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Java program to find second largest element in an array



In this java program, we are reading an integer array of N elements and finding second largest element among them.
Submitted by Chandra Shekhar, on February 03, 2018

Given an array of N integers and we have to find its second largest element using Java program.

Example:

    Input:
    Enter number of elements: 4
    Input elements: 45, 25, 69, 40

    Output:
    Second largest element in: 45

Program to find second largest element from an array in java

import java.util.Scanner;

public class ExArraySecondLargest
{
    public static void main(String[] args) 
    {
    	// intialise here.
        int n, max;
        
        // create object of scanner class.
        Scanner Sc = new Scanner(System.in);
        
        // enter total number of elements.
        System.out.print("Enter total number of elements you wants : ");
        n = Sc.nextInt();
        
        // creating array object.
        int a[] = new int[n];
        
        // enter the elements here.
        System.out.println("Enter all the elements:");
        for (int i = 0; i < n; i++) 
        {
            a[i] = Sc.nextInt();
        }
        for (int i = 0; i < n; i++) 
        {
            for (int j = i + 1; j < n; j++) 
            {
                if (a[i] > a[j]) 
                {
                    max = a[i];
                    a[i] = a[j];
                    a[j] = max;
                }
            }
        }
        System.out.println("The Second Largest Elements in the Array is :"+a[n-2]);
    }
}

Output

Enter total number of elements you wants : 4
Enter all the elements:
55
45
25
89
The Second Largest Elements in the Array is :55





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