SecondLargest.java

package com.sarvesh.javabasics;

import java.util.Scanner;

public class SecondLargest {

 public static void main(String[] args) {

 Scanner sc = new Scanner(System.in);

 System.out.print("Enter number of elements: ");
 int n = sc.nextInt();

 int[] arr = new int[n];

 System.out.println("Enter elements:");
 for (int i = 0; i < n; i++) {
 arr[i] = sc.nextInt();
 }

 if (n < 2) {
 System.out.println(-1);
 return;
 }

 int max = arr[0];
 int second = -1;

 for (int i = 1; i < n; i++) {

 if (arr[i] > max) {
 second = max;
 max = arr[i];
 } else if (arr[i] < max && arr[i] > second) {
 second = arr[i];
 }
 }

 System.out.println("Second Largest: " + second);

 sc.close();
 }
}