Second largest element

AJ Java Programs

Program 5:

Finding Second Largest Element in Array
Ex: {2,3,4,5,3,1} are elements then 4 is second largest element

Syntax:

Way 1: PreDefined

import java.io.*;
public class FindsecondLargest
{
    public static void main(String[] args) {
        // intialize the array values
        int arr[] = { 1, 23, 47, 81, 92, 52, 48, 56, 66, 65 };
        int largest = arr[0];
        int secondLargest = arr[0];
        // check the condition
        for (int i = 0; i < arr.length; i++) {
            // this condition check for largest number
            if (arr[i] > largest) {
                secondLargest = largest;
                largest = arr[i];

            } else if (arr[i] > secondLargest) {
                secondLargest = arr[i];

            }
        }
        // print the result
        System.out.println("second largest number is:" + secondLargest);

    }
}

Way 2: UserDefined

import java.io.*;
public class secondLargest
{
    public static void main(String[] args)throws IOException
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
       
        // intialize the array values
        System.out.println("Enter number of elements you want to insert in array");
        int n=Integer.parseInt(br.readLine());
       
        int arr[] = new int[n+1];
        System.out.println("Enter elements");
        for(int j = 0;j < n; j++)
        {
            arr[j] = Integer.parseInt(br.readLine());
           
        }
        int largest = arr[0];
        int secondLargest = arr[0];
        // check the condition
        for (int i = 0; i < arr.length; i++) {
            // this condition check for largest number
            if (arr[i] > largest) {
                secondLargest = largest;
                largest = arr[i];

            } else if (arr[i] > secondLargest) {
                secondLargest = arr[i];

            }
        }
        // print the result
        System.out.println("second largest number is:" + secondLargest);

    }
}

Tested Ok Program
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