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Grokking the Coding Interview Patterns in C++

Solution: Find Minimum in Rotated Sorted Array II

Understand how to efficiently find the minimum element in a rotated sorted array that may contain duplicates by applying a modified binary search algorithm. This lesson helps you master boundary adjustments and search space reduction techniques to handle duplicates and rotations, improving your problem-solving skills for coding interviews.

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Statement

Imagine you have an array, nums, of length nn that was originally sorted in non-decreasing (ascending) order. This array has been rotated between 11 and nn times. For example, the sorted array [0,2,3,3,5,7,11][0,2,3,3,5,7,11] can become:

  • [5,7,11,0,2,3,3][5,7,11,0,2,3,3] ...