lib/fase-2/commonality.js
function arrayVector(size) {
  var vec = new Array(size);
  for (var i = 0; i < size; i++) vec[i] = [];
  return vec;
}
function arrayVector(size) {
  var vec = new Array(size);
  for (var i = 0; i < size; i++) vec[i] = [];
  return vec;
}
Extend the rows or the collums