Dot and Cross in numpy Hackerrank

dot

The dot tool returns the dot product of two arrays.

import numpy

A = numpy.array([ 1, 2 ])
B = numpy.array([ 3, 4 ])

print numpy.dot(A, B)       #Output : 11

cross

The cross tool returns the cross product of two arrays.

import numpy

A = numpy.array([ 1, 2 ])
B = numpy.array([ 3, 4 ])

print numpy.cross(A, B)     #Output : -2

Task

You are given two arrays  and . Both have dimensions of X.
Your task is to compute their matrix product.

Input Format

The first line contains the integer .
The next  lines contains  space separated integers of array .
The following  lines contains  space separated integers of array .

Output Format

Print the matrix multiplication of  and .

Sample Input

2
1 2
3 4
1 2
3 4

Sample Output

[[ 7 10] 

 [15 22]]

 

Solution : 


import numpy


m =int(input())

arr1 = numpy.array([input().split() for i in range(m)],int)

arr2 = numpy.array([input().split() for i in range(m)],int)

print(numpy.dot(arr1,arr2))

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