package fp;

import java.math.BigDecimal;

import java.util.ArrayList;

import java.util.Comparator;

import java.util.Map;

import java.util.function.$*$;

import java.util.stream.Collectors;

import java.util.List;

class ExerciseNotCompletedException extends RuntimeException $\{$

public ExerciseNotCompletedException$()\{$

super$("$Exercise is not completed yet"$)$;

$\}$

$\}$

$/**$

$*\{$@link HW$\}$ is an exercise class. Each method returns a functional interface and it should be implemented

$*$ using either lambda or a method reference. Every method that is not implemented yet throws

$*\{$@link ExerciseNotCompletedException$\}.$

$*$

$*$ TODO: remove exception and implement each method of this class using lambda or method reference

$*$

$/**$

$*$ Returns a $\{$@link BiFunction$\}$ that has two parameters. First is $\{$@link IntUnaryOperator$\}$ which is some integer function.

$*$ Second is $\{$@link IntPredicate$\}$ which is some integer condition. And the third is $\{$@link IntUnaryOperator$\}$ which is

$*$ a new composed function that uses provided predicate $($second parameter of binary function$)$ to verify its input

$*$ parameter. If predicate returns $\{$@code true$\}$ it applies a provided integer function

$*($first parameter of binary function$)$ and returns a result value, otherwise it returns an element itself.

$*$

$*$ @return a binary function that receiver predicate and function and compose them to create a new function

$*/$

public static BiFunction functionToConditionalFunction$()\{$

throw new ExerciseNotCompletedException$()$;

$\}$