How to extract elements of a list and append?












2












$begingroup$


A beginner's question:



Is there a way to extract elements of a list and append them into ONE number?



For example, if there is a list L={13,5,8,0}, then I am looking for a way to append 13, 5, 8 and 0 to produce the result 13580.










share|improve this question









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Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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    2












    $begingroup$


    A beginner's question:



    Is there a way to extract elements of a list and append them into ONE number?



    For example, if there is a list L={13,5,8,0}, then I am looking for a way to append 13, 5, 8 and 0 to produce the result 13580.










    share|improve this question









    New contributor




    Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$















      2












      2








      2





      $begingroup$


      A beginner's question:



      Is there a way to extract elements of a list and append them into ONE number?



      For example, if there is a list L={13,5,8,0}, then I am looking for a way to append 13, 5, 8 and 0 to produce the result 13580.










      share|improve this question









      New contributor




      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      A beginner's question:



      Is there a way to extract elements of a list and append them into ONE number?



      For example, if there is a list L={13,5,8,0}, then I am looking for a way to append 13, 5, 8 and 0 to produce the result 13580.







      list-manipulation






      share|improve this question









      New contributor




      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 46 mins ago









      m0nhawk

      2,57711531




      2,57711531






      New contributor




      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 47 mins ago









      SreekzSreekz

      112




      112




      New contributor




      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Sreekz is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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          3 Answers
          3






          active

          oldest

          votes


















          2












          $begingroup$

          You can convert the list numbers to strings, then join and finally convert back to number:



          L = {13, 5, 8, 0};

          ToExpression[StringJoin[ToString /@ L]]
          (* 13580 *)





          share|improve this answer









          $endgroup$





















            2












            $begingroup$

            Or FromDigits:



            FromDigits[{13, 5, 8, 0}]

            13580





            share|improve this answer









            $endgroup$









            • 1




              $begingroup$
              (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
              $endgroup$
              – kglr
              26 mins ago










            • $begingroup$
              Thanks @kglr for showing a more general (robust) approach.
              $endgroup$
              – Rabbit
              13 mins ago



















            1












            $begingroup$

            FromDigits @ StringJoin @ IntegerString @ L



            13580




            FromDigits @ StringJoin @ IntegerString @ {13, 5, 38, 13}



            1353813







            share|improve this answer









            $endgroup$













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              3 Answers
              3






              active

              oldest

              votes








              3 Answers
              3






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              2












              $begingroup$

              You can convert the list numbers to strings, then join and finally convert back to number:



              L = {13, 5, 8, 0};

              ToExpression[StringJoin[ToString /@ L]]
              (* 13580 *)





              share|improve this answer









              $endgroup$


















                2












                $begingroup$

                You can convert the list numbers to strings, then join and finally convert back to number:



                L = {13, 5, 8, 0};

                ToExpression[StringJoin[ToString /@ L]]
                (* 13580 *)





                share|improve this answer









                $endgroup$
















                  2












                  2








                  2





                  $begingroup$

                  You can convert the list numbers to strings, then join and finally convert back to number:



                  L = {13, 5, 8, 0};

                  ToExpression[StringJoin[ToString /@ L]]
                  (* 13580 *)





                  share|improve this answer









                  $endgroup$



                  You can convert the list numbers to strings, then join and finally convert back to number:



                  L = {13, 5, 8, 0};

                  ToExpression[StringJoin[ToString /@ L]]
                  (* 13580 *)






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 40 mins ago









                  m0nhawkm0nhawk

                  2,57711531




                  2,57711531























                      2












                      $begingroup$

                      Or FromDigits:



                      FromDigits[{13, 5, 8, 0}]

                      13580





                      share|improve this answer









                      $endgroup$









                      • 1




                        $begingroup$
                        (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                        $endgroup$
                        – kglr
                        26 mins ago










                      • $begingroup$
                        Thanks @kglr for showing a more general (robust) approach.
                        $endgroup$
                        – Rabbit
                        13 mins ago
















                      2












                      $begingroup$

                      Or FromDigits:



                      FromDigits[{13, 5, 8, 0}]

                      13580





                      share|improve this answer









                      $endgroup$









                      • 1




                        $begingroup$
                        (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                        $endgroup$
                        – kglr
                        26 mins ago










                      • $begingroup$
                        Thanks @kglr for showing a more general (robust) approach.
                        $endgroup$
                        – Rabbit
                        13 mins ago














                      2












                      2








                      2





                      $begingroup$

                      Or FromDigits:



                      FromDigits[{13, 5, 8, 0}]

                      13580





                      share|improve this answer









                      $endgroup$



                      Or FromDigits:



                      FromDigits[{13, 5, 8, 0}]

                      13580






                      share|improve this answer












                      share|improve this answer



                      share|improve this answer










                      answered 32 mins ago









                      RabbitRabbit

                      327139




                      327139








                      • 1




                        $begingroup$
                        (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                        $endgroup$
                        – kglr
                        26 mins ago










                      • $begingroup$
                        Thanks @kglr for showing a more general (robust) approach.
                        $endgroup$
                        – Rabbit
                        13 mins ago














                      • 1




                        $begingroup$
                        (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                        $endgroup$
                        – kglr
                        26 mins ago










                      • $begingroup$
                        Thanks @kglr for showing a more general (robust) approach.
                        $endgroup$
                        – Rabbit
                        13 mins ago








                      1




                      1




                      $begingroup$
                      (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                      $endgroup$
                      – kglr
                      26 mins ago




                      $begingroup$
                      (+1) you will need something like FromDigits[Flatten@IntegerDigits@L] to cover cases like L={1, 13, 5, 8, 0}.
                      $endgroup$
                      – kglr
                      26 mins ago












                      $begingroup$
                      Thanks @kglr for showing a more general (robust) approach.
                      $endgroup$
                      – Rabbit
                      13 mins ago




                      $begingroup$
                      Thanks @kglr for showing a more general (robust) approach.
                      $endgroup$
                      – Rabbit
                      13 mins ago











                      1












                      $begingroup$

                      FromDigits @ StringJoin @ IntegerString @ L



                      13580




                      FromDigits @ StringJoin @ IntegerString @ {13, 5, 38, 13}



                      1353813







                      share|improve this answer









                      $endgroup$


















                        1












                        $begingroup$

                        FromDigits @ StringJoin @ IntegerString @ L



                        13580




                        FromDigits @ StringJoin @ IntegerString @ {13, 5, 38, 13}



                        1353813







                        share|improve this answer









                        $endgroup$
















                          1












                          1








                          1





                          $begingroup$

                          FromDigits @ StringJoin @ IntegerString @ L



                          13580




                          FromDigits @ StringJoin @ IntegerString @ {13, 5, 38, 13}



                          1353813







                          share|improve this answer









                          $endgroup$



                          FromDigits @ StringJoin @ IntegerString @ L



                          13580




                          FromDigits @ StringJoin @ IntegerString @ {13, 5, 38, 13}



                          1353813








                          share|improve this answer












                          share|improve this answer



                          share|improve this answer










                          answered 20 mins ago









                          kglrkglr

                          179k9199410




                          179k9199410






















                              Sreekz is a new contributor. Be nice, and check out our Code of Conduct.










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