Problem : 1022 ( Train Problem I )

做题思路必须很清晰啊....可以用数组存储in或out来着，第一次C++用string啊，效果还行

Problem : 1022 ( Train Problem I )     Judge Status : Accepted
RunId : 10418893    Language : C++    Author : mnmlist
Code Render Status : Rendered By HDOJ C++ Code Render Version 0.01 Beta
#include<iostream>
#include<string>
#include<stack>
using namespace std;
string isRight(int x,int *a,int *b);
int main()
{
    int x,y,z;
    int a[10],b[10];

    while(cin>>x>>y>>z)
    {
        string str="";
        for(int l=x;l>0;l--)
        {
            a[l]=y%10;y/=10;
            b[l]=z%10;z/=10;
        }
        str=isRight(x,a,b);
        cout<<str;

    }
    return 0;
}
string isRight(int x,int *a,int *b)
{
    string str="";
    stack<int>st;
    int i=1,j=1;
    while(i<2*x)
    {
        if(i<=x)
        {
            st.push(a[i]);
            str+="in\n";
        }
        while(j<=x&&!st.empty()&&st.top()==b[j])
        {
            st.pop();
            str+="out\n";
            j++;
        }
        i++;
    }
    if(st.empty())
        str="Yes.\n"+str;
    else
        str="No.\n";
    str+="FINISH\n";
    return str;
}