共享栈，创建，打印，入栈，出栈——C语言描述

共享栈，创建，打印，入栈，出栈——C语言描述

1. 共享栈的顺序存储结构

一个数组里面有两个栈指针，一个在数组下标为0（Top = -1时栈1为空栈），一个在数组尾（Top = MAXSIZE栈2为空栈）。当Top1 + 1 = Top2时，该共享栈为满栈。

代码：

#define SUCCESS			1
#define ERROR			0
#define MAXSIZE			5

typedef int ElemType;
typedef int LIST_STATUS;
typedef struct _SQ_DOUBLE_STACK {
	ElemType Data[MAXSIZE];
	int Top1;
	int Top2;
}SQ_DOUBLE_STACK;

2 操作共享栈

创建，打印，入栈，出栈。

代码：

void OperateSQDoubleStack(void) {
	LIST_STATUS Status;
	SQ_DOUBLE_STACK  *SqDbStack = (SQ_DOUBLE_STACK *)malloc(sizeof(SQ_DOUBLE_STACK));
	int CreateNum = 4;

	Status = CreateSQDoubleStack(SqDbStack, CreateNum);
	if (SUCCESS == Status) {
		printf("CreateSQDoubleStack succeed!\n");
	}
	else {
		printf("CreateSQDoubleStack failed!\n");
	}

	PrintSQDoubleStack(SqDbStack);
}

3 创建共享栈

创建一个共享栈，两边栈的有个元素。

代码：

/*SQ_DOUBLE_STACK*/
LIST_STATUS CreateSQDoubleStack(SQ_DOUBLE_STACK *SqDbStack, int CreateNum) {
	SQ_DOUBLE_STACK *TraDbStack;
	int TraIndex;

	printf("CreateSQDoubleStack start\n");

	if (NULL == SqDbStack || CreateNum > MAXSIZE) {
		return ERROR;	
	}

	for (TraIndex = 0; TraIndex < MAXSIZE; ++TraIndex) {
		if (TraIndex <=1 || TraIndex > 2) {
			SqDbStack->Data[TraIndex] = TraIndex;
		}
	}

	SqDbStack->Top1 = 1;
	SqDbStack->Top2 = 3;

	printf("CreateSQDoubleStack start\n");
	return SUCCESS;
}

结果：

CreateSQDoubleStack start

CreateSQDoubleStack start

CreateSQDoubleStack succeed!

PrintSQDoubleStack start

TraDbStack->Top1 = 1

TraDbStack->Top2 = 3

PrintSQDoubleStack->Data[TraIndex] = 0

PrintSQDoubleStack->Data[TraIndex] = 1

PrintSQDoubleStack->Data[TraIndex] = -842150451

PrintSQDoubleStack->Data[TraIndex] = 3

PrintSQDoubleStack->Data[TraIndex] = 4

PrintSQDoubleStack end

4 打印共享栈

代码：

void PrintSQDoubleStack(SQ_DOUBLE_STACK * const SqDbStack) {
	SQ_DOUBLE_STACK *TraDbStack = SqDbStack;
	int TraIndex;

	printf("PrintSQDoubleStack start\n");

	printf("TraDbStack->Top1 = %d\n", TraDbStack->Top1);
	printf("TraDbStack->Top2 = %d\n", TraDbStack->Top2);
	for (TraIndex = 0; TraIndex < MAXSIZE; ++TraIndex) {
		printf("PrintSQDoubleStack->Data[TraIndex] = %d\n", TraDbStack->Data[TraIndex]);
	}

	printf("PrintSQDoubleStack end\n\n");
}

5 共享栈——入栈

LIST_STATUS PushSQDoubleStack(SQ_DOUBLE_STACK *SqDbStack, int PushData, int StackNum)

通过StackNum编号来判断要入栈的编号。

代码：

LIST_STATUS PushSQDoubleStack(SQ_DOUBLE_STACK *SqDbStack, int PushData, int PushStackNum) {
	printf("PushSQDoubleStack start\n");

	if (NULL == SqDbStack || SqDbStack->Top1 + 1 == SqDbStack->Top2) {
		return ERROR;	
	}

	if (1 == PushStackNum) {
		SqDbStack->Data[++SqDbStack->Top1] = PushData;
	
	} else if (2 == PushStackNum) {
		SqDbStack->Data[--SqDbStack->Top2] = PushData;
	}

	printf("PushSQDoubleStack end\n");
	return SUCCESS;
}

结果：

CreateSQDoubleStack start

CreateSQDoubleStack start

CreateSQDoubleStack succeed!

PrintSQDoubleStack start

TraDbStack->Top1 = 1

TraDbStack->Top2 = 3

PrintSQDoubleStack->Data[TraIndex] = 0

PrintSQDoubleStack->Data[TraIndex] = 1

PrintSQDoubleStack->Data[TraIndex] = -842150451

PrintSQDoubleStack->Data[TraIndex] = 3

PrintSQDoubleStack->Data[TraIndex] = 4

PrintSQDoubleStack end

PushSQDoubleStack start

PushSQDoubleStack end

CreateSQDoubleStack succeed!

PrintSQDoubleStack start

TraDbStack->Top1 = 2

TraDbStack->Top2 = 3

PrintSQDoubleStack->Data[TraIndex] = 0

PrintSQDoubleStack->Data[TraIndex] = 1

PrintSQDoubleStack->Data[TraIndex] = 10

PrintSQDoubleStack->Data[TraIndex] = 3

PrintSQDoubleStack->Data[TraIndex] = 4

PrintSQDoubleStack end

6 共享栈——出栈

LIST_STATUS PopSQDoubleStack(SQ_DOUBLE_STACK *SqDbStack, int *PopData, int PopStackNum)

通过PopStackNum编号来判断要出栈的编号

代码：

LIST_STATUS PopSQDoubleStack(SQ_DOUBLE_STACK *SqDbStack, int *PopData, int PopStackNum) {
	printf("PopSQDoubleStack start\n");

	if (NULL == SqDbStack) {
		return ERROR;
	}

	if (1 == PopStackNum) {
		if (SqDbStack->Top1 == -1) {
			return ERROR;
		} else {
			*PopData = SqDbStack->Data[SqDbStack->Top1--];
		}
	}
	else if (2 == PopStackNum) {
		if (SqDbStack->Top2 == MAXSIZE) {
			return ERROR;
		} else {
			*PopData = SqDbStack->Data[SqDbStack->Top2++];
		}
	}

	printf("PopSQDoubleStack end\n");
	return SUCCESS;
}

结果：

CreateSQDoubleStack start

CreateSQDoubleStack start

CreateSQDoubleStack succeed!

PrintSQDoubleStack start

TraDbStack->Top1 = 1

TraDbStack->Top2 = 3

PrintSQDoubleStack->Data[TraIndex] = 0

PrintSQDoubleStack->Data[TraIndex] = 1

PrintSQDoubleStack->Data[TraIndex] = -842150451

PrintSQDoubleStack->Data[TraIndex] = 3

PrintSQDoubleStack->Data[TraIndex] = 4

PrintSQDoubleStack end

PopSQDoubleStack start

PopSQDoubleStack end

PopSQDoubleStack succeed!

*PopData = 1

PrintSQDoubleStack start

TraDbStack->Top1 = 0

TraDbStack->Top2 = 3

PrintSQDoubleStack->Data[TraIndex] = 0

PrintSQDoubleStack->Data[TraIndex] = 1

PrintSQDoubleStack->Data[TraIndex] = -842150451

PrintSQDoubleStack->Data[TraIndex] = 3

PrintSQDoubleStack->Data[TraIndex] = 4

PrintSQDoubleStack end