Question

                                                                                                                                                                                                                                                                                   

Write a static method named largestLessThan that takes two arguments. The first argument will be an array of int values (you may safely assume that all values in the array will be positive). The second argument will be an int max value. The method should return the largest value in the array that is less than the max value. If there is no value in the array that is less than the max value, then the method should return 0.

Examples:
    Given the following array declaration and definition.
        int[] theArray = {6, 4, 10, 2, 7, 13, 8, 15};

        largestLessThan (theArray , 13) will return 10
        largestLessThan (theArray , 7) will return 6
        largestLessThan (theArray , 50) will return 15
        largestLessThan (theArray , 1) will return 0

Answer 1

public class LargestLessThan {

    public static int largestLessThan(int[] arr, int num) {
        int max = 0;
        for (int i = 0; i < arr.length; i++) {
            if (arr[i] > max && arr[i] < num) {
                max = arr[i];
            }
        }
        return max;
    }

    public static void main(String[] args) {
        int[] theArray = {6, 4, 10, 2, 7, 13, 8, 15};
        System.out.println(largestLessThan(theArray, 13));
        System.out.println(largestLessThan(theArray, 7));
        System.out.println(largestLessThan(theArray, 50));
        System.out.println(largestLessThan(theArray, 1));
    }
}