In this video, we solve LeetCode Problem 189 – Rotate Array using the optimal in-place approach.
💡 Problem:
Given an integer array nums, rotate the array to the right by k steps.
🔥 What you'll learn in this video:
- Clear problem understanding
- Optimal approach using reversal technique
- Step-by-step explanation
- Time and space complexity analysis
🧠 Approach Used:
We use the reversal algorithm:
1. Reverse the entire array
2. Reverse first k elements
3. Reverse remaining elements
⏱️ Complexity:
Time Complexity: O(n)
Space Complexity: O(1)
📌 This method is optimal and efficient for large inputs.
👍 If you found this helpful:
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📚 More DSA videos coming soon:
- Arrays
- Strings
- Sliding Window
- Binary Search
- Graphs
#LeetCode #DSA #Coding #CPP #Algorithms #InterviewPrep #RotateArray
