Reverse String | LeetCode 344 | C++ Explained Step by Step
🚀 LeetCode Problem 344: Reverse String | C++ Solution Explained
In this video, we solve LeetCode Problem 344 — Reverse String using C++ with a complete step-by-step explanation.
📌 Topics Covered:
✔️ Problem Explanation
✔️ Two Pointer Approach
✔️ Step-by-Step Logic
✔️ Live Coding in C++
✔️ Time Complexity
✔️ Space Complexity
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🧠 Problem Statement
Write a function that reverses a string.
The input string is given as an array of characters, and the solution must modify the string in-place.
Example:
Input: ['h','e','l','l','o']
Output: ['o','l','l','e','h']
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⚡ Approach
1️⃣ Use two pointers
2️⃣ One pointer starts from beginning
3️⃣ Another pointer starts from end
4️⃣ Swap both characters
5️⃣ Move both pointers inward
6️⃣ Continue until both pointers meet
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⏱️ Time Complexity
O(n)
We traverse the string once.
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💾 Space Complexity
O(1)
No extra space is used.
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🔗 Problem Link
https://leetcode.com/problems/reverse...
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🌐 Connect With Me
💻 GitHub:
https://github.com/Jilanmansuri
💼 LinkedIn:
/ jilan-mansuri-235b38392
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Thank you for watching ❤️
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