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remove dupes from array

given a random string that contains a ruby-esque array, make sure that there are no duplicate elements

Start file

[11, 2, 3,5  , 1,1, 22, 4]

End file

[1, 2, 3, 4, 5, 11, 22]

View Diff

1c1
< [11, 2, 3,5  , 1,1, 22, 4]
---
> [1, 2, 3, 4, 5, 11, 22]

Solutions by @learninghang:

Created by: @mixandgo Tweet

336 active golfers, 1358 entries

Solutions by @learninghang: