Search in Rotated Sorted Array | Binary Search Pattern | C++ Java Python
In this video, we solve the Search in Rotated Sorted Array problem step by step using the Binary Search pattern.
First, we understand why the normal binary search approach does not directly work when the sorted array is rotated. Then we learn the key observation that at least one half of the array will always remain sorted.
Using this idea, we identify the sorted half and check whether the target lies in that range. Based on that, we eliminate half of the search space and continue the binary search.
In this video we cover:
Understanding rotated sorted arrays
How to identify the sorted half during binary search
How to decide where the target can exist
Optimized solution with O(log n) time complexity
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