实验任务4
1 #pragma once 2 #include <iostream> 3 #include <stdexcept> 4 5 template <class T> 6 class Vector { 7 private: 8 T* data; 9 size_t size; 10 11 public: 12 Vector() : data(nullptr), size(0) {} 13 14 Vector(size_t initialSize, const T& value = T()) : size(initialSize) { 15 data = new T[size]; 16 for (size_t i = 0; i < size; i++) { 17 data[i] = value; 18 } 19 } 20 21 Vector(const Vector& other) : size(other.size) { 22 data = new T[size]; 23 for (size_t i = 0; i < size; i++) { 24 data[i] = other.data[i]; 25 } 26 } 27 28 ~Vector() { 29 delete[] data; 30 } 31 32 size_t get_size() const { 33 return size; 34 } 35 36 T& at(size_t index) { 37 if (index >= size) { 38 throw std::out_of_range("Index out of range"); 39 } 40 return data[index]; 41 } 42 43 T& operator[](size_t index) { 44 if (index >= size) { 45 throw std::out_of_range("Index out of range"); 46 } 47 return data[index]; 48 } 49 50 friend void output(const Vector& vec) { 51 for (size_t i = 0; i < vec.size; i++) { 52 std::cout << vec.data[i] << " "; 53 } 54 std::cout << std::endl; 55 } 56 };
1 #include <iostream> 2 #include "Vector.hpp" 3 void test() { 4 using namespace std; 5 int n; 6 cin >> n; 7 Vector<double> x1(n); 8 for(auto i = 0; i < n; ++i) 9 x1.at(i) = i * 0.7; 10 output(x1); 11 Vector<int> x2(n, 42); 12 Vector<int> x3(x2); 13 output(x2); 14 output(x3); 15 x2.at(0) = 77; 16 output(x2); 17 x3[0] = 999; 18 output(x3); 19 } 20 int main() { 21 test(); 22 }
运行测试截图（换一组测试数据）：
实验任务5
1 #include<iostream> 2 #include<fstream> 3 4 void output(std::ostream &out) { 5 for (int i = 0; i <= 26; i++) { 6 out.width(2); 7 if (i == 0) out << ' '; 8 else out << i; 9 for (int j = 0; j <= 26; j++) { 10 out << ' '; 11 if (i == 0) out << (char)('a' + (i + j) % 26); 12 else out << (char)('A' + (i + j) % 26); 13 } 14 out << '\n'; 15 } 16 } 17 void output() { 18 output(std::cout); 19 std::ofstream ofile; 20 ofile.open("cipher_key.txt"); 21 output(ofile); 22 ofile.close(); 23 } 24 int main() { 25 output(); 26 }
运行结果截图
