数据结构3.2栈---括号匹配

• 1. 介绍
• 2.代码部分，判断括号是否匹配
• 3.测试
• 4.全部代码
• 5.测试结果

3.2栈的应用—括号匹配 现在，有一行括号序列，里面只包含()[]{}六种符号，请你检查这行括号是否配对。如：
[]是匹配的
([])[]是匹配的
((]是不匹配的
([)]是不匹配的

bool bracketMatching(char* paraString, int paraLength)
{
	//1.初始化一个栈，把'#'压入栈
	CharStackPtr tempStack = charStackInit();
	push(tempStack, '#');
	char tempChar, tempPopedChar;
	//2.判断符号
	for (int i = 0; i < paraLength; i++)
	{
		tempChar = paraString[i];
		switch (tempChar)
		{
		case '(':
		case '[':
		case '{':
			push(tempStack, tempChar);
			break;
		case ')':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '(')
			{
				tempPopedChar = pop(tempStack);
				return false;
			}
			break;
		case ']':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '[') {
				return false;
			}
			break;
		case '}':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '{') {
				return false;
			}
			break;
		defalut:
			break;
		}
	}
	tempPopedChar = pop(tempStack);
	if (tempPopedChar != '#') {
		return false;
	}
	return true;
}

void bracketMatchingTest() {
	char tempExpression[18] = "[2 + (1 - 3)] * 4";
	bool tempMatch = bracketMatching(tempExpression, 18);//括号匹配则tempMatch值为一,否则为0
	printf("Is the expression '%s' bracket matching? %d rn", tempExpression, tempMatch);
	char tempExpressiontwo[7] = "()(}{{";
	bool tempMatchtwo = bracketMatching(tempExpressiontwo, 7);//括号匹配则tempMatchtwo值为一,否则为0
	printf("Is the expression '%s' bracket matching? %d rn", tempExpressiontwo, tempMatchtwo);
}

#include
#include
#define STACK_MAX_SIZE 10
//创建结构体

typedef struct CharStack {
	int top;
	int data[STACK_MAX_SIZE];
}*CharStackPtr;
//输出栈
void outputStack(CharStackPtr paraStack) {
	for (int i = 0; i <= paraStack->top; i++)
	{
		printf("%c", paraStack->data[i]);
	}
	printf("rn");
}
//初始化栈
CharStackPtr charStackInit()
{
	CharStackPtr resultPtr = (CharStackPtr)malloc(sizeof(CharStack));
	resultPtr->top = -1;
	return resultPtr;
}
//在栈里添加元素
void push(CharStackPtr paraStackPtr, int paraValue)
{
	//检测栈的空间
	if (paraStackPtr->top >= STACK_MAX_SIZE - 1)
	{
		printf("空间已满，无法添加rn");
		return;
	}
	//更新top
	paraStackPtr->top++;
	//添加元素
	paraStackPtr->data[paraStackPtr->top] = paraValue;
}
//弹出元素,并返回被弹出的元素
char pop(CharStackPtr paraStackPtr)
{
	//空间检查
	if (paraStackPtr->top < 0)
	{
		printf("栈是空的，无法弹出");
		return '';
	}
	//更新top
	paraStackPtr->top--;
	//返回被弹出的值
	return paraStackPtr->data[paraStackPtr->top + 1];
}
//添加，弹出测试
void pushPopTest() {
	printf("---- pushPopTest begins. ----rn");

	// Initialize.
	CharStackPtr tempStack = charStackInit();
	printf("After initialization, the stack is: ");
	outputStack(tempStack);

	// Pop.
	for (char ch = 'a'; ch < 'm'; ch++) {
		printf("Pushing %c.rn", ch);
		push(tempStack, ch);
		outputStack(tempStack);
	}//Of for i

	// Pop.
	for (int i = 0; i < 3; i++) {
		char ch = pop(tempStack);
		printf("Pop %c.rn", ch);
		outputStack(tempStack);
	}//Of for i

	printf("---- pushPopTest ends. ----rn");
}
bool bracketMatching(char* paraString, int paraLength)
{
	//1.初始化一个栈，把'#'压入栈
	CharStackPtr tempStack = charStackInit();
	push(tempStack, '#');
	char tempChar, tempPopedChar;
	//2.判断符号
	for (int i = 0; i < paraLength; i++)
	{
		tempChar = paraString[i];
		switch (tempChar)
		{
		case '(':
		case '[':
		case '{':
			push(tempStack, tempChar);
			break;
		case ')':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '(')
			{
				tempPopedChar = pop(tempStack);
				return false;
			}
			break;
		case ']':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '[') {
				return false;
			}
			break;
		case '}':
			tempPopedChar = pop(tempStack);
			if (tempPopedChar != '{') {
				return false;
			}
			break;
		defalut:
			break;
		}
	}
	tempPopedChar = pop(tempStack);
	if (tempPopedChar != '#') {
		return false;
	}
	return true;
}
//测试
void bracketMatchingTest() {
	char tempExpression[18] = "[2 + (1 - 3)] * 4";
	bool tempMatch = bracketMatching(tempExpression, 18);//括号匹配则tempMatch值为一,否则为0
	printf("Is the expression '%s' bracket matching? %d rn", tempExpression, tempMatch);
	char tempExpressiontwo[7] = "()(}{{";
	bool tempMatchtwo = bracketMatching(tempExpressiontwo, 7);//括号匹配则tempMatchtwo值为一,否则为0
	printf("Is the expression '%s' bracket matching? %d rn", tempExpressiontwo, tempMatchtwo);
}
void main() {
	// pushPopTest();
	bracketMatchingTest();
}

Is the expression '[2 + (1 - 3)] * 4' bracket matching? 1
Is the expression '()(}{{' bracket matching? 0