In Java This exercise is focused on making you more familiar with the usage of t

Question

 In Java   This exercise is focused on making you more familiar with the usage of the lambda expressions in conjunction with Functional Interfaces (namely `IntPredicate`)  We already know that the following piece of code allows us to evaluate IntPredicate for a particular input value.      private static boolean applyPredicate(int value, IntPredicate predicate) {           return predicate.test(value);     } It tells us whether our integer value satisfies the condition conveyed by the predicate. e.g.           applyPredicate(2, x -> x > 100) returns false because 2 is not greater than 100     applyPredicate(15, x -> (x % 5 == 0)) returns true because 15 is divisible by 5  create a class `TeenCount` that implements the method `public static int[] teenLess(int[] array)` which takes in an array of integers as the input, applies the appropriate predicate over all the elements of  the array and then returns a new array containing only those values which are not teens i.e. values which don't lie between `13 and 19 inclusive`. Feel free to use the `applyPredicate()` method in your program  You can write a main method to test your code, if you may wish to.      Sample Input 1               Sample Output 1     {13, 15, 4, 5}               {4, 5}       Sample Input 2               Sample Output 2     {13, 19, 13, 14}             {}          Sample Input 3               Sample Output 3     {4, 3, 9, 0}                 {4, 3, 9, 0} 

Explanation / Answer

import java.util.Arrays; import java.util.function.IntPredicate; public class TeenCount { private static boolean applyPredicate(int value, IntPredicate predicate) { return predicate.test(value); } public static int[] teenLess(int[] array) { int count = 0; for(int i = 0; i 19; } })) { count++; } } int[] arr = new int[count]; int index = 0; for(int i = 0; i 19; } })) { arr[index++] = array[i]; } } return arr; } public static void main(String[] args) { System.out.println(Arrays.toString(teenLess(new int[] {13, 15, 4, 5}))); System.out.println(Arrays.toString(teenLess(new int[] {13, 19, 13, 14}))); System.out.println(Arrays.toString(teenLess(new int[] {4, 3, 9, 0}))); } }

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