JS Practice — Built-in Objects

Array() — create an array of zeros

📖 Usage Example

const zeros = new Array(5).fill(0)
zeros  // → [0, 0, 0, 0, 0]

Combine new Array(n) with fill() to create an array of n identical values.

Array constructor + fill()

A common pattern is to combine new Array(n) with .fill(value) to create an array of n identical values without a loop. The sparse array produced by new Array(n) is immediately filled with the provided value.

Challenge: Implement createZeros that returns an array of n zeros.

createZeros(4) // → [0, 0, 0, 0]
createZeros(0) // → []

💡 Hints (2)

• `new Array(n)` creates an empty-slot array; `.fill(0)` replaces every slot with `0`.
• This pattern avoids a for-loop and is very common in algorithm problems.