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  1. #include <cstddef>
  2. #include <iostream>
  3. #include <algorithm>
  4. #include <string>
  5.  
  6. template <typename iter>
  7. void print(iter begin, iter end, const std::string& separator = " ", const std::string& terminator = "\n", std::ostream& os = std::cout)
  8. {
  9.     while (begin != end)
  10.     {
  11.         os << *begin++ ;
  12.  
  13.         if (begin != end)
  14.             os << separator;
  15.     }
  16.  
  17.     os << terminator;
  18. }
  19.  
  20. void myreverse(int* beg, int* end)
  21. {
  22.     using std::swap;
  23.  
  24.     if (beg && end && beg < --end)
  25.         while (beg < end)
  26.             swap(*beg++, *end--);
  27. }
  28.  
  29. int main()
  30. {
  31.     const std::size_t size = 5;
  32.     int arr[size] = { 1, 2, 3, 4, 5 };
  33.  
  34.     int* arr_beg = arr;
  35.     int* arr_end = arr + size;
  36.  
  37.     print(arr_beg, arr_end, ", ");
  38.  
  39.     std::reverse(arr_beg, arr_end);
  40.     print(arr_beg, arr_end, ", ");
  41.  
  42.     myreverse(arr_beg, arr_end);
  43.     print(arr_beg, arr_end, ", ");
  44. }
Success #stdin #stdout 0s 3428KB
comments (?)
stdin
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Standard input is empty
stdout
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1, 2, 3, 4, 5
5, 4, 3, 2, 1
1, 2, 3, 4, 5
https://ideone.com/DpFU45
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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