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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 – Concatenate in Python – HackerRank Solution
Concatenate in Python – HackerRank Solution
Problem:
Two or more arrays can be concatenated together using the concatenate function with a tuple of the arrays to be joined:
import numpy array_1 = numpy.array([1,2,3]) array_2 = numpy.array([4,5,6]) array_3 = numpy.array([7,8,9]) print numpy.concatenate((array_1, array_2, array_3)) #Output [1 2 3 4 5 6 7 8 9]
if an array has more than one dimension, it is possible to specify the axis along which multiple arrays are concatenated. By default, it is along the first dimension.
import numpy array_1 = numpy.array([[1,2,3],[0,0,0]]) array_2 = numpy.array([[0,0,0],[7,8,9]]) print numpy.concatenate((array_1, array_2), axis = 1) #Output [[1 2 3 0 0 0] [0 0 0 7 8 9]]
Task :
You are given two integer arrays of size NXP and MXP ( N & M are rows, and P is the column). Your task is to concatenate the arrays along axis 0.
Input Format :
The first line contains space separated integers N, M and P.
The next N lines contains the space separated elements of the P columns.After that, the next M lines contains the space separated elements of the P columns.
Output Format :
Print the concatenated array of size (N+M)XP.
Sample Input :
4 3 2 1 2 1 2 1 2 1 2 3 4 3 4 3 4
Sample Output :
[[1 2] [1 2] [1 2] [1 2] [3 4] [3 4] [3 4]]
Concatenate in Python – HackerRank Solution
import numpy P, N, M = map(int,input().split()) A = numpy.array([input().split() for _ in range(P)],int) B = numpy.array([input().split() for _ in range(N)],int) print(numpy.concatenate((A, B), axis = 0))
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