Flattening a list desiring a specific format











up vote
2
down vote

favorite












Suppose I have the following list: 



l={{{1},{2}},{{3}},{{4},{5}}};


How can I flatten this such that I get: 



{{1,2},{3},{4,5}}


I tried Flatten[l, 1] but that gives: 



{{1}, {2}, {3}, {4}, {5}}





list-manipulation







share|improve this question


























    up vote
    2
    down vote

    favorite












    Suppose I have the following list: 



    l={{{1},{2}},{{3}},{{4},{5}}};


    How can I flatten this such that I get: 



    {{1,2},{3},{4,5}}


    I tried Flatten[l, 1] but that gives: 



    {{1}, {2}, {3}, {4}, {5}}





    list-manipulation







    share|improve this question
























      up vote
      2
      down vote

      favorite









      up vote
      2
      down vote

      favorite











      Suppose I have the following list: 



      l={{{1},{2}},{{3}},{{4},{5}}};


      How can I flatten this such that I get: 



      {{1,2},{3},{4,5}}


      I tried Flatten[l, 1] but that gives: 



      {{1}, {2}, {3}, {4}, {5}}





      list-manipulation







      share|improve this question













      Suppose I have the following list: 



      l={{{1},{2}},{{3}},{{4},{5}}};


      How can I flatten this such that I get: 



      {{1,2},{3},{4,5}}


      I tried Flatten[l, 1] but that gives: 



      {{1}, {2}, {3}, {4}, {5}}





      list-manipulation




      list-manipulation






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 27 at 12:52









      William

      62138




      62138






















          2 Answers
          2






          active

          oldest

          votes

















          up vote
          2
          down vote



          accepted










          Flatten[#, 1] & /@ l



          {{1, 2}, {3}, {4, 5}}







          share|improve this answer




























            up vote
            4
            down vote













            Flatten[l, {3, 1}]



            {{1, 2}, {3}, {4, 5}}




            Also



            Flatten /@ l
            
Flatten[l, {{3, 1}}]
            
Join @@@ l


            all give




            {{1, 2}, {3}, {4, 5}}







            share|improve this answer























              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.ready(function() {
              var channelOptions = {
              tags: "".split(" "),
              id: "387"
              };
              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',
              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%2fmathematica.stackexchange.com%2fquestions%2f186771%2fflattening-a-list-desiring-a-specific-format%23new-answer', 'question_page');
              }
              );

              Post as a guest















              Required, but never shown

























              2 Answers
              2






              active

              oldest

              votes








              2 Answers
              2






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes








              up vote
              2
              down vote



              accepted










              Flatten[#, 1] & /@ l



              {{1, 2}, {3}, {4, 5}}







              share|improve this answer

























                up vote
                2
                down vote



                accepted










                Flatten[#, 1] & /@ l



                {{1, 2}, {3}, {4, 5}}







                share|improve this answer























                  up vote
                  2
                  down vote



                  accepted







                  up vote
                  2
                  down vote



                  accepted






                  Flatten[#, 1] & /@ l



                  {{1, 2}, {3}, {4, 5}}







                  share|improve this answer












                  Flatten[#, 1] & /@ l



                  {{1, 2}, {3}, {4, 5}}








                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 27 at 12:54









                  J42161217

                  3,452219




                  3,452219






















                      up vote
                      4
                      down vote













                      Flatten[l, {3, 1}]



                      {{1, 2}, {3}, {4, 5}}




                      Also



                      Flatten /@ l
                      
Flatten[l, {{3, 1}}]
                      
Join @@@ l


                      all give




                      {{1, 2}, {3}, {4, 5}}







                      share|improve this answer



























                        up vote
                        4
                        down vote













                        Flatten[l, {3, 1}]



                        {{1, 2}, {3}, {4, 5}}




                        Also



                        Flatten /@ l
                        
Flatten[l, {{3, 1}}]
                        
Join @@@ l


                        all give




                        {{1, 2}, {3}, {4, 5}}







                        share|improve this answer

























                          up vote
                          4
                          down vote










                          up vote
                          4
                          down vote









                          Flatten[l, {3, 1}]



                          {{1, 2}, {3}, {4, 5}}




                          Also



                          Flatten /@ l
                          
Flatten[l, {{3, 1}}]
                          
Join @@@ l


                          all give




                          {{1, 2}, {3}, {4, 5}}







                          share|improve this answer














                          Flatten[l, {3, 1}]



                          {{1, 2}, {3}, {4, 5}}




                          Also



                          Flatten /@ l
                          
Flatten[l, {{3, 1}}]
                          
Join @@@ l


                          all give




                          {{1, 2}, {3}, {4, 5}}








                          share|improve this answer














                          share|improve this answer



                          share|improve this answer








                          edited Nov 27 at 16:10

























                          answered Nov 27 at 14:57









                          kglr

                          174k8196401




                          174k8196401






























                              draft saved

                              draft discarded




















































                              Thanks for contributing an answer to Mathematica 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.





                              Some of your past answers have not been well-received, and you're in danger of being blocked from answering.


                              Please pay close attention to the following guidance:


                              • 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.


                              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%2fmathematica.stackexchange.com%2fquestions%2f186771%2fflattening-a-list-desiring-a-specific-format%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

                              AnyDesk - Fatal Program Failure

                              Image
                              up vote 0 down vote favorite Good day all. I have a window that pops up saying Fatal Program Failure (AnyDesk). This is what I have done so far: Uninstalled AnyDesk and reinstalled it. ( The window still appeared ) I disabled AnyDesk start up in Msconfig and the window seems to have disapeared. Lastly I made sure that AnyDesk worked by remoting into it, and it worked. Today the same window appeared. How do I get rid of this window? remote-desktop share | improve this question edited 10 hours ago Tomasz Jakub Rup 552 3 13 ...
                              Read more

                              How to calibrate 16:9 built-in touch-screen to a 4:3 resolution?

                              Image
                              up vote 0 down vote favorite I need help with an issue we're facing in a project where we are moving from a Windows-based POS environment to one running on CentOS7. The problem consists of a number of factors, please find the details below: The supplier of our POS application will only deliver an application that is hard-coded to run in a 1024:768 4:3 format. The hardware we are using is a POS unit from HP that has a built-in 16:9 touch-screen. The employees using this solution is not supposed to see nor have access to anything but the POS application. Our sales organization demands that touch is an available feature when going live with the new POS environment. Going further into this, allow me to explain what we have encountered on the way trying to achieve the goal of having a touch-screen: We've simply change...
                              Read more

                              QoS: MAC-Priority for clients behind a repeater

                              Image
                              1 1 I've setup a wireless network using a Linksys-Router (DD-WRT) as an AP and a TP-Link repeater for range extension. To manage bandwith for specific users, I've setup QoS-Rules on the AP (DD-WRT) using MAC-Priority: However the AP shows only the Repeater's MAC and the MACs of users inside the AP-Range. The MAC addresses of users behind the Repeater are not listed : The purple MAC is not listed in the AP-Clientlist. Its related to a device connected via the TP-Link repeater. Q: How can I setup MAC-Priority for repeater-clients? Do I simply add the purple MAC in AP-MAC priority list although it's not listed as a client? I want to setup specific priority instead of giving one priority for all clients behind the repeater by adding the repeater's MAC in the MAC priority list in the AP as ...
                              Read more