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Solve LeetCode 3 Longest Substring Without Repeating Characters in C++ using the sliding window

Longest Substring Without Repeating Characters in C++ LeetCode 3 · sliding window · last index array Table of Contents Problem Statement Approach Algorithm C++ Program Input Sample Output Output Explanation Dry Run Flow of Execution Time Complexity Space Complexity Applications Key Points Interview Questions Frequently Asked Questions Conclusion Problem Statement 3. Longest Substring Without Repeating Characters Given a string s , find the length of the longest substring that contains no repeating characters. A substring is a continuous part of the string, so "pwke" is a subsequence of "pwwkew" but not a substring. Approach We use a sliding window . The window is the part of the string between start and end , and we always keep it free of repeated characters. An array lastIndex of size 128 remembers the most recent position of every ASCII ...

C++ Program to Demonstrate Function Overloading

C++ Program to Demonstrate Function Overloading

✅ C++ Program to Demonstrate Function Overloading Using Addition

#include <iostream>
using namespace std;

class maths
{
public:
    int add(int x, int y)
    {
        return x + y;
    }

    int add(int x, int y, int z)
    {
        return x + y + z;
    }
};

int main()
{
    int a, b, c;
    maths m;   // object of class

    cout << "Enter any two numbers:" << endl;
    cin >> a >> b;
    cout << "Sum of two numbers is: " << m.add(a, b) << endl;

    cout << "Enter any three numbers:" << endl;
    cin >> a >> b >> c;
    cout << "Sum of three numbers is: " << m.add(a, b, c) << endl;

    return 0;
}
  

๐Ÿ“˜ Explanation:

This program demonstrates function overloading in C++, which is a feature of compile-time polymorphism.

  • add(int x, int y) — adds two integers.
  • add(int x, int y, int z) — adds three integers.

Both functions have the same name but different parameter lists. The compiler decides which function to call based on the number of arguments passed.

๐Ÿงพ Sample Output:

Enter any two numbers:
10 20
Sum of two numbers is: 30
Enter any three numbers:
1 2 3
Sum of three numbers is: 6
  

๐Ÿ”‘ Keywords:

C++ function overloading, C++ add function, compile time polymorphism, C++ classes and objects, function overloading example, OOP in C++

๐Ÿ“Œ Hashtags:

#CPlusPlus #FunctionOverloading #OOP #CPPBasics #Programming #1printf

๐Ÿ” Search Description:

Learn function overloading in C++ with a simple addition program. Includes full explanation, sample output, and dark-themed code example.

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