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Search in Rotated Sorted Array II

Explore how to efficiently search for a target integer in a rotated and sorted array of non-distinct integers using a modified binary search technique. This lesson helps you understand the problem constraints, develop a logical approach, and practice implementing a solution that optimizes time and space complexity.

Statement

You are required to find an integer value target in an array arr of non-distinct integers. Before being passed as input to your search function, arr has been processed as follows:

  • It has been sorted in non-descending order.

  • It has been rotated around some pivot kk, such that, after rotation, it looks like this: [nums[k], nums[k+1], ..., nums[n-1], nums[0], nums[1], ..., nums[k-1]]. For example, [10, 30, 40, 42, 42, 47, 78, 90, 901], rotated around pivot k=5k=5 ...