Height Checker

Challenge Points: 10

Level: Easy

A group of students should stand in a line sorted by height.
The sorted arrangement is called expected.
But right now, students are standing in the order given by heights.

Return how many positions in the current order differ from the expected sorted order.

Example 1:

Input: heights = [4,3,2,1]

Output: 4

Explanation:

expected = [1,2,3,4] All four positions are different.

Example 2:

Input: heights = [2,2,2]

Output: 0

Explanation:

expected = [2,2,2] No student is out of place.

to Continue

Accepted:

Submission:

Report an issue

Code

You need toto run or submitYou need toto run or submit

Test Case

Test Result