Reverse an Array in One Pass 🚀 | Two Pointer Approach | Java DSA Interview Question
🚀 In this video, we solve one of the most fundamental DSA interview questions:
👉 Reverse an Array using Java
We cover both approaches:
✔️ Using extra space (basic method)
✔️ Optimal in-place solution using Two Pointers (O(1) space)
💡 What you'll learn:
How to reverse an array step by step
Two pointer technique explained clearly
Dry run for better understanding
Interview tips and edge cases
📌 Problem:
Given an array, reverse it efficiently.
Example:
Input: [1, 4, 3, 2, 6, 5]
Output: [5, 6, 2, 3, 4, 1]
⚡ Time Complexity:
O(n)
⚡ Space Complexity:
O(1) (Optimal Approach)
🎯 Perfect for:
Beginners in DSA
Java learners
Placement preparation
Coding interviews
🔥 This is a must-know problem for interviews!
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