【C++/数据结构】顺序表的基本操作

<span style="font-size:18px;"><strong>#pragma once
#include <iostream>
using namespace std;

typedef enum { FALSE, TRUE }Status;

template<class Type>
class SeqList
{
public:
	SeqList(int sz = DefaultSize)
	{
		capacity = sz > DefaultSize ?
 sz : DefaultSize;
		base = new Type[capacity];
		size = 0;
	}
	~SeqList()
	{
		destroy();
		/*	delete []base;
		base = NULL;
		capacity = size = 0;*/
	}
public:
	Status Inc()
	{
		Type *newbase = new Type[capacity + INC_SIZE];
		if (newbase == NULL)
		{
			return FALSE;
		}
		memcpy(newbase, base, sizeof(Type)*size);
		delete[]base;
		base = newbase;
		capacity += INC_SIZE;
		return TRUE;
	}
	Status merge(SeqList<Type> <1, SeqList<Type> <2)
	{
		int i = 0;
		int j = 0;
		int k = 0;
		while (i < lt1.size && j < lt2.size)
		{
			if (lt1.base[i] > lt2.base[j])
			{
				base[k++] = lt2.base[j++];
			}
			else
			{
				base[k++] = lt1.base[i++];
			}
		}
		while(i < lt1.size)
		{
			base[k++] = lt1.base[i++];
		}
		while (j < lt2.size)
		{
			base[k++] = lt2.base[j++];
		}
		size = lt1.size + lt2.size;
		return TRUE;
	}
	Status IsFull() const
	{
		if (size >= capacity)
		{
			return TRUE;
		}
		else
		{
			return FALSE;
		}
	}
	Status Empty() const
	{
		if (size == 0)
		{
			return TRUE;
		}
		else
		{
			return FALSE;
		}
	}
	Status push_back(const Type& x)
	{
		if (IsFull() && !Inc())
		{
			cout << "IsFull!不能尾插" << x << endl;
			return FALSE;
		}
		base[size++] = x;
		return TRUE;
	}
	Status push_front(const Type& x)
	{
		if (IsFull() && !Inc())
		{
			cout << "IsFull!不能头插" << x << endl;
			return FALSE;
		}
		for (int i = size; i > 0; --i)
		{
			base[i] = base[i - 1];
		}
		base[0] = x;
		size++;
		return TRUE;
	}
	Status pop_back()
	{
		if (Empty())
		{
			cout << "Empty!不能尾删" << endl;
			return FALSE;
		}
		size--;
		return TRUE;
	}
	Status pop_front()
	{
		if (Empty())
		{
			cout << "Empty!不能头删" << endl;
			return FALSE;
		}
		for (int i = 0; i < size; ++i)
		{
			base[i] = base[i + 1];
		}
		size--;
		return TRUE;
	}
	Status insert_val(const Type& x)
	{
		if (IsFull() && !Inc())
		{
			cout << "IsFull!不能按值插入" << x << endl;
			return FALSE;
		}
		int i = 0;
		while (base[i] < x && i < size)
		{
			i++;
		}
		insert_pos(i, x);
		return TRUE;
	}
	Status insert_pos(int pos, const Type& x)
	{
		if (IsFull() && !Inc())
		{
			cout << "IsFull! 不能按位置插入" << endl;
			return FALSE;
		}
		if (pos < 0 || pos > size)
		{
			return FALSE;
		}
		for (int i = 0; i < size; ++i)
		{
			if (i == pos)
			{
				for (int j = size; j > i; --j)
				{
					base[j] = base[j - 1];
				}
			}
		}
		base[pos] = x;
		size++;
		return TRUE;
	}
	int find(const Type& x)
	{
		if (size == 0)
		{
			return -1;
		}
		for (int i = 0; i < size; ++i)
		{
			if (base[i] == x)
			{
				return i;
			}
		}
	}
	Status delete_pos(int pos)
	{
		if (pos < 0 || pos > size)
		{
			return FALSE;
		}
		for (int i = 0; i < size; ++i)
		{
			if (i == pos)
			{
				for (int j = i; j < size; ++j)
				{
					base[j] = base[j + 1];
				}
				break;
			}
		}
		size--;
		return TRUE;
	}
	Status delete_val(const Type& x)
	{
		int key = find(x);
		if (key == -1)
		{
			return FALSE;
		}
		delete_pos(key);
		return TRUE;
		/*if(Empty())
		{
		cout << "Empty!" << endl;
		return FALSE;
		}
		for(int i = 0; i < size; ++i)
		{
		if(base[i] == x)
		{
		for(int j = i; j < size; ++j)
		{
		base[j] = base[j+1];
		}
		break;
		}
		}
		size--;
		return TRUE;*/
	}
	void sort()
	{
		if (size == 0 || size == 1)
		{
			return;
		}
		for (int i = 0; i < size - 1; ++i)
		{
			for (int j = 0; j < size - i - 1; ++j)
			{
				if (base[j] > base[j + 1])
				{
					int tmp = base[j];
					base[j] = base[j + 1];
					base[j + 1] = tmp;
				}
			}
		}
	}
	void resver()
	{
		if (size == 0 || size == 1)
		{
			return;
		}
		for (int i = 0, j = size - 1; i < j; ++i, --j)
		{
			int tmp = base[i];
			base[i] = base[j];
			base[j] = tmp;
		}
	}
	int length()
	{
		return size;
	}
	void clear()
	{
		size = 0;
	}
	Status destroy()
	{
		if (base == NULL)
		{
			return FALSE;
		}
		delete[]base;
		base = NULL;
		size = capacity = 0;
		return TRUE;
	}
	Status modify_val(const Type& x, const Type& y)
	{
		int key = find(x);
		if (key == -1)
		{
			return FALSE;
		}
		modify_pos(key, y);
		return TRUE;
	}
	Status modify_pos(int pos, const Type& x)
	{
		if (pos < 0 || pos > size)
		{
			return FALSE;
		}
		for (int i = 0; i < size; ++i)
		{
			if (i == pos)
			{
				base[i] = x;
			}
		}
		return TRUE;
	}
	void show_list()
	{
		for (int i = 0; i < size; ++i)
		{
			cout << base[i] << ' ';
		}
		cout << endl;
	}
private:
	enum {DefaultSize = 20, INC_SIZE = 3};
	Type *base;
	int capacity;
	int size;
};</strong></span>

<span style="font-size:18px;"><strong>#include "SeqList.h"

void main()
{
	SeqList<int> It1;
	SeqList<int> It2;
	SeqList<int> mylist;

	int select = 1;
	int pos;
	int item;
	system("Color 0d");
	while (select)
	{
		cout << "************************************" << endl;
		cout << "* [0]  quit_system [1] push_back   *" << endl;
		cout << "* [2]  push_front  [3] show_list   *" << endl;
		cout << "* [4]  pop_back    [5] pop_front   *" << endl;
		cout << "* [6]  insert_val  [7] insert_pos  *" << endl;
		cout << "* [8]  find        [9] delete_pos  *" << endl;
		cout << "* [10] delete_val [11] sort        *" << endl;
		cout << "* [12] resver     [13] length      *" << endl;
		cout << "* [14] clear      [15] destroy     *" << endl;
		cout << "* [16] modify_val [17] modify_pos  *" << endl;
		cout << "* [18] merge                       *" << endl;
		cout << "************************************" << endl;
		cout << "请选择:>";
		cin >> select;
		switch (select)
		{
		case 1:
			cout << "请输入要插入的数据(-1结束):>";
			while (cin >> item, item != -1)
			{
				mylist.push_back(item);
			}
			break;
		case 2:
			cout << "请输入要插入的数据(-1结束):>";
			while (cin >> item, item != -1)
			{
				mylist.push_front(item);
			}
			break;
		case 3:
			system("cls");
			mylist.show_list();
			system("pause");
			break;
		case 4:
			mylist.pop_back();
			break;
		case 5:
			mylist.pop_front();
			break;
		case 6:
			cout << "请输入要插入的值:>";
			cin >> item;
			mylist.insert_val(item);
			break;
		case 7:
			cout << "请输入要插入的值的下标:>";
			cin >> pos;
			cout << "请输入要插入的值";
			cin >> item;
			mylist.insert_pos(pos, item);
			break;
		case 8:
			cout << "请输入要查找的值:>";
			cin >> item;
			cout << "该值下标为:" << mylist.find(item) << endl;
			break;
		case 9:
			cout << "请输入要删除的值的下标:>";
			cin >> item;
			mylist.delete_pos(item);
			break;
		case 10:
			cout << "请输入要删除的值:>";
			cin >> item;
			mylist.delete_val(item);
			break;
		case 11:
			mylist.sort();
			break;
		case 12:
			mylist.resver();
			break;
		case 13:
			cout << "线性表的长度为：" << mylist.length() << endl;
			break;
		case 14:
			mylist.clear();
			break;
		case 15:
			mylist.destroy();
			break;
		case 16:
			cout << "请输入要改动的值:>";
			cin >> item;
			cout << "请输入改动后的值:>";
			cin >> pos;
			mylist.modify_val(item, pos);
			break;
		case 17:
			cout << "请输入要改动的值的下标:>";
			cin >> pos;
			cout << "请输入改动后的值:>";
			cin >> item;
			mylist.modify_pos(pos, item);
			break;
		case 18:
			for (int i = 1; i < 10; i += 2)
			{
				It1.push_back(i);
			}
			for (int i = 2; i <= 10; i += 2)
			{
				It2.push_back(i);
			}
			mylist.merge(It1, It2);
			mylist.show_list();
		default:
			break;
		}
	}
}

	</strong></span>

执行结果例如以下：