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 JavaScript (node.js v5.12) (judge verdict: Accepted)

'use strict';
const inputRaw = require("fs").readFileSync("/dev/stdin", "utf8").trim().split("\n");
const INPUT_LIST_LENGTH_INDEX = 0;
const INPUT_LIST_INDEX = 1;
const INPUT_LIST_DELIMITER = " ";
const inputListLength = parseInt(inputRaw[INPUT_LIST_LENGTH_INDEX]);
const inputList = inputRaw[INPUT_LIST_INDEX].split(INPUT_LIST_DELIMITER);

const process = (inputList, inputListLength) => {
  let min = inputList[0];
  let max = inputList[0];

  for (let i=0;i<inputListLength; i++) {
    const current = parseInt(inputList[i]);

    if (current > max) {
      max = current;
    }
    if (current < min) {
      min = current;
    }
  }

  return max - min;
}

console.log(process(inputList, inputListLength));