diff --git a/includes/iterator.hpp b/includes/iterator.hpp
index 0c575d3..4e46896 100644
--- a/includes/iterator.hpp
+++ b/includes/iterator.hpp
@@ -9,19 +9,18 @@ struct forward_iterator_tag : public input_iterator_tag {};
 struct bidirectional_iterator_tag : public forward_iterator_tag {};
 struct random_access_iterator_tag : public bidirectional_iterator_tag {};
 
-template < class Iter > struct iterator_traits {
-  typedef typename Iter::iterator_category iterator_category;
-  typedef typename Iter::value_type        value_type;
-  typedef typename Iter::difference_type   difference_type;
-  typedef typename Iter::pointer           pointer;
-  typedef typename Iter::reference         reference;
+template < class Iterator > struct iterator_traits {
+  typedef typename Iterator::iterator_category iterator_category;
+  typedef typename Iterator::value_type        value_type;
+  typedef typename Iterator::difference_type   difference_type;
+  typedef typename Iterator::pointer           pointer;
+  typedef typename Iterator::reference         reference;
 };
 
 template < class T > struct iterator_traits< T * > {
-public:
   typedef random_access_iterator_tag iterator_category;
   typedef T                          value_type;
-  typedef std::ptrdiff_t             difference_type;
+  typedef ptrdiff_t                  difference_type;
   typedef T                         *pointer;
   typedef T                         &reference;
 };
@@ -29,162 +28,129 @@ public:
 template < class T > struct iterator_traits< const T * > {
   typedef random_access_iterator_tag iterator_category;
   typedef T                          value_type;
-  typedef std::ptrdiff_t             difference_type;
-  typedef const T                   *pointer;
-  typedef const T                   &reference;
+  typedef ptrdiff_t                  difference_type;
+  typedef T                         *pointer;
+  typedef T                         &reference;
 };
 
 // Iterator classes:
+template < class Category, class T, class Distance = ptrdiff_t,
+           class Pointer = T *, class Reference = T & >
+struct iterator {
+  typedef Category  iterator_category;
+  typedef T         value_type;
+  typedef Distance  difference_type;
+  typedef Pointer   pointer;
+  typedef Reference reference;
+};
 
-template < class T > class ra_iterator {
-  typedef random_access_iterator_tag iterator_category;
-  typedef T                          value_type;
-  typedef std::ptrdiff_t             difference_type;
-  typedef T                         *pointer;
-  typedef T                         &reference;
-  pointer                                  current;
+template < class T >
+class random_access_iterator
+    : public iterator< random_access_iterator_tag, T > {
 
 public:
-  ra_iterator(pointer value = NULL) : current(value) {}
-  ra_iterator(const ra_iterator &iter) : current(iter.base()) {}
-
-  ra_iterator &operator=(const ra_iterator< T  > &iter) {
-    current = iter.base();
-    return (*this);
-  }
+  typedef typename iterator< random_access_iterator_tag, T >::iterator_category
+      iterator_category;
+  typedef
+      typename iterator< random_access_iterator_tag, T >::value_type value_type;
+  typedef typename iterator< random_access_iterator_tag, T >::difference_type
+             difference_type;
+  typedef T *pointer;
+  typedef T &reference;
+
+private:
+  pointer _ptr;
 
-  pointer         base(void) const { return current; }
-  reference operator*(void) const { return *current; }
-  pointer   operator->(void) const { return current; }
-  reference operator[](const difference_type n) const { return *(current + n); }
+public:
+  random_access_iterator(pointer ptr = NULL) : _ptr(ptr) {}
+  random_access_iterator(const random_access_iterator &other)
+      : _ptr(other._ptr) {}
 
-  ra_iterator operator+(const difference_type n) const {
-    return (ra_iterator(current + n));
-  }
-  ra_iterator &operator++() {
-    ++current;
+  random_access_iterator &operator=(const random_access_iterator &other) {
+    _ptr = other._ptr;
     return *this;
   }
-  ra_iterator operator++(int) {
-    ra_iterator tmp(*this);
-    ++(*this);
-    return tmp;
+
+  pointer   base(void) { return _ptr; }
+  pointer   operator->(void) { return _ptr; }
+  reference operator*(void) { return *_ptr; }
+  reference operator[](const difference_type n) { return *(_ptr + n); }
+
+  random_access_iterator operator+(const difference_type n) const {
+    return (random_access_iterator(_ptr + n));
   }
-  ra_iterator &operator+=(const difference_type other) {
-    current += other;
-    return *this;
+  difference_type operator+(const random_access_iterator &right) const {
+    return _ptr + right._ptr;
   }
 
-  ra_iterator operator-(const difference_type n) const {
-    return (iterator(current - n));
+  friend random_access_iterator operator+(const difference_type   n,
+                                          random_access_iterator &right) {
+    return random_access_iterator(right._ptr + n);
   }
-  ra_iterator &operator--() {
-    --current;
+  random_access_iterator &operator++() {
+    ++_ptr;
     return *this;
   }
-  ra_iterator operator--(int) {
-    ra_iterator tmp(*this);
-    --(*this);
-    return tmp;
+  random_access_iterator operator++(int) {
+    random_access_iterator ret(*this);
+    ++(*this);
+    return ret;
   }
-  ra_iterator &operator-=(const difference_type other) {
-    current -= other;
+  random_access_iterator &operator+=(const difference_type n) {
+    _ptr += n;
     return *this;
   }
 
-  bool operator==(const ra_iterator &right) const {
-    return current == right.base();
-  }
-  bool operator!=(const ra_iterator &right) const {
-    return current != right.base();
-  }
-  bool operator<(const ra_iterator &right) const {
-    return current < right.base();
+  random_access_iterator operator-(const difference_type n) const {
+    return (random_access_iterator(_ptr - n));
   }
-  bool operator>(const ra_iterator &right) const {
-    return current > right.base();
+  difference_type operator-(const random_access_iterator &right) const {
+    return _ptr - right._ptr;
   }
-  bool operator<=(const ra_iterator &right) const {
-    return current <= right.base();
+  friend random_access_iterator operator-(const difference_type   n,
+                                          random_access_iterator &right) {
+    return random_access_iterator(right._ptr - n);
   }
-  bool operator>=(const ra_iterator &right) const {
-    return current >= right.base();
-  }
-};
-
-template < class T > class rev_iterator {
-  T                                  current;
-  typedef random_access_iterator_tag iterator_category;
-  typedef T                          value_type;
-  typedef std::ptrdiff_t             difference_type;
-  typedef T                         *pointer;
-  typedef T                         &reference;
-
-public: 
-  template <class It>
-  rev_iterator(It value = NULL) : current(value) {} 
-  rev_iterator(const rev_iterator &iter) : current(iter.base()) {} 
-  rev_iterator &operator=(const rev_iterator< T > &iter) {
-      current = iter.base();
-      return (*this);
-  }
-
-  T         base(void) const { return current; }
-  reference operator*(void) const { return *(current - 1); }
-  pointer   operator->(void) const { return current - 1; }
-  reference operator[](const difference_type n) const { return *(current - n); }
-
-  rev_iterator operator+(const difference_type n) const {
-    return (rev_iterator(current - n));
-  }
-  rev_iterator &operator++() {
-    --current;
+  random_access_iterator &operator--() {
+    --_ptr;
     return *this;
   }
-  rev_iterator operator++(int) const {
-    rev_iterator tmp(*this);
+  random_access_iterator operator--(int) {
+    random_access_iterator ret(*this);
     --(*this);
-    return tmp;
+    return ret;
   }
-  rev_iterator &operator+=(const difference_type n) {
-    current -= n;
+  random_access_iterator &operator-=(const difference_type n) {
+    _ptr -= n;
     return *this;
   }
 
-  rev_iterator operator-(const difference_type n) const {
-    return (rev_iterator(current + n));
+  friend bool operator==(const random_access_iterator &left,
+                         const random_access_iterator &right) {
+    return left._ptr == right._ptr;
   }
-  rev_iterator &operator--() {
-    ++current;
-    return *this;
-  }
-  rev_iterator operator--(int) {
-    rev_iterator tmp(*this);
-    ++(*this);
-    return tmp;
-  }
-  rev_iterator &operator-=(const difference_type n) {
-    current += n;
-    return *this;
-  }
-
-  bool operator==(const rev_iterator< T > &right) const {
-    return current == right.base();
+  friend bool operator!=(const random_access_iterator &left,
+                         const random_access_iterator &right) {
+    return left._ptr != right._ptr;
   }
-  bool operator!=(const rev_iterator< T > &right) const {
-    return current != right.base();
+  friend bool operator<(const random_access_iterator &left,
+                        const random_access_iterator &right) {
+    return left._ptr < right._ptr;
   }
-  bool operator<(const rev_iterator< T > &right) const {
-    return current >= right.base();
+  friend bool operator<=(const random_access_iterator &left,
+                         const random_access_iterator &right) {
+    return left._ptr <= right._ptr;
   }
-  bool operator>(const rev_iterator< T > &right) const {
-    return current <= right.base();
+  friend bool operator>(const random_access_iterator &left,
+                        const random_access_iterator &right) {
+    return left._ptr > right._ptr;
   }
-  bool operator<=(const rev_iterator< T > &right) const {
-    return current > right.base();
+  friend bool operator>=(const random_access_iterator &left,
+                         const random_access_iterator &right) {
+    return left._ptr >= right._ptr;
   }
-  bool operator>=(const rev_iterator< T > &right) const {
-    return current < right.base();
+  operator random_access_iterator< const T >() const {
+    return random_access_iterator< const T >(_ptr);
   }
 };
 
diff --git a/includes/reverse_iterator.hpp b/includes/reverse_iterator.hpp
new file mode 100644
index 0000000..eb6d995
--- /dev/null
+++ b/includes/reverse_iterator.hpp
@@ -0,0 +1,121 @@
+#pragma once
+#include "iterator.hpp"
+
+namespace ft {
+template < class Iterator > class reverse_iterator {
+public:
+  typedef Iterator                             iterator_type;
+  typedef typename Iterator::iterator_category iterator_category;
+  typedef typename Iterator::value_type        value_type;
+  typedef typename Iterator::difference_type   difference_type;
+  typedef typename Iterator::pointer          *pointer;
+  typedef typename Iterator::reference        &reference;
+
+private:
+  Iterator _base;
+
+public:
+  reverse_iterator(Iterator value = NULL) : _base(value) {}
+
+  template < typename T >
+  reverse_iterator(const reverse_iterator< T > &iter) : _base(iter.base()) {}
+
+  reverse_iterator &operator=(const reverse_iterator &other) {
+    _base = other._base;
+    return *this;
+  }
+
+  Iterator base(void) const { return _base; }
+
+  reference operator*(void) const {
+    Iterator ret = _base;
+    return *(--ret);
+  }
+  reverse_iterator operator+(const difference_type n) const {
+    return (reverse_iterator(_base - n));
+  }
+  reverse_iterator &operator++(void) {
+    --_base;
+    return *this;
+  }
+  reverse_iterator operator++(int) const {
+    reverse_iterator ret(*this);
+    --(*this);
+    return ret;
+  }
+  reverse_iterator &operator+=(const difference_type n) {
+    _base -= n;
+    return *this;
+  }
+
+  reverse_iterator operator-(const difference_type n) const {
+    return (reverse_iterator(_base + n));
+  }
+  reverse_iterator &operator--(void) {
+    ++_base;
+    return *this;
+  }
+  reverse_iterator operator--(int) {
+    reverse_iterator ret(*this);
+    ++(*this);
+    return ret;
+  }
+  reverse_iterator &operator-=(const difference_type n) {
+    _base += n;
+    return *this;
+  }
+
+  pointer   operator->(void) const { return &(operator*()); }
+  reference operator[](const difference_type n) const { return base()[-n-1]; }
+
+  template < typename It >
+  friend reverse_iterator operator+(const int                     n,
+                                    const reverse_iterator< It > &op) {
+    return reverse_iterator(op._base - n);
+  }
+};
+
+template < typename It1, typename It2 >
+bool operator==(const reverse_iterator< It1 > &lhs,
+                const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() == rhs.base());
+}
+
+template < typename It1, typename It2 >
+bool operator!=(const reverse_iterator< It1 > &lhs,
+                const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() != rhs.base());
+}
+
+template < typename It1, typename It2 >
+bool operator<(const reverse_iterator< It1 > &lhs,
+               const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() > rhs.base());
+}
+
+template < typename It1, typename It2 >
+bool operator<=(const reverse_iterator< It1 > &lhs,
+                const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() >= rhs.base());
+}
+
+template < typename It1, typename It2 >
+bool operator>(const reverse_iterator< It1 > &lhs,
+               const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() < rhs.base());
+}
+
+template < typename It1, typename It2 >
+bool operator>=(const reverse_iterator< It1 > &lhs,
+                const reverse_iterator< It2 > &rhs) {
+  return (lhs.base() <= rhs.base());
+}
+
+template < class It1, class It2 >
+typename reverse_iterator< It1 >::difference_type
+operator-(const reverse_iterator< It1 > &lhs,
+          const reverse_iterator< It2 > &rhs) {
+  return lhs.base() - rhs.base();
+}
+
+} // namespace ft
diff --git a/includes/vector.hpp b/includes/vector.hpp
index e1f1273..7c21b27 100644
--- a/includes/vector.hpp
+++ b/includes/vector.hpp
@@ -1,5 +1,6 @@
 #pragma once
 #include "iterator.hpp"
+#include "reverse_iterator.hpp"
 #include "utils.hpp"
 
 #include <iostream>
@@ -8,33 +9,33 @@
 
 namespace ft {
 
-template < class T, class Allocator = std::allocator< T > > class vector {
+template < class T, class Alloc = std::allocator< T > > class vector {
 public:
-  typedef T                                 value_type;
-  typedef Allocator                         allocator_type;
-  typedef typename Allocator::pointer       pointer;
-  typedef typename Allocator::const_pointer cst_pointer;
-  typedef value_type                       &reference;
-  typedef const value_type                 &cst_reference;
-  typedef ft::ra_iterator< reference >      iterator;
-  typedef ft::ra_iterator< cst_reference >  cst_iterator;
-  typedef ft::rev_iterator< iterator >      reverse_iterator;
-  typedef ft::rev_iterator< cst_iterator >  cst_reverse_iterator;
-  typedef std::ptrdiff_t                    difference_type;
-  typedef std::size_t                       size_type;
+  typedef T                                      value_type;
+  typedef Alloc                                  allocator_type;
+  typedef typename Alloc::pointer                pointer;
+  typedef typename Alloc::const_pointer          const_pointer;
+  typedef value_type                            &reference;
+  typedef const value_type                      &const_reference;
+  typedef ft::random_access_iterator< T >        iterator;
+  typedef ft::random_access_iterator< const T >  const_iterator;
+  typedef ft::reverse_iterator< iterator >       reverse_iterator;
+  typedef ft::reverse_iterator< const_iterator > const_reverse_iterator;
+  typedef std::ptrdiff_t                         difference_type;
+  typedef std::size_t                            size_type;
 
 private:
-  Allocator _alloc;
+  Alloc     _alloc;
   pointer   _begin;
   size_type _size;
   size_type _capacity;
 
 public:
-  explicit vector(const Allocator &alloc = allocator_type())
+  explicit vector(const Alloc &alloc = allocator_type())
       : _alloc(alloc), _begin(NULL), _size(0), _capacity(0){};
 
-  explicit vector(size_type count, cst_reference value = T(),
-                  const Allocator &alloc = allocator_type())
+  explicit vector(size_type count, const_reference value = T(),
+                  const Alloc &alloc = allocator_type())
       : _alloc(alloc), _size(count), _capacity(count) {
     _begin = _alloc.allocate(count);
     for (size_type i = 0; i < count; i++)
@@ -42,14 +43,14 @@ public:
   }
 
   template < class It >
-  vector(It first, It last, const Allocator &alloc = allocator_type(),
+  vector(It first, It last, const Alloc &alloc = allocator_type(),
          typename ft::enable_if< !is_integral< It >::value, bool >::type = 0)
       : _alloc(alloc) {
-    _size = distance(first, last);
+    _size = ft::distance(first, last) - 1;
     _capacity = _size;
     _begin = _alloc.allocate(_size);
     for (size_type i = 0; i < _size; i++)
-      _alloc.construct(_begin + i, first[i]);
+      _alloc.construct(_begin + i, *(first++));
   }
 
   vector(const vector &other)
@@ -77,23 +78,23 @@ public:
     return (*this);
   }
 
-  void assign(size_type count, cst_reference value) {
+  void assign(size_type count, const_reference value) {
     resize(count);
-    do {
+    while (count--) {
       _alloc.destroy(_begin + count);
       _alloc.construct(_begin + count, value);
-    } while (count-- > 0);
+    };
   }
   template < class It >
   void
   assign(It first, It last,
          typename ft::enable_if< !is_integral< It >::value, bool >::type = 0) {
-    size_type i = ft::distance(first, last);
-    resize(i);
-    do {
-      _alloc.destroy(_begin + i);
-      _alloc.construct(_begin + i, first[i]);
-    } while (i-- > 0);
+    size_type count = ft::distance(first, last) - 1;
+    resize(count);
+    while (count-- > 0) {
+      _alloc.destroy(_begin + count);
+      _alloc.construct(_begin + count, *(--last));
+    }
   }
 
   allocator_type get_allocator(void) const { return _alloc; }
@@ -104,47 +105,39 @@ public:
       throw(std::out_of_range("vector: Out of range access"));
     return *(_begin + pos);
   }
-  cst_reference at(size_type pos) const {
+  const_reference at(size_type pos) const {
     if (pos >= _size)
       throw(std::out_of_range("vector: Out of range access"));
     return *(_begin + pos);
   }
 
-  reference     operator[](size_type pos) { return _begin[pos]; }
-  cst_reference operator[](size_type pos) const { return _begin[pos]; }
+  reference       operator[](size_type pos) { return _begin[pos]; }
+  const_reference operator[](size_type pos) const { return _begin[pos]; }
 
-  reference     front(void) { return _begin[0]; }
-  cst_reference front(void) const { return _begin[0]; }
+  reference       front(void) { return _begin[0]; }
+  const_reference front(void) const { return _begin[0]; }
 
-  reference     back(void) { return _begin[_size - 1]; }
-  cst_reference back(void) const { return _begin[_size - 1]; }
+  reference       back(void) { return _begin[_size - 1]; }
+  const_reference back(void) const { return _begin[_size - 1]; }
 
-  pointer     data(void) { return _begin; }
-  cst_pointer data(void) const { return _begin; }
+  pointer       data(void) { return _begin; }
+  const_pointer data(void) const { return _begin; }
 
   // ITERATORS:
-  ra_iterator< T >       begin(void) { return ra_iterator< T >(_begin); }
-  ra_iterator< const T > begin(void) const {
-    return ra_iterator< const T >(_begin);
-  }
+  iterator       begin(void) { return iterator(_begin); }
+  const_iterator begin(void) const { return const_iterator(_begin); }
 
-  ra_iterator< T >       end(void) { return ra_iterator< T >(_begin + _size); }
-  ra_iterator< const T > end(void) const {
-    return ra_iterator< const T >(_begin + _size);
-  }
+  iterator       end(void) { return iterator(_begin + _size); }
+  const_iterator end(void) const { return const_iterator(_begin + _size); }
 
-  rev_iterator< iterator > rbegin(void) {
-    return rev_iterator< pointer >(end());
-  }
-  rev_iterator< cst_iterator > rbegin(void) const {
-    return rev_iterator< cst_pointer >(end());
+  reverse_iterator       rbegin(void) { return reverse_iterator(end()); }
+  const_reverse_iterator rbegin(void) const {
+    return const_reverse_iterator(end());
   }
 
-  rev_iterator< iterator > rend(void) {
-    return rev_iterator< pointer >(begin());
-  }
-  rev_iterator< cst_iterator > rend(void) const {
-    return rev_iterator< cst_pointer >(begin());
+  reverse_iterator       rend(void) { return reverse_iterator(begin()); }
+  const_reverse_iterator rend(void) const {
+    return const_reverse_iterator(begin());
   }
 
   // CAPACITY:
@@ -154,8 +147,8 @@ public:
   void      reserve(size_type new_cap) {
     if (new_cap > max_size())
       throw(std::length_error("vector::reserve: new_cap > max_size"));
-    Allocator new_alloc;
-    pointer   new_begin;
+    Alloc   new_alloc;
+    pointer new_begin;
     new_begin = new_alloc.allocate(new_cap);
     for (size_type i = 0; i < _size; i++)
       new_alloc.construct(new_begin + i, *(_begin + i));
@@ -173,7 +166,7 @@ public:
       _alloc.destroy(_begin + i);
     _size = 0;
   }
-  iterator insert(iterator pos, cst_reference value) {
+  iterator insert(iterator pos, const_reference value) {
     if (_size == _capacity)
       resize(_size + 1);
     iterator it = end() + 1;
@@ -183,7 +176,7 @@ public:
     *it = value;
     return _begin;
   }
-  iterator insert(iterator pos, size_type count, cst_reference value) {
+  iterator insert(iterator pos, size_type count, const_reference value) {
     if ((_size + count) > _capacity)
       resize(_size + count);
     iterator it = end() + count;
@@ -196,22 +189,20 @@ public:
     return _begin;
   }
   template < class It > iterator insert(iterator pos, It first, It last) {
-    size_type count = ft::distance(first, last);
+    size_type count = ft::distance(first, last) - 1;
     if ((_size + count) > _capacity)
       resize(_size + count);
-    iterator it = end() + count;
+    iterator it = end();
     while (--it >= (pos + count))
       *it = *(it - count);
     while (it >= pos) {
-      *it = *last;
-      it--;
-      last--;
+      *(--it) = *(--last);
     }
     return _begin;
   }
   iterator erase(iterator pos) {
     while (pos < end()) {
-      _alloc.destroy(pos);
+      _alloc.destroy(pos.base());
       *pos = *(pos + 1);
       pos++;
     }
@@ -220,35 +211,33 @@ public:
   }
   iterator erase(iterator first, iterator last) {
     while (last++ < end()) {
-      _alloc.destroy(first);
+      _alloc.destroy(first.base());
       *(first++) = *last;
     }
     while (first < end() && _size--) {
-      _alloc.destroy(first);
+      _alloc.destroy(first.base());
       *(first++) = value_type();
     }
     return _begin;
   }
-  void push_back(cst_reference value) {
+  void push_back(const_reference value) {
     if (_size == _capacity)
       resize(_size + 1);
-    _alloc.construct(back(), value);
+    _alloc.construct(_begin + _size - 1, value);
   }
   void pop_back(void) {
-    _alloc.destroy(back());
+    _alloc.destroy(_begin + _size - 1);
     _size--;
   }
   void resize(size_type count, T value = T()) {
-    size_type i = count;
     if (count < _size) {
-      while (i < _size && --_size)
-        _alloc.destroy(_begin + i);
+      while (count < --_size)
+        _alloc.destroy(_begin + _size);
     } else {
       if (count > _capacity)
         reserve(count);
-      while (i >= _size)
-        _alloc.construct(_begin + --i, value);
-      _size = count;
+      while (_size < count)
+        _alloc.construct(_begin + _size++, value);
     }
   }
   void swap(vector &other) {
@@ -257,7 +246,7 @@ public:
     this = tmp;
   }
   void print(void) {
-    ft::ra_iterator< T > i = begin();
+    ft::random_access_iterator< T > i = begin();
     while (i < end()) {
       std::cout << *i << " ";
       i++;
diff --git a/tester.cpp b/tester.cpp
index a1ad581..a848ce2 100644
--- a/tester.cpp
+++ b/tester.cpp
@@ -64,9 +64,6 @@ void test_vectors(void) {
   std::cout << "12.c) test5.size() | " << test5.size() << std::endl;
   std::cout << "12.d) test5.max_size() | " << test5.max_size() << std::endl;
   std::cout << "12.e) test5.capacity() | " << test5.capacity() << std::endl;
-
-
-  
 }
 
 int main(void) { test_vectors(); }