Multiplication Tables

Multiplication TablesCodewars

Approach

1. Create an empty array of input *row size and iterate(which means it will iterate *row times)

   1. Create an empty array of the input *column size and iterate(which means it will iterate *column times)

      1. while iterate return

         (process-1 index (row index) + 1) * (process-1-1 index (column index) + 1) (the reason why +1 because index start from 0)

2. return process-1

Time complexcity = O(n^2)

Solution

JavaScript

const multiplicationTable = (row, col) => {
  return new Array(row).fill(0)
    .map((row, rowIndex) => {
      return new Array(col).fill(0)
        .map((column, columnIndex) => (rowIndex + 1) * (columnIndex + 1));
    });
};