23 lines
325 B
Ruby
23 lines
325 B
Ruby
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#Knuth Shuffling Algorithm(Choose random number between i and n-i and swap)
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#Time-complexity: O(n)
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def shuffle(arr)
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len = arr.length
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for i in 0...len
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r = Random.rand(len-i)+i
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swap(arr,i,r)
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end
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return arr
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end
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def swap(arr,i,j)
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temp = arr[i]
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arr[i] = arr[j]
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arr[j] = temp
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end
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shuffle([1,2,3,4,5,6])
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