Java Program to Find Second Largest Array Number

Write a Java Program to Find Second Largest Array Number with an example. Or how to write a Java Program to find the second largest element or item in a given array.

In this Java second largest array number example, we allow the user to enter the secLrg_arr size and the array items. Next, we use the Else If statement to find the largest and the second largest event in this secLrg_arr array.

package ArrayPrograms;

import java.util.Scanner;

public class SecondLargestElement {
	private static Scanner sc;
	
	public static void main(String[] args) {
		int Size, i, first, second, lg_Position = 0;
		
		sc = new Scanner(System.in);		
		System.out.print("\nPlease Enter the SEC LRG Array size : ");
		Size = sc.nextInt();

		int[] secLrg_arr = new int[Size];
		System.out.format("\nEnter SEC LRG Array %d elements  : ", Size);
		for(i = 0; i < Size; i++) 
		{
			secLrg_arr[i] = sc.nextInt();
		}
		
		first = second = Integer.MIN_VALUE;
		
		for(i = 0; i < Size; i++) 
		{
			if(secLrg_arr[i] > first) {
				second = first;
				first = secLrg_arr[i];
				lg_Position = i;
			}
			else if(secLrg_arr[i] > second && secLrg_arr[i] < first)
			{
				second = secLrg_arr[i];
			}
		}
		System.out.format("\nLargest Item in SEC LRG Array    = %d", first);
		System.out.format("\nLargest Item Index position  = %d", lg_Position);
		System.out.format("\n\nSecond Largest Item in SEC LRG Array  = %d", second);
	}

}

Java Program to Find Second Largest Array Number example 2

In this Java code for second largest array item, we created a separate SecondLargestElement function to find and return the second largest item in a given array.

package ArrayPrograms;

import java.util.Scanner;

public class SecondLargestElement0 {
	private static Scanner sc;
	
	public static void main(String[] args) {
		int Size, i;
		
		sc = new Scanner(System.in);		
		System.out.print("\nPlease Enter the SEC LRG Array size : ");
		Size = sc.nextInt();
		
		int[] secLrg_arr = new int[Size];
		
		System.out.format("\nEnter SEC LRG Array %d elements  : ", Size);
		for(i = 0; i < Size; i++) 
		{
			secLrg_arr[i] = sc.nextInt();
		}		
		SecondLargestElement(secLrg_arr, Size);		
	}
	public static void SecondLargestElement(int[] secLrg_arr, int Size) {
		
		int i, first, second, lg_Position = 0;
		
		first = second = Integer.MIN_VALUE;
		
		for(i = 0; i < Size; i++) 
		{
			if(secLrg_arr[i] > first) {
				second = first;
				first = secLrg_arr[i];
				lg_Position = i;
			}
			else if(secLrg_arr[i] > second && secLrg_arr[i] < first)
			{
				second = secLrg_arr[i];
			}
		}
		System.out.format("\nLargest Item in SEC LRG Array    = %d", first);
		System.out.format("\nLargest Item Index position  = %d", lg_Position);
		System.out.format("\n\nSecond Largest Item in SEC LRG Array  = %d", second);
	}
}

Java Second Largest Array element output

Please Enter the SEC LRG Array size : 11

Enter SEC LRG Array 11 elements  : 10 20 44 77 89 95 200 22 88 250 111

Largest Item in SEC LRG Array    = 250
Largest Item Index position  = 9

Second Largest Item in SEC LRG Array  = 200