Python Coding Challenge | Subtract Two Integers

Introduction

In Python, we can easily subtract two integers using the '-' operator. However, what if we are not allowed to use this operator? In this challenge, we will explore how to find the difference of two integers without using the '+' or '-' sign.

Skills Graph

%%%%{init: {'theme':'neutral'}}%%%% flowchart RL algorithm(("`Algorithm`")) -.-> algorithm/BasicAlgorithmsGroup(["`Basic Algorithms`"]) python(("`Python`")) -.-> python/ControlFlowGroup(["`Control Flow`"]) python(("`Python`")) -.-> python/DataStructuresGroup(["`Data Structures`"]) python(("`Python`")) -.-> python/FunctionsGroup(["`Functions`"]) python(("`Python`")) -.-> python/ObjectOrientedProgrammingGroup(["`Object-Oriented Programming`"]) python(("`Python`")) -.-> python/ErrorandExceptionHandlingGroup(["`Error and Exception Handling`"]) algorithm/BasicAlgorithmsGroup -.-> algorithm/math_probability("`Math Probability`") python/ControlFlowGroup -.-> python/conditional_statements("`Conditional Statements`") python/DataStructuresGroup -.-> python/tuples("`Tuples`") python/FunctionsGroup -.-> python/function_definition("`Function Definition`") python/ObjectOrientedProgrammingGroup -.-> python/classes_objects("`Classes and Objects`") python/ObjectOrientedProgrammingGroup -.-> python/encapsulation("`Encapsulation`") python/ErrorandExceptionHandlingGroup -.-> python/raising_exceptions("`Raising Exceptions`") subgraph Lab Skills algorithm/math_probability -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/conditional_statements -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/tuples -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/function_definition -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/classes_objects -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/encapsulation -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} python/raising_exceptions -.-> lab-268853{{"`Subtracting Integers Without Arithmetic Operators`"}} end

Sub Two

Problem

Write a Python function that takes in two integers as input and returns their difference without using the '+' or '-' sign. The function should handle the following cases:

If either input is None, the function should raise a TypeError.

The function should work for both positive and negative integers.

Requirements

To solve this problem, we need to follow these requirements:

Check for None input and raise a TypeError if necessary.

We can assume that the inputs will fit into memory.

Example Usage

Here are some examples of how the function should behave:

sub_two(None, 5) -> TypeError sub_two(7, 5) -> 2 sub_two(-5, -7) -> 2 sub_two(-5, 7) -> -12 sub_two(5, -7) -> 12

Subtracting Integers Without Arithmetic Operators