multiplication-table.md

Multiplication table ^{6 Kyu}

^{LINK TO THE KATA - ARRAYS FUNDAMENTALS}

Description

Your task, is to create N×N multiplication table, of size provided in parameter.

For example, when given size is 3:

1 2 3
2 4 6
3 6 9

For the given example, the return value should be:

[[1,2,3],[2,4,6],[3,6,9]]

Solution

const getArrayOfNumbers = (number, multiplier) => {
  const result = []

  for (let i = 1; i <= number; i++) {
    result.push(i * multiplier)
  }

  return result
}

const multiplicationTable = size => {
  const arrayWrapper = Array(size).fill([])

  const resultArray = arrayWrapper.map((subArray, index) => {
    return getArrayOfNumbers(size, index + 1)
  })

  return resultArray
}