406. Queue Reconstruction by Height的C++解法
先把people按照第一項降序排列(第一項一樣的按第二項升序)。然後重新插入即可。
其中要注意的是重寫了sort的比較規則,寫在一個class內需要在函式前加static。
class Solution { public: static bool cmp(pair<int, int> a, pair<int, int> b) { if (a.first == b.first) return a.second < b.second; else return a.first > b.first; } vector<pair<int, int>> reconstructQueue(vector<pair<int, int>>& people) { vector<pair<int, int>> res; if (people.empty()) return res; sort(people.begin(), people.end(),cmp); res.push_back(people[0]); for (int i = 1; i < people.size(); i++) res.insert(res.begin()+people[i].second, 1, people[i]); return res; } };
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