# Eye and Identity in Python HackerRank Solution

Hello coders, In this post, you will learn how to solve Eye and Identity in Python HackerRank Solution. This problem is a part of the Python Hacker Rank series.

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## Eye and Identity in Python HackerRank Solution

### Problem

identity :
The identity tool returns an identity array. An identity array is a square matrix with all the main diagonal elements as 1 and the rest as 0. The default type of elements is float.

import numpy
print numpy.identity(3) #3 is for  dimension 3 X 3
#Output
[[ 1.  0.  0.]
[ 0.  1.  0.]
[ 0.  0.  1.]]

eye :
The eye tool returns a 2-D array with 1’s as the diagonal and 0’s elsewhere. The diagonal can be main, upper or lower depending on the optional parameter K. A positive K is for the upper diagonal, a negative K is for the lower, and a 0 K (default) is for the main diagonal.

import numpy
print numpy.eye(8, 7, k = 1)    # 8 X 7 Dimensional array with first upper diagonal 1.
#Output
[[ 0.  1.  0.  0.  0.  0.  0.]
[ 0.  0.  1.  0.  0.  0.  0.]
[ 0.  0.  0.  1.  0.  0.  0.]
[ 0.  0.  0.  0.  1.  0.  0.]
[ 0.  0.  0.  0.  0.  1.  0.]
[ 0.  0.  0.  0.  0.  0.  1.]
[ 0.  0.  0.  0.  0.  0.  0.]
[ 0.  0.  0.  0.  0.  0.  0.]]
print numpy.eye(8, 7, k = -2)   # 8 X 7 Dimensional array with second lower diagonal 1.

#### Task :

Your task is to print an array of size N*M with its main diagonal elements as 1’s and 0’s everywhere else.

#### Input Format :

A single line containing the space separated values of N and M.
N denotes the rows.M denotes the columns.

#### Output Format :

Print the desired N*M array.

3 3

[[ 1.  0.  0.]
[ 0.  1.  0.]
[ 0.  0.  1.]]

### Eye and Identity in Python HackerRank Solution

import numpy
numpy.set_printoptions(sign=' ')
print(numpy.eye(*map(int, input().split())))

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### FAQ:

#### Does HackerRank have Python?

HackerRank’s programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, JavaScript) and span multiple computer science domains.

#### Where can I practice Python coding?

• HackerRank is a great site for practice that’s also interactive.

#### Where can I find HackerRank solutions in Python?

in this post, you will get all the solutions to HackerRank Python Problems.

#### Is possible HackerRank Solution in Python?

HackerRank’s programming challenges can be solved in a variety of programming languages (including Java, C++, PHP, Python, SQL, and JavaScript) and span multiple computer science domains. When a programmer submits a solution to a programming challenge, their submission is scored on the accuracy of their output.

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