Students in a class are asked to stand in ascending order according to their height for annual class photographe help their teacher find the number of students not standing in the correct position
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Explanation:
Return the minimum number of students not standing in the right positions. (This is the number of students that must move in order for all students to be standing in non-decreasing order of height.) Explanation: Students with heights 4, 3 and the last 1 are not standing in the right positions.
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