Swap Elements of a continuous List, possible?












2












$begingroup$


I have a function 



MinVarGeneralThermal1[T, 5, d]


which yields me the following list:



{{0.00917615, 0.0136892, 0.0204219, 0.0304659, 0.0454498, 0.10115,

 0.225114, 0.335831, 0.150899, 0.0678031}}


As you can see these are not single pairs of entires of the form 



{{1},{2},{3},{4},...}


which makes it not possible for me to target single entries using a command like 



MinVarGeneralThermal1[T, 5, d][[3]]


Is it possible to write a swap command that works something like this



swap[MinVarGeneralThermal1[T, 5, d],{1,3}]


which would essentially swap the first and third entries of the list (for example) ? In the end I want to be able to swap any two entries I want.



Thanks in advance !






list-manipulation







share|improve this question









$endgroup$

















    2












    $begingroup$


    I have a function 



    MinVarGeneralThermal1[T, 5, d]


    which yields me the following list:



    {{0.00917615, 0.0136892, 0.0204219, 0.0304659, 0.0454498, 0.10115,
    
 0.225114, 0.335831, 0.150899, 0.0678031}}


    As you can see these are not single pairs of entires of the form 



    {{1},{2},{3},{4},...}


    which makes it not possible for me to target single entries using a command like 



    MinVarGeneralThermal1[T, 5, d][[3]]


    Is it possible to write a swap command that works something like this



    swap[MinVarGeneralThermal1[T, 5, d],{1,3}]


    which would essentially swap the first and third entries of the list (for example) ? In the end I want to be able to swap any two entries I want.



    Thanks in advance !






    list-manipulation







    share|improve this question









    $endgroup$















      2












      2








      2





      $begingroup$


      I have a function 



      MinVarGeneralThermal1[T, 5, d]


      which yields me the following list:



      {{0.00917615, 0.0136892, 0.0204219, 0.0304659, 0.0454498, 0.10115,
      
 0.225114, 0.335831, 0.150899, 0.0678031}}


      As you can see these are not single pairs of entires of the form 



      {{1},{2},{3},{4},...}


      which makes it not possible for me to target single entries using a command like 



      MinVarGeneralThermal1[T, 5, d][[3]]


      Is it possible to write a swap command that works something like this



      swap[MinVarGeneralThermal1[T, 5, d],{1,3}]


      which would essentially swap the first and third entries of the list (for example) ? In the end I want to be able to swap any two entries I want.



      Thanks in advance !






      list-manipulation







      share|improve this question









      $endgroup$




      I have a function 



      MinVarGeneralThermal1[T, 5, d]


      which yields me the following list:



      {{0.00917615, 0.0136892, 0.0204219, 0.0304659, 0.0454498, 0.10115,
      
 0.225114, 0.335831, 0.150899, 0.0678031}}


      As you can see these are not single pairs of entires of the form 



      {{1},{2},{3},{4},...}


      which makes it not possible for me to target single entries using a command like 



      MinVarGeneralThermal1[T, 5, d][[3]]


      Is it possible to write a swap command that works something like this



      swap[MinVarGeneralThermal1[T, 5, d],{1,3}]


      which would essentially swap the first and third entries of the list (for example) ? In the end I want to be able to swap any two entries I want.



      Thanks in advance !






      list-manipulation




      list-manipulation






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked 5 hours ago









      Benjamin JablBenjamin Jabl

      967




      967






















          2 Answers
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          3












          $begingroup$

          I am not sure that I fully get your problem. You can always access individual elements of the nested list you have, e.g. by using yourList[[1, 3]].



          However, this may work for you:



          ClearAll[swap]
          
swap[list_List, pair_?(VectorQ[#, IntegerQ] &)] := {Permute[list[[1]], Cycles[{pair}]]}


          Here is an example usage on a made-up list:



          list = {CharacterRange["a", "g"]}
          
swap[list, {2, 3}]
          

          
(* Out:
          
{{"a", "b", "c", "d", "e", "f", "g"}}
          
{{"a", "c", "b", "d", "e", "f", "g"}}
          
*)





          share|improve this answer









          $endgroup$





















            2












            $begingroup$

            sWap[a : {{__}}, pair_] :=  Module[{l = a}, l[[1, pair]] = l[[1, Reverse @ pair]]; l]
            

            
MinVarGeneralThermal1[T, 5, d]



            {{0.00917615,0.0136892,0.0204219,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}




            sWap[MinVarGeneralThermal1[T, 5, d], {1, 3}]



            {0.0204219,0.0136892,0.00917615,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}







            share|improve this answer









            $endgroup$













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              2 Answers
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              oldest

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              2 Answers
              2






              active

              oldest

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              active

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              active

              oldest

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              3












              $begingroup$

              I am not sure that I fully get your problem. You can always access individual elements of the nested list you have, e.g. by using yourList[[1, 3]].



              However, this may work for you:



              ClearAll[swap]
              
swap[list_List, pair_?(VectorQ[#, IntegerQ] &)] := {Permute[list[[1]], Cycles[{pair}]]}


              Here is an example usage on a made-up list:



              list = {CharacterRange["a", "g"]}
              
swap[list, {2, 3}]
              

              
(* Out:
              
{{"a", "b", "c", "d", "e", "f", "g"}}
              
{{"a", "c", "b", "d", "e", "f", "g"}}
              
*)





              share|improve this answer









              $endgroup$


















                3












                $begingroup$

                I am not sure that I fully get your problem. You can always access individual elements of the nested list you have, e.g. by using yourList[[1, 3]].



                However, this may work for you:



                ClearAll[swap]
                
swap[list_List, pair_?(VectorQ[#, IntegerQ] &)] := {Permute[list[[1]], Cycles[{pair}]]}


                Here is an example usage on a made-up list:



                list = {CharacterRange["a", "g"]}
                
swap[list, {2, 3}]
                

                
(* Out:
                
{{"a", "b", "c", "d", "e", "f", "g"}}
                
{{"a", "c", "b", "d", "e", "f", "g"}}
                
*)





                share|improve this answer









                $endgroup$
















                  3












                  3








                  3





                  $begingroup$

                  I am not sure that I fully get your problem. You can always access individual elements of the nested list you have, e.g. by using yourList[[1, 3]].



                  However, this may work for you:



                  ClearAll[swap]
                  
swap[list_List, pair_?(VectorQ[#, IntegerQ] &)] := {Permute[list[[1]], Cycles[{pair}]]}


                  Here is an example usage on a made-up list:



                  list = {CharacterRange["a", "g"]}
                  
swap[list, {2, 3}]
                  

                  
(* Out:
                  
{{"a", "b", "c", "d", "e", "f", "g"}}
                  
{{"a", "c", "b", "d", "e", "f", "g"}}
                  
*)





                  share|improve this answer









                  $endgroup$



                  I am not sure that I fully get your problem. You can always access individual elements of the nested list you have, e.g. by using yourList[[1, 3]].



                  However, this may work for you:



                  ClearAll[swap]
                  
swap[list_List, pair_?(VectorQ[#, IntegerQ] &)] := {Permute[list[[1]], Cycles[{pair}]]}


                  Here is an example usage on a made-up list:



                  list = {CharacterRange["a", "g"]}
                  
swap[list, {2, 3}]
                  

                  
(* Out:
                  
{{"a", "b", "c", "d", "e", "f", "g"}}
                  
{{"a", "c", "b", "d", "e", "f", "g"}}
                  
*)






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered 5 hours ago









                  MarcoBMarcoB

                  36.2k556112




                  36.2k556112























                      2












                      $begingroup$

                      sWap[a : {{__}}, pair_] :=  Module[{l = a}, l[[1, pair]] = l[[1, Reverse @ pair]]; l]
                      

                      
MinVarGeneralThermal1[T, 5, d]



                      {{0.00917615,0.0136892,0.0204219,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}




                      sWap[MinVarGeneralThermal1[T, 5, d], {1, 3}]



                      {0.0204219,0.0136892,0.00917615,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}







                      share|improve this answer









                      $endgroup$


















                        2












                        $begingroup$

                        sWap[a : {{__}}, pair_] :=  Module[{l = a}, l[[1, pair]] = l[[1, Reverse @ pair]]; l]
                        

                        
MinVarGeneralThermal1[T, 5, d]



                        {{0.00917615,0.0136892,0.0204219,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}




                        sWap[MinVarGeneralThermal1[T, 5, d], {1, 3}]



                        {0.0204219,0.0136892,0.00917615,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}







                        share|improve this answer









                        $endgroup$
















                          2












                          2








                          2





                          $begingroup$

                          sWap[a : {{__}}, pair_] :=  Module[{l = a}, l[[1, pair]] = l[[1, Reverse @ pair]]; l]
                          

                          
MinVarGeneralThermal1[T, 5, d]



                          {{0.00917615,0.0136892,0.0204219,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}




                          sWap[MinVarGeneralThermal1[T, 5, d], {1, 3}]



                          {0.0204219,0.0136892,0.00917615,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}







                          share|improve this answer









                          $endgroup$



                          sWap[a : {{__}}, pair_] :=  Module[{l = a}, l[[1, pair]] = l[[1, Reverse @ pair]]; l]
                          

                          
MinVarGeneralThermal1[T, 5, d]



                          {{0.00917615,0.0136892,0.0204219,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}




                          sWap[MinVarGeneralThermal1[T, 5, d], {1, 3}]



                          {0.0204219,0.0136892,0.00917615,0.0304659,0.0454498,0.10115,0.225114,0.335831,0.150899,0.0678031}}








                          share|improve this answer












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                          share|improve this answer










                          answered 5 hours ago









                          kglrkglr

                          184k10202420




                          184k10202420






























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