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How to Remove multiple objects from a list

posh

Hi

I have a problem writing skill to eliminate repetitions of an object in a list.

For Example if i have a list list1 = '(a a b b c a c b a c d a )

i have to get an output as list1=(a b c d) for this i have trying to use for loops but all my tries are just returning nil. can anyone please help me how to do this.

Thank You

Regards

Harish

  • Hi Harish

    I think perhaps you can do something like this:

    list1='(a a b b c a c b a c d a)
    cleanList='()
    foreach(x list1
       unless( member(x cleanList)
          cleanList=cons(x cleanList)
       ) ;unless
    ) ;foreach
    printf("cleanList : %L\n" cleanList)

    I am doing it the straight-forward way. Maybe someone else has a better method. : )

    Best regards
    Quek

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