Sort integer array using javascript native method.

integerSort.js

/**
 * The behavior of JavaScript sort method on integer array.
 *
 * @author Sajeeb Ahamed <sajeeb07ahamed@gmail.com>
 */
const arr = [3, 4, 2, 100, 98, 34];
arr.sort();

/**
 * Output: [100, 2, 3, 34, 4, 98]
 * weird, isn't it?
 * This is because JavaScript consider the elements as string and sort them lexicographically.
 * That is, match the first digit then second digit and so on and sort accordingly.
 */
console.log(arr); // [100, 2, 3, 34, 4, 98]

// Then how to sort what are we wanting?
arr.sort((a, b) => a - b);

console.log(arr); // Output: [2, 3, 4, 34, 98, 100]