hdu1870（愚人节的礼物）--- 简单栈类

Problem Description

Input

Output

Sample Input

((((B)()))())
(B)

Sample Output

4
1

package stack;

import java.util.Scanner;

public class P1870 {

	public static void main(String[] args) {
		Scanner sc=new Scanner(System.in);
		while(sc.hasNext()){
			String s=sc.nextLine();
			Stack stack=new Stack(s.length());
			char[] ch=s.toCharArray();
			for(int i=0;i<ch.length;i++){
				if(ch[i]=='('){
					stack.inStack(ch[i]);
				}else if(ch[i]==')'){
					stack.outStack();
				}else{
					break;
				}
			}
			System.out.println(stack.getTop());
		}
	}
}
class Stack{
	int top=0;
	int maxLen;
	char[] stack;
	public Stack(int maxLen){
		this.maxLen=maxLen;
		stack=new char[this.maxLen];
	}
	public void inStack(char ch){
		stack[top++]=ch;
	}
	public void outStack(){
		top--;
	}
	public int getTop(){
		return top;
	}
}

hdu1870（愚人节的礼物）--- 简单栈类

原文：http://blog.csdn.net/u011479875/article/details/47382853