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  1. #include <iostream>
  2. #include <cstddef>
  3. #include <array>
  4. #include <vector>
  5. #include <algorithm>
  6. using namespace std;
  7.  
  8. template <typename T> T max1(const T *arr, const std::size_t size)
  9. {
  10.     T maxValue = arr[0];
  11.     for (size_t i = 1; i < size; ++i)
  12.         if (arr[i] > maxValue)
  13.             maxValue = arr[i];
  14.     return maxValue;
  15. }
  16.  
  17. template <typename T> T max2(const T *first, const T *last)
  18. {
  19.     T maxValue = *first;
  20.     ++first;
  21.     for (; first != last; ++first)
  22.         if (*first > maxValue)
  23.             maxValue = *first;
  24.     return maxValue;    
  25. }
  26.  
  27. template <typename T, std::size_t size> T max3(const T (&arr)[size])
  28. {
  29.     T maxValue = arr[0];
  30.     for (size_t i = 1; i < size; ++i)
  31.         if (arr[i] > maxValue)
  32.             maxValue = arr[i];
  33.     return maxValue;
  34. }
  35.  
  36. template <typename T> T max4(T first, T last)
  37. {
  38.     if (first == last)
  39.         return last;
  40.  
  41.     T maxIt = first;
  42.     ++first;
  43.     for (; first != last; ++first)
  44.         if (*first > *maxIt)
  45.             maxIt = first;
  46.     return maxIt;
  47. }
  48.  
  49. int main() 
  50. {
  51. 	{
  52. 		const size_t SIZE = 5;
  53. 		int arr1[SIZE] = {1, 2, 3, 4, 5};
  54. 		cout << max1(arr1, SIZE) << endl;
  55. 	}
  56.  
  57. 	{
  58. 		const size_t SIZE = 5;
  59. 		double arr2[SIZE] = {1, 2, 3, 4, 5};
  60. 		cout << max2(arr2, arr2 + SIZE) << endl;
  61. 	}
  62.  
  63. 	{
  64. 		const size_t SIZE = 5;
  65. 		double arr3[SIZE] = {1, 2, 3, 4, 5};
  66. 		cout << max3(arr3) << endl;
  67. 	}
  68.  
  69. 	{
  70. 		array<int, 5> arr4 = {1, 2, 3, 4, 5};
  71. 		cout << *max4(arr4.begin(), arr4.end()) << endl;
  72. 	}
  73.  
  74. 	{
  75. 		vector<double> arr5 = {1, 2, 3, 4, 5};
  76. 		cout << *max_element(arr5.begin(), arr5.end()) << endl;
  77. 	}
  78.  
  79. 	return 0;
  80. }
Success #stdin #stdout 0s 4172KB
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https://ideone.com/z9eInC
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
secret

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