CreateArrayFromFirstAndLastElementOfArray.js

// Write a JavaScript program to create an array by taking the first and last elements from a given array of integers. The length must be larger than or equal to 1.

const prompt = require("prompt-sync")();

console.log("Enter the size of the Array : ");
var size = parseInt(prompt());

var arr = [];

for (let i = 0; i < size; i++) {
  console.log(`[${i}] : `);
  var elem = parseInt(prompt());
  arr.push(elem);
}

var first = arr[0];
var last = arr[arr.length - 1];

var sortArray = [];

sortArray.push(first);
sortArray.push(last);

console.log(sortArray);