# Array to Vector

Discussion in 'Java' started by dsptl, Jun 14, 2009.

1. ### dsptlNew Member

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Our assignment to write megaMillion.java I have written this program but that is using array and our professor require us to use vector, which i don't know how to use. So can you guys please help me.

Code:
```

import java.util.*;

public class megaMillion
{
public static void main(String []args)
{int [][] group1=new int [5][5];
int[] group2=new int[5];
int i,cards,j;
String yorn;
char c;
Scanner in=new Scanner(System.in);
do
{Random number = new Random();
do{
System.out.print("how many cards do you mant to play? at most 5: ");
cards=in.nextInt();
}while(cards<1||cards>5);
for(i=0;i<cards;i++)
{group2[i]=number.nextInt(46) +1;;
for(j=0;j<5;j++)
GenWinNums(group1,i,5,56,number);
}

for(i=0;i<cards;i++)
{System.out.print("Ticket "+(i+1)+":\t");
for(j=0;j<5;j++)
System.out.print(group1[i][j]+"\t");
System.out.println("::\t"+group2[i]);
}
System.out.print("\nplay again (y/n) ");
yorn=in.next();
c=yorn.charAt(0);
}while(c=='Y'||c=='y');
}

public static boolean NoDuplicates(int a[][],int card,int n)
{int i;
boolean dup=false;
if(n==0)
return false;
for(i=0;i<=n-1;i++)
if(a[card][n]==a[card][i])
dup=true;
return dup;
}

public static void GenWinNums(int a[][],int card,int n,int max, Random number)
{int i;
boolean dup=true;
for(i=0;i<n;i++)
{while(dup)
{
a[card][i]=number.nextInt(max) +1;
dup=NoDuplicates(a,card,i);
}
dup=true;
}
sort(a,card,n);
}
public static void sort(int a[][],int card,int n)
{int i,j,t;
for(i=0;i<n-1;i++)
for(j=i+1;j<n;j++)
if(a[card][i]>a[card][j])
{t=a[card][i];
a[card][i]=a[card][j];
a[card][j]=t;
}
return;
}}

```