本文主要给大家介绍了关于C++实现顺序表和单链表的相关内容,分享出来供大家参考学习,话不多说,来一起看看详细的介绍:
一、顺序表示例代码:
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#include <assert.h> #include <iostream> using namespace std; typedef int Datatype; class SeqList { public : SeqList() :_array(NULL) ,_size(0) ,_capacity(0) { } SeqList( const SeqList& s) { _array = (Datatype*) malloc (s._size*( sizeof (Datatype))); memcpy (_array, s._array, s._size*( sizeof (Datatype))); _size = _capacity = s._size; } SeqList& operator=(SeqList& s) { free (_array); Swap(s); return * this ; } void Swap(SeqList& s) { _array = s._array; _size = s._size; _capacity = s._capacity; } ~SeqList() { if (_array) { free (_array); _array = NULL; _size = _capacity = 0; } } void Print() { for ( size_t i = 0; i < _size; i++) { cout << _array[i] << " " ; } cout << endl; } void CheckCapcacity() { if (_size == _capacity) { _capacity = 2 * _capacity + 3; _array = (Datatype*) realloc (_array, _capacity* sizeof (Datatype)); assert (_array); } } //后插 void PushBack(Datatype x) { Insert(_size, x); } //前插 void PushFront(Datatype x) { Insert(0, x); } //删除最后一个 void PopBack() { Erase(_size); } //删除第一个 void PopFront() { Erase(0); } //[]运算符重载 Datatype& operator[]( size_t pos) { assert (pos < _size); return _array[pos]; } //pos位置前插入x void Insert( size_t pos, Datatype x) { assert (pos <= _size); CheckCapcacity(); int end = ( int )_size - 1; if (pos == 0) { while (end >= 0) { _array[end + 1] = _array[end]; end--; } _array[0] = x; } else { while (end >= ( int )pos) { _array[end + 1] = _array[end]; end--; } _array[pos] = x; } _size++; } //删除pos位置的元素 void Erase( size_t pos) { assert (pos < _size); //popfront的实现 if (_size > 0) { if (pos == 0) { int end = 0; while (end < ( int )_size - 1) { _array[end] = _array[end + 1]; end++; } _size--; } //popback的实现 else if (pos == _size) { _size--; } //erase else { int end = pos; while (end < ( int )_size - 1) { _array[end] = _array[end + 1]; end++; } _size--; } } return ; } private : Datatype* _array; size_t _size; size_t _capacity; }; |
二、单链表(不含头结点)示例代码
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#include <iostream> #include <assert.h> using namespace std; typedef int DataType; struct SListNode { SListNode* _next; DataType _data; SListNode(DataType x) :_data(x) , _next(NULL) {} }; typedef SListNode Node; class SList { public : SList() :_head(NULL) , _tail(NULL) {} SList( const SList& s) :_head(NULL) ,_tail(NULL) { Copy(s); } SList& operator=( const SList& s) { Destroy(); Copy(s); return * this ; } ~SList() { Destroy(); } void Copy( const SList& s) { Node* cur = s._head; while (cur) { PushBack(cur->_data); cur = cur->_next; } } void Destroy() { Node* cur = _head; while (_head != NULL) { cur = _head; _head = cur->_next; delete cur; } _head = _tail = NULL; } void PushBack(DataType x) { if ((_head == NULL)&&(_tail == NULL)) { _head = _tail = new Node(x); } else { _tail->_next = new Node(x); _tail = _tail->_next; } } void PopBack() { if (_head == NULL) { return ; } else if (_head ->_next == NULL) { delete _head; _head = _tail = NULL; } else { Node* tmp = _head; while (tmp->_next->_next != NULL) { tmp = tmp->_next; } _tail = tmp; tmp->_next = NULL; } } void PushFront(DataType x) { if ((_head == NULL) && (_tail == NULL)) { _head = _tail = new Node(x); } else { Node* tmp = new Node(x); tmp->_next = _head; _head = tmp; } } void PopFront() { if (_head == NULL) { return ; } Node* cur = _head; _head = _head->_next; delete cur; } Node* Find(DataType x) { Node* tmp = _head; while (tmp) { if (tmp->_data == x) return tmp; tmp = tmp->_next; } return NULL; } // 插入一个节点在pos的前面 void Insert(Node* pos, DataType x) { assert (pos); if (pos == 0) { PushFront(x); } else { Node* cur = _head; while (cur->_next != pos) { cur = cur->_next; } Node* tmp = new Node(x); tmp->_next = pos; cur->_next = tmp; } } void Erase(Node* pos) { assert (pos); if (pos == 0) { PopFront(); } else if (pos->_next == NULL) { PopBack(); } else { Node* cur = _head; while (cur->_next != pos) { cur = cur->_next; } Node* tmp = cur->_next; cur->_next = tmp->_next; delete tmp; } } void Print() { Node* tmp = _head; while (tmp != NULL) { cout <<tmp->_data << "->" ; tmp= tmp->_next; } cout << "NULL" <<endl; } private : Node* _head; Node* _tail; }; |
总结
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原文链接:http://blog.csdn.net/sssssuuuuu666/article/details/75400679