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Dear all, I would like to select a number of entries from a fix set. Say i want to select 4 numbers from the set [1 45 26 987 25 97 65 89 46]. One possible result can be [56 987 65 46]. How can I achieve that? Thanks in advance! J.Y. |
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Random number selection
Started by ●April 29, 2003
Reply by ●April 29, 20032003-04-29
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Hy JY, You can add the following lines to your program: M=[1 45 26 987 25 97 65 89 46]; for i=1:4 result(1,i)=M(1,ceil(9*rand)); %you have 9 numbers in your list end regards Rene Bartar >Dear all, > >I would like to select a number of entries from a fix set. Say i want >to select 4 numbers from the set [1 45 26 987 25 97 65 89 46]. One >possible result can be [56 987 65 46]. >How can I achieve that? > >Thanks in advance! > >J.Y. |
Reply by ●May 12, 20032003-05-12
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Hi, folks!! Sorry for the slip, so lets try to fix it. pointer=[10 10 10 10]; %thats the variable that will point the position in you matrix. flag=0; %flag==1 means "Hey! You've already picked that number!" M=[1 45 26 987 25 97 65 89 46]; for i=1:4 while flag==1 do flag=0; pointer[i]l(9*rand) for j=1:i if pointer[i]==pointer[j] flag=1 end end result(1,i)=M(pointer(i)); end I think that will do, but i didnt test it for lack of time. regards Rene Bartar >Hi, I believe the attached code could result in numbers selected twice. >for that reason, the procedure need little fine tuning to make sure that >the number has not been selected. > >RenBartar <> wrote: >Hy JY, > >You can add the following lines to your program: > >M=[1 45 26 987 25 97 65 89 46]; >for i=1:4 >result(1,i)=M(1,ceil(9*rand)); %you have 9 numbers in your list >end > >regards >Rene Bartar > > >Dear all, > > > >I would like to select a number of entries from a fix set. Say i want > >to select 4 numbers from the set [1 45 26 987 25 97 65 89 46]. One > >possible result can be [56 987 65 46]. > >How can I achieve that? > > > >Thanks in advance! > > > >J.Y. |
