154. Find Minimum in Rotated Sorted Array II

 1     public int findMin(int[] nums) {
 2         if(nums.length == 0) {
 3             return -1;
 4         }
 5         int left = 0;
 6         int right = nums.length - 1;
 7         while(left < right) {
 8             int mid = left + (right - left) / 2;
 9             if(nums[mid] > nums[right]) {
10                 left = mid + 1;
11             } else if(nums[mid] < nums[right]) {
12                 right = mid;
13             } else {
14                 right--;
15             }
16         }
17         return nums[left];
18     }