Write a java proram to find largest and second largest element in an Array.

Write a java proram to find second largest element in an Array.

Or
Write a java proram to find largest and second largest element in an Array.

Program:
import java.util.*;
public class second_largest
{
public static void main (String args[])
{
int n,i,j;
Scanner sc=new Scanner(System.in);

System.out.println("Enter the  size  of an array: ");
n=sc.nextInt();

int a[]=new int[n];
System.out.println("Enter the  elements of an array: ");
for(i=0; i<n; i++)
{
a[i]=sc.nextInt();
}

for ( i = 0; i < n; i++)
{
for ( j = 0; j < n; j++)
{
   if (a[i] < a[j])
   { int temp = a[i];
   a[i] = a[j];
   a[j] = temp;
   }
}
}
System.out.println("Second Largest element is:"+a[n-2]);
System.out.println("Largest element is:"+a[n-1]);
}
}

Output:
Enter the  size  of an array:
6
Enter the  elements of an array:
10
5
6
7
8
12
Second Largest element is:10
Largest element is 12

OR

import java.util.*;
public class second_largest
{
public static void main (String args[])
{
int n,i,j;
int largest,secondlarge;
Scanner sc=new Scanner(System.in);

System.out.println("Enter the  size  of an array: ");
n=sc.nextInt();

int a[]=new int[n];
System.out.println("Enter the  elements of an array: ");
for(i=0; i<n; i++)
{
a[i]=sc.nextInt();
}
largest=secondlarge=a[0];

for ( i = 0; i < n; i++)
{
if (a[i] > largest)
   { secondlarge = largest;
   largest = a[i];
}
else if (a[i] > secondlarge)
  { secondlarge = a[i];
}
}
System.out.println("Second Largest element is:"+secondlarge);
System.out.println(" Largest element is:"+largest);
}
}

Output:

Enter the  size  of an array: 

5

Enter the  elements of an array: 

10

5

12

15

18

Second Largest element is:15

Largest element is:18