Classes: Dealing with Complex Number in Python | HackerRank Solution

Hello coders, today we are going to solve Classes: Dealing with Complex Number HackerRank Solution in Python.

Task

For this challenge, you are given two complex numbers, and you have to print the result of their addition, subtraction, multiplication, division and modulus operations.

The real and imaginary precision part should be correct up to two decimal places.

Input Format

One line of input: The real and imaginary part of a number separated by a space.

Output Format

For two complex numbers C and D, the output should be in the following sequence on separate lines:

• C + D
• C – D
• C * D
• C / D
• mod(C)
• mod(D)

For complex numbers with non-zero real (A) and complex part (B), the output should be in the following format: A+ B_i

Replace the plus symbol (+) with a minus symbol (-) when B < 0.

For complex numbers with a zero complex part i.e. real numbers, the output should be: A + 0.00i

For complex numbers where the real part is zero and the complex part (B) is non-zero, the output should be: B + 0.00i

Sample Input

2 1
5 6

Sample Output

7.00+7.00i
-3.00-5.00i
4.00+17.00i
0.26-0.11i
2.24+0.00i
7.81+0.00i

Concept

Python is a fully object-oriented language like C++, Java, etc.

Methods with a double underscore before and after their name are considered as built-in methods. They are used by interpreters and are generally used in the implementation of overloaded operators or other built-in functionality.

__add__-> Can be overloaded for + operation

__sub__ -> Can be overloaded for - operation

__mul__ -> Can be overloaded for * operation

Solution – Classes: Dealing with Complex Number in Python

import math

class Complex(object):
    def __init__(self, real, imaginary):
        self.real = real
        self.imaginary = imaginary

    def __add__(self, no):
        return Complex((self.real+no.real), self.imaginary+no.imaginary)

    def __sub__(self, no):
        return Complex((self.real-no.real), (self.imaginary-no.imaginary))

    def __mul__(self, no):
        r = (self.real*no.real)-(self.imaginary*no.imaginary)
        i = (self.real*no.imaginary+no.real*self.imaginary)
        return Complex(r, i)

    def __truediv__(self, no):
        conjugate = Complex(no.real, (-no.imaginary))
        num = self*conjugate
        denom = no*conjugate
        try:
            return Complex((num.real/denom.real), (num.imaginary/denom.real))
        except Exception as e:
            print(e)

    def mod(self):
        m = math.sqrt(self.real**2+self.imaginary**2)
        return Complex(m, 0)

    def __str__(self):
        if self.imaginary == 0:
            result = "%.2f+0.00i" % (self.real)
        elif self.real == 0:
            if self.imaginary >= 0:
                result = "0.00+%.2fi" % (self.imaginary)
            else:
                result = "0.00-%.2fi" % (abs(self.imaginary))
        elif self.imaginary > 0:
            result = "%.2f+%.2fi" % (self.real, self.imaginary)
        else:
            result = "%.2f-%.2fi" % (self.real, abs(self.imaginary))
        return result
if __name__ == '__main__':
    c = map(float, input().split())
    d = map(float, input().split())
    x = Complex(*c)
    y = Complex(*d)
    print(*map(str, [x+y, x-y, x*y, x/y, x.mod(), y.mod()]), sep='\n')

Disclaimer: The above Problem (Classes: Dealing with Complex Number) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose.