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Grokking the Coding Interview Patterns in C#

Find Minimum in Rotated Sorted Array

Explore how to identify the minimum value in a rotated sorted array efficiently. This lesson guides you through understanding the problem, recognizing array rotations, and implementing an optimal binary search approach that runs in logarithmic time and constant space.

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Statement

You’re given a rotated sorted array, arr, of length nn, that is rotated clockwise between 11 and nn times.

For example,

  • Before rotation, arr =[1,2,3,4,5,6,7,8]= [1,2,3,4,5,6,7,8]

  • After 33 rotations, the array becomes [6,7,8,1,2,3,4,5][6,7,8,1,2,3,4,5] ...