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
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