[数据结构]有序表的合并 原创

/*
 * @Author: 
 * @Date: 2019-12-03 20:18:46
 * @Last Modified by: 
 * @Last Modified time: 2019-12-03 20:44:28
 */

#include <iostream>
#include <cstdio>
using namespace std;

#define MAXSIZE 100

typedef int Status;
typedef int Elem;

typedef struct
{
	/* data */
	Elem *date;
	int len;
} SqList;

//初始化
Status InitList(SqList &L)
{
	L.date = new Elem[MAXSIZE];
	L.len = 0;
	if (L.date)
		return -1;
	return 1;
}

//插入
Status InsertList(SqList &L, int i, Elem e)
{
	if (i < 1 || i > L.len + 1)
		return -1;
	if (L.len == MAXSIZE)
		return -1;
	for (int j = L.len; j >= i - 1; j--)
		L.date[j + 1] = L.date[j];
	L.date[i - 1] = e;
	++L.len;
	return 1;
}

Status MergeList_Sq(SqList LA, SqList LB, SqList &LC)
{
	LC.len = LA.len + LB.len;
	LC.date = new Elem[LC.len];

	Elem *pa, *pb, *pc;
	Elem *pa_last, *pb_last;
	pc = LC.date, pa = LA.date, pb = LB.date;
	pa_last = LA.date + LA.len - 1;
	pb_last = LB.date + LB.len - 1;

	//逻辑上好理解 LA LB 一起找 小的就塞到LC 如果都其中一个空了 另一个就全塞进去

	while (pa <= pa_last && pb <= pb_last)
	{
		if (*pa <= *pb) *pc++ = *pa++;
		else *pc++ = *pb++;
	}
	while (pa <= pa_last) *pc++ = *pa++;
	while (pb <= pb_last) *pc++ = *pb++;

	return 1;
}

int main()
{
	SqList LA, LB, LC;
	InitList(LA);
	InitList(LB);
	InitList(LC);
	int num_A, num_B;
	cin >> num_A;
	cin >> num_B;

	for (int i = 1; i <= num_A; i++)
	{
		Elem OBJ;
		cin >> OBJ;
		//1
		InsertList(LA, i, OBJ);
	}

	for (int i = 1; i <= num_B; i++)
	{
		Elem OBJ_B;
		cin >> OBJ_B;
		InsertList(LB, i, OBJ_B);
	}

	//1
	MergeList_Sq(LA, LB, LC);

	for (int i = 0; i < LC.len; i++)
		cout << LC.date[i];

}