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|
use crate::lab_trait::Lab;
use eframe::egui;
pub struct Window {
order: u32,
element: u32,
element_check: Option<bool>,
primitive_roots: Vec<u32>,
state: State,
}
impl Window {
fn clear_state(&mut self) {
self.element_check = None;
self.state = State::Idle;
}
}
impl Default for Window {
fn default() -> Self {
Self {
order: 29,
element: 2,
element_check: None,
primitive_roots: Vec::new(),
state: State::Idle,
}
}
}
impl Lab for Window {
fn get_name(&self) -> &str { "Задача №1" }
fn update(&mut self, ui: &mut egui::Ui) {
ui.horizontal(|ui| {
ui.label("Порядок поля: ");
if ui
.add(egui::DragValue::new(&mut self.order).clamp_range(2..=u32::MAX))
.changed()
{
self.clear_state();
}
});
ui.horizontal(|ui| {
ui.label("Проверяемый элемент: ");
if ui
.add(egui::DragValue::new(&mut self.element).clamp_range(1..=self.order - 1))
.changed()
{
self.clear_state();
}
});
if ui.button("Проверить элемент").clicked() {
let min = min_order(self.element, self.order);
self.element_check = Some(min == self.order - 1);
}
match self.element_check {
Some(true) => {
ui.label("Элемент является порождающим элементом");
}
Some(false) => {
ui.label("Элемент не является порождающим элементом");
}
None => {}
}
if ui.button("Рассчитать порождающие элементы").clicked() {
self.primitive_roots.clear();
self.state = if is_prime(self.order) {
State::Running(1)
} else {
State::Error
}
}
match self.state {
State::Running(current) => {
ui.label("Вычисление...");
let min = min_order(current, self.order);
if min == self.order - 1 {
self.primitive_roots.push(current);
}
self.state = if current == self.order - 1 {
State::Done
} else {
State::Running(current + 1)
}
}
State::Done => {
ui.label(format!(
"Порождающие элементы поля F_{}: {:?}",
self.order, self.primitive_roots
));
}
State::Idle => {}
State::Error => {
ui.label("Можно указать только простое число!");
}
}
}
}
enum State {
Idle,
Running(u32),
Done,
Error,
}
fn min_order(x: u32, order: u32) -> u32 {
let mut min = 0;
let mut pow = x;
for power in 1..order {
if pow == 1 {
min = power;
break;
}
pow = (pow * x) % order;
}
return min;
}
fn is_prime(x: u32) -> bool {
if x <= 1 {
return false;
}
for i in 2..x / 2 + 1 {
if x % i == 0 {
return false;
}
}
return true;
}
|
