Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand.
(i.e., [0,1,2,4,5,6,7]
might become [4,5,6,7,0,1,2]
).
Find the minimum element.
The array may contain duplicates.
Example 1:
Input: [1,3,5]
Output: 1
Example 2:
Input: [2,2,2,0,1]
Output: 0
Note:
class Solution {
public:
int findMin(vector<int>& nums) {
int left = 0;
int right = nums.size() - 1;
while(left < right) {
int mid = (left + right) >> 1;
if(nums[mid] > nums[right])
left = mid + 1;
else if(nums[mid] < nums[right])
right = mid;
else {
if(nums[left] == nums[mid])
left++, right--;
else
right = mid;
}
}
return nums[right];
}
};