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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 ...
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C++ Program for Multi-Level Inheritance (Grandparent → Parent → Child)

C++ Program for Multi-Level Inheritance (Grandparent → Parent → Child)

✅ C++ Program to Demonstrate Multi-Level Inheritance

#include <iostream>
using namespace std;

class grandparent {
  public:
    void display1() {
        cout << "Hello I am your grandparent:\n";
    }
};

class parent : public grandparent {
  public:
    void display2() {
        cout << "Hello I am parent:\n";
    }
};

class child : public parent {
  public:
    void display3() {
        cout << "Hello I am child:\n";
    }
};

int main() {
    child obj;
    obj.display1();
    obj.display2();
    obj.display3();
}

📘 Explanation:

This program demonstrates the concept of multi-level inheritance in C++. - The grandparent class defines display1(). - The parent class inherits from grandparent and adds display2(). - The child class inherits from parent and adds display3(). - Thus, an object of the child class can access functions from all three classes.

🧾 Sample Output:

Hello I am your grandparent:
Hello I am parent:
Hello I am child:

🔑 Keywords:

C++ multi-level inheritance example, grandparent parent child program, inheritance in C++, OOP in C++, C++ object oriented programming

📌 Hashtags:

#CPlusPlus #Inheritance #MultiLevelInheritance #OOP #CppExamples #CodingForBeginners

🔍 Search Description:

This C++ program demonstrates multi-level inheritance where a child class inherits from a parent, which in turn inherits from a grandparent class. Includes example code, explanation, and sample output.

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