main.cpp

#include <stdio.h>
#include <stdlib.h>
#include "BTree.h"
#include "BPlusTree.h"
#include "Context.h"

int main()
{
	
	/*************************************直接调用B  B+ 的调度使用****************************************/
	/************************************* Direct call B + B method ****************************************/
	BTree bt;
	BPlusTree bpt;
	
    int arr[] = {18, 31, 12, 10, 15, 48, 45, 47, 50, 52, 23, 30, 20};
    for(int i = 0; i < sizeof(arr) / sizeof(int); i++) {
        bt.insert(arr[i]);
		bpt.insert(arr[i]);
    }
    printf("no delete data:\n");
    printf("display about B-Tree:\n");
	bt.level_display();
	bt.inorder_print();
	printf("\n\n");
	
 	printf("display about B+ Tree:\n");
	bt.level_display();
	bt.inorder_print();
	printf("\n");
	bpt.linear_print();
	printf("\n");
	bt.NodeNum_print();
	bpt.NodeNum_print();
	printf("delete data...\n");
	int todel[] = {15, 18, 23, 30, 31, 52, 50};
		
	for(int i = 0; i < sizeof(todel) / sizeof(int); i++) {
		printf("after delete %d\n", todel[i]);
		bt.del(todel[i]);
		bpt.del(todel[i]);
	} 

	bt.NodeNum_print();
	bpt.NodeNum_print();
	
 	printf("\n\ndelete after data:\n");
    printf("display about B-Tree:\n");
	bt.level_display();
	bt.inorder_print();
	printf("\n\n");
	
 	printf("display about B+ Tree:\n");
	bpt.level_display();
	bpt.inorder_print();
	printf("\n");
	bpt.linear_print();
	printf("\n");
	
	/***************************************************************************************************/
	/***************************************************************************************************/
	/************************************* 用策略方法的调用B    ****************************************/
	/************************************* strategy pattern method ****************************************/
	
	printf("strategy method start\n");
	
	//“具体策略类”只在定义多个“调度类”时使用
    Context *Context_A=new Context(new BTree()),
            *Context_B=new Context(new BPlusTree());
	
    //调用方法，只通过“调度类”实现，算法之间的差异已被屏蔽
    int arrnum[] = {10, 2, 3, 4, 5, 9, 8, 7, 6,1};
    for(int i = 0; i < sizeof(arrnum) / sizeof(int); i++) {
        Context_A->Insert(arrnum[i]);
		Context_B->Insert(arrnum[i]);
    }
    Context_A->Inorder_Print();
    printf("\n\n");
	Context_B->LevelDisplay();
	
	/***************************************************************************************************/
	/***************************************************************************************************/
    return 0;
}