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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <iterator>
  4. #include <vector>
  5. #include <list>
  6.  
  7. template <class InputIterator1, class InputIterator2>
  8. bool myequal(InputIterator1 first1, InputIterator1 last1, InputIterator2 first2, InputIterator2 last2)
  9. {
  10.   typename std::iterator_traits<InputIterator1>::difference_type len1 = std::distance(first1, last1);
  11.   typename std::iterator_traits<InputIterator2>::difference_type len2 = std::distance(first2, last2);
  12.  
  13.   if (len1 != len2)
  14.     return false;
  15.  
  16.   return std::equal(first1, last1, first2);
  17. }
  18.  
  19. int main()
  20. {
  21.   int a[] = {1, 10, 3, 5, 6, 5, 2, 9};
  22.   int b[] = {1, 10, 3, 5, 6, 5, 2};
  23.  
  24.   size_t size_a = sizeof(a) / sizeof(a[0]);
  25.   size_t size_b = sizeof(b) / sizeof(b[0]);
  26.  
  27.   bool eqb = myequal(a, a +size_a, b, b + size_b);
  28.   std::cout << "a[]とb[]は" << ((eqb) ? "等しい" : "等しくない") << std::endl;
  29.  
  30.   eqb = myequal(b, b + size_b, a, a + size_a);
  31.   std::cout << "a[]とb[]は" << ((eqb) ? "等しい" : "等しくない") << std::endl;
  32.  
  33.   std::vector<int> vi(a, a + size_a);
  34.   std::list<int> li(b, b + size_b);
  35.  
  36.   eqb = myequal(vi.begin(), vi.end(), li.begin(), li.end());
  37.   std::cout << "viとliは" << ((eqb) ? "等しい" : "等しくない") << std::endl;
  38.  
  39.   li.push_back(9);
  40.  
  41.   eqb = myequal(vi.begin(), vi.end(), li.begin(), li.end());
  42.   std::cout << "viとliは" << ((eqb) ? "等しい" : "等しくない") << std::endl;
  43. }
  44.  
Success #stdin #stdout 0s 2984KB
comments (?)
stdin
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Standard input is empty
stdout
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a[]とb[]は等しくない
a[]とb[]は等しくない
viとliは等しくない
viとliは等しい
https://ideone.com/AcLs5d
language:
C++ (gcc 8.3)
created:
11 years ago
visibility:
public

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