i = 0; i < N; i++) {
      arr[i] = int.Parse(input[i]);
    }
    Array.Sort(arr);
    Console.WriteLine(Math.Abs(arr[N-1] - arr[0]));
  }
}