add: 230828

cpp/2308/LC230828.cpp

@@ -0,0 +1,40 @@
+#include <queue>
+
+class LC230828 {
+private:
+	std::queue<int> q;
+
+public:
+	LC230828();
+	void push(int x);
+	int pop();
+	int top();
+	bool empty();
+};
+
+LC230828::LC230828() = default;
+
+void LC230828::push(int x) {
+	int n = q.size();
+	q.push(x);
+	while (n--) {
+		q.push(q.front());
+		q.pop();
+	}
+}
+
+int LC230828::pop() {
+	int ret = q.front();
+	q.pop();
+	return ret;
+}
+
+int LC230828::top() {
+	return q.front();
+}
+
+bool LC230828::empty() {
+	return q.empty();
+}
+
+

cpp/2308/defs.h

@@ -1,6 +1,7 @@
 #ifndef LEETCODE_CPP_DEFS_H
 #define LEETCODE_CPP_DEFS_H
 
+#include <queue>
 #include <vector>
 
 class LC230827 {
@@ -8,4 +9,17 @@ public:
 	static bool canCross(const std::vector<int>&);
 };
 
+class LC230828 {
+private:
+	std::queue<int> q;
+
+public:
+	LC230828();
+	void push(int x);
+	int pop();
+	int top();
+	bool empty();
+};
+
+
 #endif //LEETCODE_CPP_DEFS_H