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Problem: Find Minimum in Rotated Sorted Array II

Medium
30 min
Explore how to identify the minimum element in a rotated sorted array with duplicates. This lesson teaches you to apply modified binary search techniques to solve this problem efficiently by minimizing operations and handling duplicates effectively.

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], if rotated 33 times

  • [0,2,3,3,5,7,11][0,2,3,3,5,7,11], if rotated 77 times

A single rotation moves the last element to the front. So, if the original array is [a[0],a[1],...,a[n1]][a[0], a[1], ..., a[n-1]], rotating it once produces [a[n1],a[0],a[1],...,a[n2]][a[n-1], a[0], a[1], ..., a[n-2]].

You are given a sorted, rotated array, nums, that may include duplicate elements. Your job is to return the minimum element in the array.

Try to solve this problem with the fewest possible operations.

Constraints:

  • n==n == nums.length

  • 1n10001 \leq n \leq 1000

  • 1000-1000 \leq nums[i] 1000\leq 1000

  • nums is sorted and rotated between 11 and nn times.

Problem
Ask
Submissions

Problem: Find Minimum in Rotated Sorted Array II

Medium
30 min
Explore how to identify the minimum element in a rotated sorted array with duplicates. This lesson teaches you to apply modified binary search techniques to solve this problem efficiently by minimizing operations and handling duplicates effectively.

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], if rotated 33 times

  • [0,2,3,3,5,7,11][0,2,3,3,5,7,11], if rotated 77 times

A single rotation moves the last element to the front. So, if the original array is [a[0],a[1],...,a[n1]][a[0], a[1], ..., a[n-1]], rotating it once produces [a[n1],a[0],a[1],...,a[n2]][a[n-1], a[0], a[1], ..., a[n-2]].

You are given a sorted, rotated array, nums, that may include duplicate elements. Your job is to return the minimum element in the array.

Try to solve this problem with the fewest possible operations.

Constraints:

  • n==n == nums.length

  • 1n10001 \leq n \leq 1000

  • 1000-1000 \leq nums[i] 1000\leq 1000

  • nums is sorted and rotated between 11 and nn times.