Dot and Cross Answer

The script is designed to perform matrix operations, specifically the dot product and cross product, on two numpy arrays. The user inputs the size of the square matrices and the elements of the two matrices, and the script calculates and prints the dot product of the two matrices.

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Here is the Dot and Cross Answer HackerRank solution using CodeRankGPT:

The script uses the numpy library's dot function to calculate the dot product of two matrices. The matrices are created from user input, with the size and elements of the matrices being inputted by the user. The script first takes an integer input to determine the size of the square matrices. It then takes n lines of input for each matrix, with each line containing n space-separated integers. These inputs are converted into numpy arrays using the numpy.array function, and the dot product of the two arrays is calculated using the numpy.dot function.


import numpy

n = int(input())
ar1 = []
ar2 = []
for _ in range(n):
    tmp = list(map(int, input().split()))
    ar1.append(tmp)
np_ar1 = numpy.array(ar1)
for _ in range(n):
    tmp = list(map(int, input().split()))
    ar2.append(tmp)
np_ar2 = numpy.array(ar2)
print(numpy.dot(np_ar1, np_ar2))

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