2048-generateArrayPad.js

2048-generateArrayPad.js

// Generate array with size
const generateArraySize = (size, defaultValue = 0) => Array.from({ length: size }, () => defaultValue);

// Function receive an array and the size
const arrayPad = (arr=[], size=4) => {
  return [...arr, ...generateArraySize(size - arr.length)];
};

console.log(arrayPad([2,4,8], 4));
console.log(arrayPad([2], 4));
console.log(arrayPad([2,4,8,16], 4));

// Response
//[ 2, 4, 8, 0 ]
//[ 2, 0, 0, 0 ]
//[ 2, 4, 8, 16 ]