Shuffling a deck of cards












0












$begingroup$


I've written a function to sort an array that'd simulate shuffling a deck of cards in the way of if you had [1,2,3,4,5] on one side and [6,7,8,9,0] on the other and it becomes [1, 6, 2, 7, 3, 8, 4, 9, 5, 0].



The code works, but I'm wondering how it can be cleaned up and be more performant without the need for three additional arrays and to see if it can be done on the cards array itself.






let cards = [1,2,3,4,5,6,7,8,9,0];

const shuffle = cards => {
const shuffled = ;
const l = cards.slice(0, cards.length / 2);
const r = cards.slice(cards.length / 2, cards.length);
if (l.length === r.length) {
for (let i = 0; i < l.length; i++) {
shuffled.push(l[i], r[i]);
}
}
return shuffled;
}

shuffle(a);












share|improve this question











$endgroup$

















    0












    $begingroup$


    I've written a function to sort an array that'd simulate shuffling a deck of cards in the way of if you had [1,2,3,4,5] on one side and [6,7,8,9,0] on the other and it becomes [1, 6, 2, 7, 3, 8, 4, 9, 5, 0].



    The code works, but I'm wondering how it can be cleaned up and be more performant without the need for three additional arrays and to see if it can be done on the cards array itself.






    let cards = [1,2,3,4,5,6,7,8,9,0];

    const shuffle = cards => {
    const shuffled = ;
    const l = cards.slice(0, cards.length / 2);
    const r = cards.slice(cards.length / 2, cards.length);
    if (l.length === r.length) {
    for (let i = 0; i < l.length; i++) {
    shuffled.push(l[i], r[i]);
    }
    }
    return shuffled;
    }

    shuffle(a);












    share|improve this question











    $endgroup$















      0












      0








      0





      $begingroup$


      I've written a function to sort an array that'd simulate shuffling a deck of cards in the way of if you had [1,2,3,4,5] on one side and [6,7,8,9,0] on the other and it becomes [1, 6, 2, 7, 3, 8, 4, 9, 5, 0].



      The code works, but I'm wondering how it can be cleaned up and be more performant without the need for three additional arrays and to see if it can be done on the cards array itself.






      let cards = [1,2,3,4,5,6,7,8,9,0];

      const shuffle = cards => {
      const shuffled = ;
      const l = cards.slice(0, cards.length / 2);
      const r = cards.slice(cards.length / 2, cards.length);
      if (l.length === r.length) {
      for (let i = 0; i < l.length; i++) {
      shuffled.push(l[i], r[i]);
      }
      }
      return shuffled;
      }

      shuffle(a);












      share|improve this question











      $endgroup$




      I've written a function to sort an array that'd simulate shuffling a deck of cards in the way of if you had [1,2,3,4,5] on one side and [6,7,8,9,0] on the other and it becomes [1, 6, 2, 7, 3, 8, 4, 9, 5, 0].



      The code works, but I'm wondering how it can be cleaned up and be more performant without the need for three additional arrays and to see if it can be done on the cards array itself.






      let cards = [1,2,3,4,5,6,7,8,9,0];

      const shuffle = cards => {
      const shuffled = ;
      const l = cards.slice(0, cards.length / 2);
      const r = cards.slice(cards.length / 2, cards.length);
      if (l.length === r.length) {
      for (let i = 0; i < l.length; i++) {
      shuffled.push(l[i], r[i]);
      }
      }
      return shuffled;
      }

      shuffle(a);








      let cards = [1,2,3,4,5,6,7,8,9,0];

      const shuffle = cards => {
      const shuffled = ;
      const l = cards.slice(0, cards.length / 2);
      const r = cards.slice(cards.length / 2, cards.length);
      if (l.length === r.length) {
      for (let i = 0; i < l.length; i++) {
      shuffled.push(l[i], r[i]);
      }
      }
      return shuffled;
      }

      shuffle(a);





      let cards = [1,2,3,4,5,6,7,8,9,0];

      const shuffle = cards => {
      const shuffled = ;
      const l = cards.slice(0, cards.length / 2);
      const r = cards.slice(cards.length / 2, cards.length);
      if (l.length === r.length) {
      for (let i = 0; i < l.length; i++) {
      shuffled.push(l[i], r[i]);
      }
      }
      return shuffled;
      }

      shuffle(a);






      javascript shuffle






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 16 mins ago









      Jamal

      30.3k11117227




      30.3k11117227










      asked 48 mins ago









      totalnoobtotalnoob

      1435




      1435






















          0






          active

          oldest

          votes











          Your Answer





          StackExchange.ifUsing("editor", function () {
          return StackExchange.using("mathjaxEditing", function () {
          StackExchange.MarkdownEditor.creationCallbacks.add(function (editor, postfix) {
          StackExchange.mathjaxEditing.prepareWmdForMathJax(editor, postfix, [["\$", "\$"]]);
          });
          });
          }, "mathjax-editing");

          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "196"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: false,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: null,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fcodereview.stackexchange.com%2fquestions%2f212504%2fshuffling-a-deck-of-cards%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Code Review Stack Exchange!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          Use MathJax to format equations. MathJax reference.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fcodereview.stackexchange.com%2fquestions%2f212504%2fshuffling-a-deck-of-cards%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          Список кардиналов, возведённых папой римским Каликстом III

          Deduzione

          Mysql.sock missing - “Can't connect to local MySQL server through socket”