Interview Question


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Python does it in very simple way, array can be of any dimension eg 4 X 5 or even if the other dimension is varying like there is a list of 4 lists with different length. That will also do.
Rotation can be done in two ways, rightwards or leftwards. So, two statements I have given.

l = [[1,2,3],[4,5,6],[7,8,9]]

for i in range(len(l)):
    #l[i-1].append(l[i].pop(0))   #for taking first element of first array to last of last arrary 
    l[i].insert(0,l[i-1].pop())   #for bringing last element of last arrary to first element of first array

print l

- Sachin Thakare December 16, 2017 | Flag Reply


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