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  1. #include <iostream>
  2. #include <algorithm>
  3.  
  4. using namespace std;
  5.  
  6. template<typename T>
  7. class MyContainer {
  8. public:
  9.  
  10.     MyContainer(int size) {
  11.         this->size = size;
  12.  
  13.         this->array = new T[this->size];
  14.  
  15.     }
  16.  
  17.     T& operator[](int index) {
  18.  
  19.  
  20.         if (index >= this->size || index < 0) {
  21.  
  22.             cout << "Error, index was out of range!!!" << endl;
  23.  
  24.             return this->array[0];
  25.         }
  26.  
  27.  
  28.         return this->array[index];
  29.  
  30.     }
  31.  
  32.     class Iterator;
  33.  
  34.     Iterator begin() { return this->array; }
  35.     Iterator end() { return this->array + this->size; }
  36.  
  37.     class Iterator
  38.     {
  39.     private:
  40.         T* cur;
  41.     public:
  42.         Iterator(T *first) : cur(first)
  43.         {}
  44.  
  45.         T& operator+ (int n) { return *(cur + n); }
  46.         T& operator- (int n) { return *(cur - n); }
  47.  
  48.         Iterator operator++ (int) { return cur++; }
  49.         Iterator operator-- (int) { return cur--; }
  50.  
  51.         Iterator& operator++ () { ++cur; return *this; }
  52.         Iterator& operator-- () { --cur; return *this; }
  53.  
  54.         bool operator!= (const Iterator& it) { return cur != it.cur; }
  55.         bool operator== (const Iterator& it) { return cur == it.cur; }
  56.  
  57.         T& operator* () { return *cur; }
  58.  
  59.     };
  60.  
  61.     ~MyContainer() {
  62.         delete[] this->array;
  63.     }
  64.  
  65. private:
  66.     int size;
  67.     T* array;
  68. };
  69.  
  70. int main() {
  71.  
  72.     int size = 5;
  73.  
  74.     MyContainer<int> Con(size);
  75.  
  76.     for (int i = 0; i < size; i++) {
  77.         Con[i] = i * 2;
  78.     }
  79.  
  80.     cout << endl << endl;
  81.  
  82.     auto it1 = MyContainer<int>::Iterator(Con.begin());
  83.  
  84.     auto it2 = MyContainer<int>::Iterator(Con.end());
  85.  
  86.     auto result = max_element(it1, it2);
  87.  
  88.     cout << *result << endl;
  89.  
  90.     return 0;
  91. }
  92.  
Success #stdin #stdout 0.01s 5504KB
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https://ideone.com/13H1lS
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
secret

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