154. Find Minimum in Rotated Sorted Array II
Hard
Suppose an array of length n sorted in ascending order is rotated between 1 and n times. For example, the array nums = [0,1,4,4,5,6,7] might become:
[4,5,6,7,0,1,4]if it was rotated4times.[0,1,4,4,5,6,7]if it was rotated7times.
Notice that rotating an array [a[0], a[1], a[2], ..., a[n-1]] 1 time results in the array [a[n-1], a[0], a[1], a[2], ..., a[n-2]].
Given the sorted rotated array nums that may contain duplicates, return the minimum element of this array.
You must decrease the overall operation steps as much as possible.
Example 1:
Input: nums = [1,3,5] Output: 1
Example 2:
Input: nums = [2,2,2,0,1] Output: 0
Constraints:
n == nums.length1 <= n <= 5000-5000 <= nums[i] <= 5000numsis sorted and rotated between1andntimes.
Follow up: This problem is similar to Find Minimum in Rotated Sorted Array, but nums may contain duplicates. Would this affect the runtime complexity? How and why?
class Solution:
def findMin(self, nums: List[int]) -> int:
#return min(nums)
left = 0
right = len(nums)-1
while left < right:
mid = (left + right)//2
if nums[right] < nums[mid]:
left = mid+1
elif nums[right] > nums[mid]:
right = mid
else:
right -= 1
return nums[left]