Skip to content

HomeWork 11 #2

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
alkor63 merged 1 commit into from
Feb 5, 2023
Merged

HomeWork 11 #2

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
94 changes: 64 additions & 30 deletions src/Main.java
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,12 +1,52 @@
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Predicate;
import java.util.function.Supplier;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.function.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Main {
public static void main(String[] args) {
public static void main(String[] args) {

System.out.println("******* ДЗ 10 задача 1 *******");
System.out.println("******* ДЗ 11 задача 1 *******");
List<Integer> intList = new ArrayList<>();
int nums = 10; // количество чисел, которое хотим нагенерировать в массив
System.out.println("Генерируем массив из "+nums+" чисел:");
for (int i=0;i<nums;i++) {
java.util.Random random = new java.util.Random();
int j = random.nextInt(50);
intList.add(j); // генерируем целое число от 0 до 50, добавляем в массив
System.out.print(j+" ");
}
System.out.println("\nнаходим в этом массиве минимальное и максимальное значение:");
Stream<Integer> intStream = intList.stream();
findMinMax(intStream,Integer::compareTo,(min,max) -> System.out.println("минимум = "+min+" , максимум = "+max));
// -----------------------------------------------------------
System.out.println("\n******* ДЗ 11 задача 2 *******");
evenCounter(intList);
}
public static void evenCounter(List<Integer> intList){
System.out.println("В нашем массиве: "+intList.stream().filter(i -> i/2*2 == i).count()+" четных чисел");
Copy link
Copy Markdown

@artem-petrosyan artem-petrosyan Jan 30, 2023

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Можно так, а можно через i -> i%2 == 0

System.out.println("Чётные числа нашего массива: ");
System.out.println(intList.stream().filter(i -> i/2*2 == i).collect(Collectors.toList()));
}
public static <T> void findMinMax(
Stream<? extends T> stream,
Comparator<? super T> order,
BiConsumer<? super T, ? super T> minMaxConsumer)
{
List<T> arrayList;
T min = null;
T max = null;
arrayList = stream.sorted(order).collect(Collectors.toList());
if (arrayList.size() > 0) {
min = arrayList.get(0);
max = arrayList.get(arrayList.size() - 1);
}
minMaxConsumer.accept(min,max);
}
// =================================================================================
/* System.out.println("******* ДЗ 10 задача 1 *******");
java.util.Random random = new java.util.Random();
int iNum = random.nextInt(100) - 50; // генерируем целое число от -50 до 50
Predicate<Integer> p = new Predicate<Integer>() {
Expand Down Expand Up @@ -73,34 +113,28 @@ public Integer get() {

System.out.println("\n******* ДЗ 10 задача 5 *******");

Integer iNum1 = random.nextInt(100) - 50;
Integer iNum1 = random.nextInt(100);
System.out.println("Random number = " + iNum1);
Predicate<Object> condition = p2 -> {
return iNum1 / 2 * 2 == iNum1;
};
Function<Object, Integer> ifTrue = sT -> 2;
Function<Object, Integer> ifFalse = sT -> 1;
Function<Object, Integer> ff = ternaryOperator(condition, ifTrue, ifFalse);
String s1;
if (ff.apply(iNum1) == 2) { s1 = " четное число"; }
else { s1 = " нечетное число"; }
System.out.println(iNum1 + s1);
}
Predicate<Integer> condition = p2 -> iNum1 / 2 * 2 == iNum1;

private static Function<Object, Integer> ternaryOperator(Predicate<Object> condition,
Function<Object, Integer> ifTrue,
Function<Object, Integer> ifFalse) {
java.util.Random random2 = new java.util.Random();
Integer iNum = random2.nextInt(100) - 50;
String sf;
if (condition.test(iNum)) {
sf = "выпало четное число" + iNum;
return ifTrue;
} else {
sf = "выпало нечетное число" + iNum;
return ifFalse;
Function<Integer, String> ifTrue = sT -> "четное число";
Function<Integer, String> ifFalse = sT -> "нечетное число";
Function<Integer, String> ff = ternaryOperator(condition, ifTrue, ifFalse);
System.out.println(iNum1 + " = " + ff.apply(iNum1));
*/

private static <T, U> Function<T, U> ternaryOperator(
Predicate<? super T> condition,
Function<? super T, ? extends U> ifTrue,
Function<? super T, ? extends U> ifFalse) {
{
return t -> {
U result = condition.test(t) ? ifTrue.apply(t) : ifFalse.apply(t);
return result;
};
}
}

}


Expand Down