Remove repeated values in a CSV string

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Matthew Tyler Jeffries
评论： Matthew Tyler Jeffries 2019-4-22
I have a string with comma separated values, and would like to delete the repeated values so that there are no repeats in my string.
mystring = '1,1,1,25,33,33,5,5,3,2,1,1'
Iwant = '1,25,33,5,3,2'
The order of the numbers in "Iwant" is not important. It could be '1,25,33,5,3,2' or "1,33,5,25,3,2" or "2,3,5,33,1,25" (whatever works).
I have many other strings I would like to edit, so it would be great if the code could apply to a string with any manner of numbers in it.
  2 个评论
Walter Roberson
Walter Roberson 2019-4-19
Are the values certain to be numeric? Are they certain to be integer? If they might be floating point, then would 25.70 be considered different than 25.7 ?
Matthew Tyler Jeffries
Matthew Tyler Jeffries 2019-4-19
Yes, the values will always be numeric, no decimals, no fractions, no negative numbers.

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采纳的回答

Stephan
Stephan 2019-4-19
编辑：Stephan 2019-4-19
mystring = '1,1,1,25,33,33,5,5,3,2,1,1'
iwant = join(unique(split(string(mystring),',')),',')
results in a string:
mystring =
'1,1,1,25,33,33,5,5,3,2,1,1'
iwant =
"1,2,25,3,33,5"
Note, that you speak of string, but use char type. if you want char as result use this instead:
iwant = char(join(unique(split(string(mystring),',')),','))

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