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Basemm/gist:8789091

Last active August 29, 2015 13:55
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Array Shuffle
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gistfile1.coffee
arrayShuffle = (arr, numOfSwaps = arr.length / 2) ->
#copy array
newArr = arr.slice(0)
for i in [0...numOfSwaps]
rnd1 = Math.floor( Math.random() * arr.length )
rnd2 = Math.floor( Math.random() * arr.length )
#swap elements
buf = newArr[rnd1]
newArr[rnd1] = newArr[rnd2]
newArr[rnd2] = buf
return newArr
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