Javascript: Matrix mirroring

JS: Arrays
Last update: 29 Apr 11:17
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arrays.js

Write and export as default a function that takes a two-dimensional array (matrix) and returns an array, where the right half of the matrix is a mirror copy of the left one, symmetrical to its vertical axis. To keep it simple, suppose that the matrix always has an even number of columns and their number is always equal to the number of rows.

Examples

getMirrorMatrix([
  [11, 12, 13, 14],
  [21, 22, 23, 24],
  [31, 32, 33, 34],
  [41, 42, 43, 44],
]);

//  [
//     [11, 12, 12, 11],
//     [21, 22, 22, 21],
//     [31, 32, 32, 31],
//     [41, 42, 42, 41],
//  ]

Tips

  • Try to complete the challenge without using built-in array methods. Except for push() method that adds elements to the array

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