Create main.cpp

submission/exercise-10/chan/main.cpp

@@ -0,0 +1,121 @@
+#include <iostream>
+#include <cstdint>
+#include <algorithm>
+
+using namespace std;
+
+template<typename T>
+class MyVector {
+public:
+    MyVector(const int& size = 3) {
+        data_ = new T[size];
+        capacity_ = size;
+        size_ = 0;
+    }
+
+    MyVector(const MyVector& t) : capacity_(t.capacity_), size_(t.size_) {
+        data_ = new T[capacity_];
+        copy(t.data_, t.data_ + t.size, data_);
+    }
+
+    MyVector(MyVector&& t) noexcept : capacity_(t.capacity_), size_(t.size_), data_(t.data_) {
+        t.data_ = nullptr;
+        t.size_ = 0;
+        t.capacity_ = 0;
+    }
+
+    MyVector& operator=(const MyVector& t) {
+
+        capacity_ = t.capacity_;
+        size_ = t.size_;
+        delete[] data_;
+
+        data_ = new T[capacity_];
+        copy(t.data_, t.data_ + t.size, data_);
+
+        return *this;
+    }
+
+    MyVector& operator=(MyVector&& t) noexcept {
+
+            delete[] data_;
+            data_ = t.data_;
+            capacity_ = t.capacity_;
+            size_ = t.size_;
+
+            t.data_ = nullptr;
+            t.data_ = 0;
+            t.capacity_ = 0;
+
+        return *this;
+    }
+
+    ~MyVector() { delete[] data_; }
+
+    void push_back(const T& data) {
+        if (size_ >= capacity_) {
+            // 용량 늘리기
+            capacity_ = capacity_ * 2;
+            // 메모리 새로 할당
+            T* new_data = new T[capacity_];
+
+            // 기존 데이터 복사
+            copy(data_, data_ + size_, new_data);
+
+            // 기존 메모리 해제
+            delete[] data_;
+
+            // 기존 포인터 대체
+            data_ = new_data;
+        }
+
+        data_[size_] = data;
+        size_++;
+    }
+
+    void pop_back(const T& data) {
+        size_ = size_ > 0 ? size_ - 1 : 0;
+    }
+
+    /* return-type */
+    T& operator[](size_t i) { return data_[i]; }
+
+    const T& operator[](size_t i) const { return data_[i]; }
+
+    size_t size() const { return size_; }
+
+private:
+    T* data_;
+    size_t size_;
+    size_t capacity_;
+    // Define other member variables if necessary
+};
+
+
+// Use case
+int main() {
+
+    {
+        MyVector<int> v;
+
+        v.push_back(1); // v.size() == 1
+        cout << v.size() << "\n";
+        v.push_back(2); // v.size() == 2
+        cout << v.size() << "\n";
+        v.push_back(3); // v.size() == 3
+        cout << v.size() << "\n";
+        v.push_back(4); // v.size() == 4
+        cout << v.size() << "\n";
+        v.push_back(5); // v.size() == 5
+        cout << v.size() << "\n\n";
+
+        MyVector<int> v2 = move(v);
+
+        cout << v2.size() << "\n";
+        cout << v.size() << "\n";
+
+    } // v 소멸
+
+
+    return 0;
+}