Remove Element | LeetCode 27 | C++ Explained Step by Step

🚀 LeetCode Problem 27: Remove Element | C++ Solution Explained

In this video, we solve LeetCode Problem 27 — Remove Element using C++ with a complete step-by-step explanation.

📌 Topics Covered:
✔️ Problem Explanation
✔️ Two Pointer Approach
✔️ In-Place Array Modification
✔️ Step-by-Step Dry Run
✔️ Live Coding in C++
✔️ Time Complexity
✔️ Space Complexity

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🧠 Problem Statement

Given an integer array nums and an integer val, remove all occurrences of val in-place and return the number of remaining elements.

Example:
Input:
nums = [3,2,2,3]
val = 3

Output:
2

nums = [2,2]

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⚡ Approach

1️⃣ Traverse the array

2️⃣ Check valid elements

3️⃣ Overwrite valid values

4️⃣ Move pointer forward

5️⃣ Return count of remaining elements

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⏱️ Time Complexity

O(n)

We traverse the array once.

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💾 Space Complexity

O(1)

No extra space is used.

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🔗 Problem Link

https://leetcode.com/problems/remove-element/

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🌐 Connect With Me

💻 GitHub:
https://github.com/Jilanmansuri

💼 LinkedIn:
https://linkedin.com/in/jilan-mansuri-235b38392/

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Thank you for watching ❤️

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#leetcode27
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#cpp
#cplusplus
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Видео Remove Element | LeetCode 27 | C++ Explained Step by Step канала CodeByJilan