Reverse an Array Efficiently Using Two Pointers | Java DSA
In this video, we will learn how to Reverse an Array using the Two Pointer Technique in Java.
This is one of the most important beginner-friendly DSA problems frequently asked in coding interviews and LeetCode problems.
📌 Topics Covered:
✔️ What is Two Pointer Approach?
✔️ Step-by-step dry run
✔️ Java implementation
✔️ Time Complexity & Space Complexity
✔️ Interview explanation tips
💻 Code Explanation:
We use two pointers:
👉 One starts from the beginning
👉 One starts from the end
We swap elements and move both pointers toward the center until they meet.
⏱️ Complexity:
✅ Time Complexity: O(n)
✅ Space Complexity: O(1)
🔥 Perfect for:
Beginners in DSA
Java developers
Coding interview preparation
LeetCode practice
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