Given an array A, partition it into two (contiguous) subarrays left and right so that:
- Every element in
leftis less than or equal to every element inright. leftandrightare non-empty.lefthas the smallest possible size.
Return the length of left after such a partitioning. It is guaranteed that such a partitioning exists.
Example 1:
Input: [5,0,3,8,6]
Output: 3
Explanation: left = [5,0,3], right = [8,6]
Example 2:
Input: [1,1,1,0,6,12]
Output: 4
Explanation: left = [1,1,1,0], right = [6,12]
Note:
2 <= A.length <= 300000 <= A[i] <= 10^6- It is guaranteed there is at least one way to partition
Aas described.