Find K-th Rotation 🔁 | Rotated Sorted Array Count (Amazon, Google, Apple Interviews)
Find K-th Rotation 🔁 | Rotated Sorted Array Count (Amazon, Google, Apple Interviews)
Learn how to **find the number of right rotations** (K-th rotation count) in a rotated sorted array using an efficient **O(log n)** binary-search approach!
✅ Interviewed by top companies:
- Amazon
- Google
- Apple
- Microsoft
- Bloomberg
- Adobe
- LinkedIn
- Uber
📌 In this video you’ll get:
1️⃣ Why the rotation count equals the **index of the minimum element**
2️⃣ Two methods:
• Simple O(n) linear scan
• Optimized O(log n) binary search by finding the **pivot point**
3️⃣ Live C++ code walkthrough for both methods
4️⃣ Edge-case handling (single-element, no rotation, full rotation)
5️⃣ Time/space complexity: O(log n), O(1)
6️⃣ Example problems using this pattern like:
* Find minimum in rotated array
* Search in rotated array (LeetCode 33)
* Kth rotation variations
💡 **Why it matters:**
Counting rotations or finding pivots is a core stepping-stone to mastering rotated-array problems—a frequent theme in **FAANG and Big-Tech interviews**.
👍🏼 If you found this helpful: Like, Subscribe & leave your toughest rotated-array cases—I’ll solve them next!
Видео Find K-th Rotation 🔁 | Rotated Sorted Array Count (Amazon, Google, Apple Interviews) канала Pen And Paper
Learn how to **find the number of right rotations** (K-th rotation count) in a rotated sorted array using an efficient **O(log n)** binary-search approach!
✅ Interviewed by top companies:
- Amazon
- Apple
- Microsoft
- Bloomberg
- Adobe
- Uber
📌 In this video you’ll get:
1️⃣ Why the rotation count equals the **index of the minimum element**
2️⃣ Two methods:
• Simple O(n) linear scan
• Optimized O(log n) binary search by finding the **pivot point**
3️⃣ Live C++ code walkthrough for both methods
4️⃣ Edge-case handling (single-element, no rotation, full rotation)
5️⃣ Time/space complexity: O(log n), O(1)
6️⃣ Example problems using this pattern like:
* Find minimum in rotated array
* Search in rotated array (LeetCode 33)
* Kth rotation variations
💡 **Why it matters:**
Counting rotations or finding pivots is a core stepping-stone to mastering rotated-array problems—a frequent theme in **FAANG and Big-Tech interviews**.
👍🏼 If you found this helpful: Like, Subscribe & leave your toughest rotated-array cases—I’ll solve them next!
Видео Find K-th Rotation 🔁 | Rotated Sorted Array Count (Amazon, Google, Apple Interviews) канала Pen And Paper
kth rotation count rotated sorted array find rotation count amazon interview question google interview question apple coding interview binary search rotated array pivot in rotated array geeksforgeeks rotation coding interview rotation problem leetcode rotation problems rotated array pattern faang prep algorithms
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30 июня 2025 г. 19:00:06
00:10:58
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