Poj Solution 1576

http://poj.org/problem?id=1576

/* @author:����acmilan_fan@yahoo.cn */
import java.io.BufferedReader;
import java.io.InputStreamReader;

public class Main {
 public static void main(String[] args) throws Exception{
   BufferedReader br = new BufferedReader(new
               InputStreamReader(System.in));
   String s,board;
   String[] ss;
   int n;
   int[] p;
   boolean flag=false;
   while((s=br.readLine())!=null&&!s.startsWith("0")){
    ss=s.split(" ",3);
    p=new int[parseInt(ss[0])];
    for(int i=0;i< p.length;i++)
         p[i]=-1;
    n=parseInt(ss[2]);
    board=br.readLine();
    for(int i=0;i< n;i++){
      s=br.readLine();
      if(flag)continue;
      if(win(p,board,s,i)){
        flag=true;
        System.out.println("Player "+(i%p.length+1)+" won after "+(i+1)+" cards.");
      }
    }
    if(flag){
      flag=false;
    }else{
      System.out.println("No player won after "+n+" cards.");
       }
    }
    br.close();
   }


 static int parseInt(String s){
   int t = 0;
   for(char ch: s.toCharArray()){
      t *= 10;
      t += ch-'0';
   }
   return t;
 }

 static boolean win(int[] p,String board,String instruction,int n){
        
   int pos=n%p.length;
   char target=instruction.charAt(0);
   try {
    for(int i=0;i< instruction.length();i++){
     do{
           p[pos]++;
      }while(board.charAt(p[pos])!=target);
      } 
   }catch(StringIndexOutOfBoundsException e) {
    return true;
   }
   return p[pos]==board.length()-1;
  }
}