Create new array from total by modulo

Question

const total = 512;

Need to divide by modulo with size of an array

I want result like this,

const newArray = [100, 100, 100, 100, 100, 12];
// const newArray = [sizeofarray, sizeofarray, ...etc].

// 5 times 100 and 12

Answer 1

Using Array.from

const gen = (num, size) => {
  const rem = num % size;
  const length = Math.ceil(num / size);
  return Array.from({ length }, (_, i) =>
    (rem !== 0 && i === length - 1) ? rem : size
  );
};

console.log(gen(512, 100));
console.log(gen(500, 100));