22 lines
836 B
C++
22 lines
836 B
C++
#include <vector>
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#include <algorithm>
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/**
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* 1051. Height Checker
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* A school is trying to take an annual photo of all the students. The students are asked to stand in a single file line in non-decreasing order by height. Let this ordering be represented by the integer array expected where expected[i] is the expected height of the ith student in line.
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* You are given an integer array heights representing the current order that the students are standing in. Each heights[i] is the height of the ith student in line (0-indexed).
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* Return the number of indices where heights[i] != expected[i].
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*/
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class Solution {
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public:
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static int heightChecker(const std::vector<int>& h) {
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auto x = h;
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std::stable_sort(x.begin(), x.end());
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int ret = 0;
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for (int i = 0; i < x.size(); ++i)
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ret += (x[i] != h[i]);
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return ret;
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}
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};
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