Dot and Cross in Python - HackerRank Solution
Dot and Cross in Python - HackerRank Solution
Problem :
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 A and B. Both have dimensions of NXN.
Your task is to compute their matrix product.
Your task is to compute their matrix product.
Input Format :
The first line contains the integer N.
The next N lines contains N space separated integers of array A.
The following N lines contains N space separated integers of array B.
Output Format :
Print the matrix multiplication of A and B.
Sample Input :
2 1 2 3 4 1 2 3 4
Sample Output :
[[ 7 10] [15 22]]
Solution :
1 2 3 4 5 6 7 8 9 10 | # Dot and Cross in Python - Hacker Rank Solution # Python 3 # Dot and Cross in Python - Hacker Rank Solution START import numpy n = int(input()) a = numpy.array([input().split() for _ in range(n)], int) b = numpy.array([input().split() for _ in range(n)], int) print(numpy.dot(a, b)) # Dot and Cross in Python - Hacker Rank Solution END |
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