数据结构_栈在括号匹配中的应用_代码

学习笔记 

#include<stdio.h>
#include<stdlib.h>
#include<string.h>
 
#define MaxSize 10
typedef struct{
	char data[MaxSize];
	int top;
}SqStack;
 
//初始化栈
void InitStack(SqStack &S){
	S.top = 0;
} 
 
//判断栈是否为空
bool StackEmpty(SqStack S){
	if (S.top == 0) return true;
	return false;
} 
 
//新元素入栈
bool Push(SqStack &S,char x){
	if (S.top > MaxSize) return false;
	S.data[S.top] = x;
	printf("此时入栈的为: %c\n",x); 
	S.top++;
	return true;
} 
 
//栈顶元素出栈
bool Pop(SqStack &S,char &x) {
	if (S.top == 0) return false;
	x = S.data[S.top-1];
	printf("此时出栈的为: %c\n",x); 
	S.top--;
	return true;
}
 
bool bracketCheck(char str[],int length){
	SqStack S;
	InitStack(S);
	for(int i=0;i<length;i++){
		if(str[i] == '(' || str[i] == '[' || str[i] == '{'){
			Push(S,str[i]);
		}else{
			if(StackEmpty(S)) return false;
			
			char topelem;
			Pop(S,topelem);
			if(str[i] == ')' && topelem != '(') 
			{
				printf("匹配失败！\n");
				return false;
			}
			if(str[i] == ']' && topelem != '[') 
			{
				printf("匹配失败！\n");
				return false;
			}
			if(str[i] == '}' && topelem != '{') 
			{
				printf("匹配失败！\n");
				return false;
			}
			printf("这一对括号为：%c %c\n",topelem,str[i]);
		}
	}
	return StackEmpty;
}
 
int main(){
	char str[] = "{[([])]}";
	int length = strlen(str);
	bracketCheck(str,length);
	return 0;
}