What steps should I take to ensure that the array yields the correct output?

Why is my code not creating an array of [0, 1, 2] when I pass the number 3 as a parameter?

const array = [0];
const increment = (num) => {
  if (num > 0) {
    increment(num - 1);
    array.push(num);
  }
  return;
};
console.log(array);
increment(3);

Answer №1

Almost there, your code is almost functioning correctly. The only issue is that you have placed the console.log statement before calling the function.

const array = [0];
const increment = (num) => {
  if (num > 0) {
    increment(num - 1);
    array.push(num);
  }
  return;
};

increment(3);

console.log(array);

Here's a more concise solution using Array.from:

const makeArray = length => Array.from({ length }, (_, i) => i);

console.log(makeArray(3));

Answer №2

Here is a recommended code snippet to achieve the desired result:

const list = [];
const countUp = (number) => {
  if (number > 0) {
    countUp(number - 1);
    list.push(number-1);
  }
  return;
};
countUp(3);
console.log(list);

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