Transpose and Flatten in HackerRank

 import numpy


m,n =map(int,input().split())

arr = numpy.array([input().split() for i in range(m)],int)
print (arr.transpose())
print(arr.flatten())

Sample input : 
2 2 -->size of array
1 2
3 4
output:
[[1 3]
 [2 4]]  -->transpose output
[1 2 3 4] --> flatten output

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