UVA - 231 - Testing the CATCHER

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Vector;

public class Main {

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringBuilder sb = new StringBuilder();
        int i=1;
        while(true){
            int n=Integer.parseInt(br.readLine());
            if(n<0)
                break;
            if(i>1)
                sb.append("\n");
            Vector<Integer> vec=new Vector<Integer>();
            vec.add(n);
            while(true){
                n=Integer.parseInt(br.readLine());
                if(n<0)
                    break;
                vec.add(n);
            }
            sb.append("Test #").append(i).append(":\n");
            sb.append("  maximum possible interceptions: ").append(LDS(vec)).append("\n");
            i++;
        }
        System.out.print(sb);
    }

    static int LDS(Vector<Integer> vec){
        int[]arr=new int[vec.size()];
        arr[0]=1;
        int maxL=0;
        for(int i=1;i<arr.length;i++){
          int maX=0;
          for(int j=0;j<i;j++){
            if(vec.get(j)>vec.get(i) &&arr[j]>maX){
              maX=arr[j];
            }
          }
          arr[i]=maX+1;
          if(arr[i]>maxL){
              maxL=arr[i];
          }
        }
        return maxL;
    }
}