Hello Programmers/Coders, Today we are going to share solutions of Programming problems of HackerRank of Programming Language Python. At Each Problem with Successful submission with all Test Cases Passed, you will get an score or marks. And after solving maximum problems, you will be getting stars. This will highlight your profile to the recruiters.
In this post, you will find the solution for Dot and Cross in Python-HackerRank Problem. We are providing the correct and tested solutions of coding problems present on HackerRank. If you are not able to solve any problem, then you can take help from our Blog/website.
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Introduction To Python
Python is a widely-used, interpreted, object-oriented, and high-level programming language with dynamic semantics, used for general-purpose programming. It was created by Guido van Rossum, and first released on February 20, 1991.
Python is a computer programming language often used to build websites and software, automate tasks, and conduct data analysis. It is also used to create various machine learning algorithm, and helps in Artificial Intelligence. Python is a general purpose language, meaning it can be used to create a variety of different programs and isn’t specialized for any specific problems. This versatility, along with its beginner-friendliness, has made it one of the most-used programming languages today. A survey conducted by industry analyst firm RedMonk found that it was the most popular programming language among developers in 2020.
Link for the Problem – Dot and Cross in Python – HackerRank Solution
Dot and Cross in Python – HackerRank Solution
Problem:
dotThe 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
CrossThe 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.
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]]
Dot and Cross in Python – HackerRank Solution
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))
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