LeetCode 3237: Alt and Tab Simulation Solution

Master LeetCode problem 3237 (Alt and Tab Simulation), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

3237. Alt and Tab Simulation

Medium

Array Hash Table Simulation

Problem Explanation

Explanation:

To simulate the behavior of the Alt+Tab key combination, we can use a stack to keep track of the windows that are currently open. When a new window is opened, we push it onto the stack. When the user presses Alt+Tab, we pop the top window from the stack and bring the next window to the front. If the user switches to a different window without closing the current window, we push the current window back onto the stack.

Algorithm:

Initialize an empty stack to store the windows.
For each window opened:
- Push the window onto the stack.
When the user presses Alt+Tab:
- Pop the top window from the stack.
- If there are more windows left, push the popped window back onto the stack.
Repeat step 3 until the user selects a window.

Time Complexity:

O(N) where N is the number of windows opened.

Space Complexity:

O(N) where N is the number of windows opened.

: :

Solution Code

import java.util.Stack;

class AltAndTabSimulation {
    public String altAndTabSimulation(String[] windows) {
        Stack<String> stack = new Stack<>();

        for (String window : windows) {
            stack.push(window);
        }

        StringBuilder result = new StringBuilder();
        while (!stack.isEmpty()) {
            String currentWindow = stack.pop();
            if (!stack.isEmpty()) {
                result.insert(0, currentWindow + " -> ");
                stack.push(currentWindow);
            } else {
                result.insert(0, currentWindow);
            }
        }

        return result.toString();
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 3237 (Alt and Tab Simulation)?

This page provides optimized solutions for LeetCode problem 3237 (Alt and Tab Simulation) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.

What is the time complexity of LeetCode 3237 (Alt and Tab Simulation)?

The time complexity for LeetCode 3237 (Alt and Tab Simulation) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 3237 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 3237 in Java, C++, or Python.

Back to LeetCode Solutions