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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.Scanner;

class Main{
  public static void main (String[] args){
  
    Scanner scanner=new Scanner(System.in);
    int n=scanner.nextInt();
    
    int max=0;
    int min=0;

    for(int i=0;i<n;i++){
      int a =scanner.nextInt();
     if(i==0){
      max=a;
      min=a;
    }
    if(a>max){
      max=a;
    }
    if(a<min){
      min=a;
    }
  }
    System.out.println(max-min);
  }
}