Chia sẻ bài tập OOP2 của nhóm Chiến+KimAnh

package exerciseone;
/**
 * Excercise One (OOP2);
 * Group :  NGUYEN VAN CHIEN - NGUYEN THI KIM ANH
 * Class :  K52A3
 * Date  :  12/09/2009
 */
import java.io.*;
import java.lang.*;

public class StringTester
{
    public static int Max (int a[],int n)
    {
        int t=a[0];
        int i,y=0;
        for (i=1;i<n;i++)
            if (t<=a[i]) { t=a[i];y=i;}
        return y;
    }

    public static int CheckFirstname (String a[],int n,String b[])
    {
        int i,j=0,counter=0;
        while (j<n-1)
        {
            for (i=j;i<n-1;i++)
            if (a[i].equalsIgnoreCase(a[++j]))
            {
                System.out.println((++counter)+" : \""+b[i]+"\" AND \""+b[j]+"\"");
            }
        }
        return counter;
    }

    public static void main(String args[]) throws java.io.IOException
    {
        String Firstname[]  =new    String[10];
        String Lastname[]  =new    String[10];
        String ch[]        =new    String[10];
        int Birth[]        =new    int[10];
        int i,j,n;
        int maxindex;
        int Check;

        BufferedReader inputObj=new BufferedReader(new InputStreamReader(System.in));

        System.out.println("Enter the Number Of Students (An Integer): ");
        n=Integer.valueOf(inputObj.readLine()).intValue();

        System.out.println("Enter Information (Fullname-Birthday) (Ex : nguyen van a-23/09/1988): ");
        for (i=0;i<n;i++)
        {
            System.out.println("Student " +i+ " : ");
            ch[i]=inputObj.readLine();
            String[] GetInfo=ch[i].split("-");

            String Fullname=GetInfo[0].trim();
            String Birthday=GetInfo[1].trim();

            String[] SplitFullname=Fullname.split(" ");
            String[] SplitBirthday=Birthday.split("/");

            int k=SplitFullname.length;
            Firstname[i]=SplitFullname[0].trim();
            Lastname[i] =SplitFullname[k-1].trim();

            String tmp=SplitBirthday[2]+SplitBirthday[1]+SplitBirthday[0];
            Birth[i]=Integer.parseInt(tmp);
        }

        System.out.println("----------------Section A-----------------");
        System.out.println("Name of " +n+ " Student is : ");
        for (i=0;i<n;i++)
            System.out.println("Student "+i+" is "+Lastname[i]);

        System.out.println("----------------Section B-----------------");
        System.out.println("Boths of the Students have Firstnames in the same : ");
        Check=CheckFirstname(Firstname,n,ch);
        if (Check==0)
            System.out.println("List is Empty !");

        System.out.println("----------------Section C-----------------");
        maxindex=Max(Birth,n);
        System.out.println("The youngest student is "+ch[maxindex]);

       

    }

}