FindLargest.java

import java.util.Arrays;

public class FindLargest {
    public static int findLargest(int[] nums) {
        int largest = nums[0];
        for (int num : nums) {
            if (num > largest) {
                largest = num;
            }
        }
        return largest;
    }

    public static int findMallest(int[] nums) {
        return Arrays.stream(nums).min().getAsInt();
    }

public static int findSecondLargest(int[] nums) {

    return Arrays.stream(nums)

            .distinct()                  // Remove duplicates
            .boxed()                     // IntStream -> Stream<Integer>
            .sorted((a, b) -> b - a)     // Descending order
            .skip(1)                     // Skip largest
            .findFirst()                 // Get second largest
            .orElseThrow(() ->
                new IllegalArgumentException(
                    "Array must contain at least two distinct values"));

}
    public static void main(String[] args) {
        int[] numbers = {10, 5, 19, 8, 20, 15};
        int result = findLargest(numbers);
        System.out.println("Largest Element: " + result);
        System.out.println("Mallest Element: " + findMallest(numbers));
        System.out.println("Mallest Element: " + findSecondLargest(numbers));
    }
    
}