Javatasks123 · Javatasks123 · Oct 6, 2025
diff --git a/task01/src/com/example/task01/Point.java b/task01/src/com/example/task01/Point.java
@@ -1,14 +1,38 @@
 package com.example.task01;
 
-/**
- * Класс точки на плоскости
- */
-public class Point {
+public class Point
+{
     int x;
     int y;
 
-    void print() {
+    public Point()
+    {
+        x = 0;
+        y = 0;
+    }
+
+    void flip()
+    {
+        int temp = x;
+        x = -y;
+        y = -temp;
+    }
+
+    double distance(Point point)
+    {
+        double distX = Math.pow(x-point.x,2);
+        double distY = Math.pow(y-point.y,2);
+        return Math.sqrt(distY + distX); //d=√(Xb-Xa)^2+(Yb-Ya)^2)
+    }
+
+    public String toString()
+    {
+        return String.format("%d %d",x, y);
+    }
+
+    void print()
+    {
         String pointToString = String.format("(%d, %d)", x, y);
         System.out.println(pointToString);
     }
-}
+}
diff --git a/task02/src/com/example/task02/TimeSpan.java b/task02/src/com/example/task02/TimeSpan.java
@@ -0,0 +1,75 @@
+package com.example.task02;
+
+public class TimeSpan
+{
+    private int hours;
+    private int minutes;
+    private int seconds;
+
+    public TimeSpan(int hours, int minutes, int seconds)
+    {
+        this.hours = hours;
+        this.minutes = minutes;
+        this.seconds = seconds;
+        correctTime();
+    }
+    public int getHours()
+    {
+        return hours;
+    }
+
+    public int getMinutes()
+    {
+        return minutes;
+    }
+
+    public int getSeconds()
+    {
+        return seconds;
+    }
+
+    public void setHours(int hours)
+    {
+        this.hours = hours;
+        correctTime();
+    }
+
+    public void setMinutes(int minutes)
+    {
+        this.minutes = minutes;
+        correctTime();
+    }
+
+    public void setSeconds(int seconds)
+    {
+        this.seconds = seconds;
+        correctTime();
+    }
+
+    private void correctTime()
+    {
+        int totalSecond = hours * 3600 + minutes * 60 + seconds;
+        this.hours = totalSecond / 3600;
+        this.minutes = (totalSecond % 3600) / 60;
+        this.seconds = (totalSecond % 3600) % 60;
+    }
+
+    void add(TimeSpan time)
+    {
+        this.hours += time.hours;
+        this.minutes += time.minutes;
+        this.seconds += time.seconds;
+        correctTime();
+    }
+
+    void subtract(TimeSpan time) {
+        this.hours -= time.hours;
+        this.minutes -= time.minutes;
+        this.seconds -= time.seconds;
+        correctTime();
+    }
+
+    public String toString() {
+        return hours + ":" + minutes + ":" + seconds;
+    }
+}
diff --git a/task03/src/com/example/task03/ComplexN.java b/task03/src/com/example/task03/ComplexN.java
@@ -0,0 +1,47 @@
+package com.example.task03;
+
+public class ComplexN
+{
+    private final double realPart;
+    private final double imaginaryPart;
+
+    public ComplexN(double realPart, double imaginaryPart)
+    {
+        this.realPart = realPart;
+        this.imaginaryPart = imaginaryPart;
+    }
+
+    public double getRealPart()
+    {
+        return realPart;
+    }
+
+    public double getImaginaryPart()
+    {
+        return imaginaryPart;
+    }
+
+    public ComplexN add(ComplexN complexNumber)
+    {
+        double real = this.realPart + complexNumber.realPart;
+        double imaginary = this.imaginaryPart + complexNumber.imaginaryPart;
+        return new ComplexN(real, imaginary);
+    }
+
+    public ComplexN multiply(ComplexN complexNumber) //по формуле (a1+b1*i)(a2+b2*i)=(a1a2-b1b2)+(a1b2+a2b1)i
+    {
+        double real = this.realPart * complexNumber.realPart - this.imaginaryPart * complexNumber.imaginaryPart;
+        double imaginary = this.realPart * complexNumber.imaginaryPart + this.imaginaryPart * complexNumber.realPart;
+        return new ComplexN(real, imaginary);
+    }
+
+    @Override
+    public String toString() //для вывода на экран в стандартной форме
+    {
+        if (imaginaryPart >= 0)
+        {
+            return realPart + "+" + imaginaryPart + "i";
+        }
+        return realPart + "-" + (-imaginaryPart) + "i";
+    }
+}
diff --git a/task03/src/com/example/task03/Task03Main.java b/task03/src/com/example/task03/Task03Main.java
@@ -1,7 +1,14 @@
 package com.example.task03;
 
-public class Task03Main {
-    public static void main(String[] args) {
-
+public class Task03Main
+{
+    public static void main(String[] args)
+    {
+        ComplexN z1 = new ComplexN(1, 2);
+        ComplexN z2 = new ComplexN(-5, 3);
+        System.out.println(z1); //1+2i
+        System.out.println(z2); //-5+3i
+        System.out.println(z1.add(z2)); //-4+5i
+        System.out.println(z1.multiply(z1)); //-3+4i
     }
-}
+}
diff --git a/task04/src/com/example/task04/Line.java b/task04/src/com/example/task04/Line.java
@@ -0,0 +1,34 @@
+package com.example.task04;
+
+public class Line
+{
+    private final Point p1;
+    private final Point p2;
+
+    public Line(Point p1, Point p2)
+    {
+        this.p1 = p1;
+        this.p2 = p2;
+    }
+
+    public Point getP1()
+    {
+        return p1;
+    }
+
+    public Point getP2()
+    {
+        return p2;
+    }
+
+    @Override
+    public String toString()
+    {
+        return String.format("(%d, %d), (%d, %d)", p1.x, p1.y, p2.x, p2.y);
+    }
+
+    public boolean isCollinearLine(Point p)
+    {
+        return ((p2.x - p1.x) * (p.y - p1.y) - (p.x - p1.x) * (p2.y - p1.y)) == 0;
+    }
+}
diff --git a/task04/src/com/example/task04/Point.java b/task04/src/com/example/task04/Point.java
@@ -0,0 +1,38 @@
+package com.example.task04;
+
+public class Point
+{
+    final int x;
+    final int y;
+
+    public Point(int x,int y)
+    {
+        this.x = x;
+        this.y = y;
+    }
+
+    void flip()
+    {
+        int temp = x;
+        x = -y;
+        y = -temp;
+    }
+
+    double distance(Point point)
+    {
+        double distX = Math.pow(x-point.x,2);
+        double distY = Math.pow(y-point.y,2);
+        return Math.sqrt(distY + distX); //d=√(Xb-Xa)^2+(Yb-Ya)^2)
+    }
+
+    public String toString()
+    {
+        return String.format("%d %d",x, y);
+    }
+
+    void print()
+    {
+        String pointToString = String.format("(%d, %d)", x, y);
+        System.out.println(pointToString);
+    }
+}
diff --git a/task05/src/com/example/task05/Point.java b/task05/src/com/example/task05/Point.java
@@ -1,49 +1,30 @@
 package com.example.task05;
 
-/**
- * Точка в двумерном пространстве
- */
-public class Point {
+public class Point
+{
+    private final double x;
+    private final double y;
 
-    /**
-     * Конструктор, инициализирующий координаты точки
-     *
-     * @param x координата по оси абсцисс
-     * @param y координата по оси ординат
-     */
-    public Point(double x, double y) {
-        throw new AssertionError();
+    public Point(double x, double y)
+    {
+        this.x = x;
+        this.y = y;
     }
 
-    /**
-     * Возвращает координату точки по оси абсцисс
-     *
-     * @return координату точки по оси X
-     */
-    public double getX() {
-        // TODO: реализовать
-        throw new AssertionError();
+    public double getX()
+    {
+        return x;
     }
 
-    /**
-     * Возвращает координату точки по оси ординат
-     *
-     * @return координату точки по оси Y
-     */
-    public double getY() {
-        // TODO: реализовать
-        throw new AssertionError();
+    public double getY()
+    {
+        return y;
     }
 
-    /**
-     * Подсчитывает расстояние от текущей точки до точки, переданной в качестве параметра
-     *
-     * @param point вторая точка отрезка
-     * @return расстояние от текущей точки до переданной
-     */
-    public double getLength(Point point) {
-        // TODO: реализовать
-        throw new AssertionError();
+    public double getLength(Point point)
+    {
+        double a = Math.pow(x - point.x, 2);
+        double b = Math.pow(y - point.y, 2);
+        return Math.sqrt(a + b);
     }
-
-}
+}