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JavaScript Build a Two-Dimensional Array

Posted by Yuting Le
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Yuting Le
Full Stack JavaScript Techdegree Graduate 20,125 Points

Does these two codes work the same in here?

The code in teacher's notes:

for (let i=0; i<suites.length; i++) {
   for (let j=0; j<ranks.length; j++) {
     let card = [];
     card.push(ranks[j], suites[i]);
     deck.push(card);
   }
  }

My code:

for (let i = 0; i < suites.length; i ++){
    for (let j = 0; j < ranks.length; j ++){
      let card = [suites[i], ranks[j]];
      deck.push(card);
    }
  }

1 Answer

Steven Parker
Steven Parker
229,657 Points
Steven Parker
Steven Parker
229,657 Points

It looks like you have the item order reversed, but otherwise this would be an improvement on the example by saving a step!

But you can save yet another step and also eliminate the "card" variable completely:

      deck.push([ranks[j], suites[i]]);