Swap Elements Of An Array In Ruby
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Join For Freeclass Array
def swap!(a,b)
self[a], self[b] = self[b], self[a]
self
end
end
You can now do stuff like..
[1,2,3,4].swap!(2,3) # = [1,2,4,3] etc..
Many thanks to Sam Stephenson and technoweenie for their suggestions.
Data structure
Element
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