@jianchao.li.fighter Assume the original array is [1,1,1,1,1,1,1,1,1,1,2] If you rotate the array to the left by 2 positions you will get [1,1,1,1,1,1,1,1,2,1,1], and the starting index of the minimum element should be 9. I dont see on any senario index 0 can be the starting index of minimum element.

Find Minimum in Rotated Sorted Array II