Code Signal - Extract Matrix Column

extractMatrixColumn.js

/*
Given a rectangular matrix and an integer column, return an array containing the elements of the columnth column of the given matrix (the leftmost column is the 0th one).

Example

For

matrix = [[1, 1, 1, 2], 
          [0, 5, 0, 4], 
          [2, 1, 3, 6]]
          
and column = 2, the output should be
extractMatrixColumn(matrix, column) = [1, 0, 3].
*/

function extractMatrixColumn(matrix, column) {
    let newArr = [];
        
   for(let i = 0; i < matrix.length; i++) {
       newArr.push(matrix[i][column]);
   }
   
    return newArr;
}