27 lines
958 B
Ruby
27 lines
958 B
Ruby
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#Given an array of random numbers, Push all the zero’s of a given array to the end of the array
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#Time Complexity: O(n),Auxiliary Space: O(1)
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##Algorithm:
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#Traverse the given array from left to right andmaintain count of non-zero elements in array.
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# For every non-zero element arr[i], put the element at ‘arr[count]’ and increment ‘count’.
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# After complete traversal, all non-zero elements have already been shifted to front end and ‘count’ is set as index of first 0.
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# Now run a loop which makes all elements zero from ‘count’ till end of the array zero.
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def move_zeros(a)
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len=a.length
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count=0
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for i in 0...len
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if a[i]!=0
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a[count]=a[i]
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count+=1
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end
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end
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# Loop from count to len-1 and fill it with zeros
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while count<len
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a[count]=0
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count+=1
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end
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return a
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end
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move_zeros([1,2,0,3,0,4,0,5,0,0,6]) # => [1, 2, 3, 4, 5, 6, 0, 0, 0, 0, 0]
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