Add Two Integers - Practice Coding Problems

Add Two Integers - Problem

Math Easy

Add Two Integers

You are given two integers num1 and num2. Your task is to return the sum of these two integers.

This fundamental problem introduces you to basic arithmetic operations in programming. While seemingly simple, understanding how to properly handle integer addition is crucial for more complex mathematical computations.

Goal: Calculate and return num1 + num2
Input: Two integers num1 and num2
Output: An integer representing their sum

Input & Output

example_1.py — Basic Addition

$ Input: num1 = 12, num2 = 5

› Output: 17

💡 Note: The sum of 12 and 5 is 17

example_2.py — Negative Numbers

$ Input: num1 = -10, num2 = 4

› Output: -6

💡 Note: Adding a positive number to a negative number: -10 + 4 = -6

example_3.py — Both Negative

$ Input: num1 = -1, num2 = -1

› Output: -2

💡 Note: Adding two negative numbers results in a more negative number: -1 + (-1) = -2

Visualization

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Understanding the Visualization

Receive Input

Get the two integers num1 and num2

Perform Addition

Use the + operator to add the numbers

Return Result

Return the calculated sum

Key Takeaway

🎯 Key Insight: The addition operator (+) is the most efficient way to add two integers, providing O(1) time complexity.

Time & Space Complexity

Time Complexity

⏱️

O(1)

Addition is a constant time operation regardless of the values

✓ Linear Growth

Space Complexity

O(1)

No additional space needed beyond storing the result

✓ Linear Space

Constraints

-1000 ≤ num1, num2 ≤ 1000
Both inputs are guaranteed to be integers
No integer overflow concerns within the given range

Asked in

G Google 15 a Amazon 12 Apple 8 ⊞ Microsoft 10

The optimal solution uses the built-in addition operator to add two integers in O(1) time and O(1) space. This fundamental operation is the building block for more complex arithmetic algorithms.

Common Approaches

Approach	Time	Space	Notes
✓ Basic Addition Operator	O(1)	O(1)	Use the built-in addition operator to sum the two integers

Basic Addition Operator — Algorithm Steps

Take the first integer num1
Take the second integer num2
Apply the addition operator: num1 + num2
Return the result

Visualization

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Step-by-Step Walkthrough

Input Numbers

We have two integers: num1 and num2

Addition Operation

The processor performs binary addition

Return Result

The sum is calculated and returned

Code -

solution.c — C

#include <stdio.h>

int addTwoIntegers(int num1, int num2) {
    return num1 + num2;
}

int main() {
    int num1, num2;
    scanf("%d %d", &num1, &num2);
    printf("%d\n", addTwoIntegers(num1, num2));
    return 0;
}

Time & Space Complexity

Time Complexity

⏱️

O(1)

Addition is a constant time operation regardless of the values

✓ Linear Growth

Space Complexity

O(1)

No additional space needed beyond storing the result

✓ Linear Space

Constraints

-1000 ≤ num1, num2 ≤ 1000
Both inputs are guaranteed to be integers
No integer overflow concerns within the given range

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Smart Actions

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Input & Output

Visualization

Time & Space Complexity

Related Problems

Constraints

Common Approaches

Basic Addition Operator — Algorithm Steps

Visualization

Code -

Time & Space Complexity

Constraints

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