Sorted Mismatch Count

You are given an integer array nums.

Let sorted be nums arranged in non-decreasing order. Return the number of indices i where nums[i] != sorted[i].

Examples

Example 1

Input: nums = [1, 1, 4, 2, 1, 3]
Output: 3
Explanation: sorted = [1, 1, 1, 2, 3, 4]. Indices 2, 4, and 5 differ.

Example 2

Input: nums = [5, 1, 2, 3, 4]
Output: 5
Explanation: sorted = [1, 2, 3, 4, 5]. Every index differs.

Example 3

Input: nums = [1, 2, 3, 4, 5]
Output: 0