C++ 函数泛型化策略

template <typename T>
T max(T a, T b) {
  return (a > b) ? a : b;
}

template <typename T>
class Array {
public:
  Array(int size);
  T& operator[](int index);
private:
  T* data;
  int size;
};

template <typename T>
void print(T value);

template <>
void print<std::string>(std::string value) {
  std::cout << "String: " << value << std::endl;
}

#include <iostream>

template <typename T>
T max(T arr[], int size) {
  T max_element = arr[0];  // 初始化最大值
  for (int i = 1; i < size; i++) {
    if (arr[i] > max_element) {
      max_element = arr[i];
    }
  }
  return max_element;
}

int main() {
  int arr[] = {1, 3, 5, 7, 9};
  int size = sizeof(arr) / sizeof(arr[0]);

  std::cout << "最大整型： " << max(arr, size) << std::endl;

  float farr[] = {1.2f, 3.4f, 5.6f, 7.8f, 9.0f};
  size = sizeof(farr) / sizeof(farr[0]);

  std::cout << "最大浮点型： " << max(farr, size) << std::endl;

  std::string sarr[] = {"apple", "banana", "cherry", "dog", "eat"};
  size = sizeof(sarr) / sizeof(sarr[0]);

  std::cout << "最大字符串： " << max(sarr, size) << std::endl;
}