Kuzmenkov Gleb

task01/src/com/example/task01/Point.java

@@ -6,7 +6,22 @@
 public class Point {
     int x;
     int y;
-
+    Point(){}
+    Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+    void flip() {
+        int temp = x;
+        x = (-1) * y;
+        y = (-1) * temp;
+    }
+    double distance(Point point) {
+        return Math.sqrt((y - point.y) * (y - point.y) + (x - point.x) * (x - point.x));
+    }
+    public String toString() {
+        return "(" + Integer.toString(x) + ", " + Integer.toString(y) + ")";
+    }
     void print() {
         String pointToString = String.format("(%d, %d)", x, y);
         System.out.println(pointToString);

task02/src/com/example/task02/TimeSpan.java

@@ -0,0 +1,70 @@
+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 + minutes / 60 + seconds / 3600;
+        minutes %= 60;
+        seconds %= 3600;
+        this.minutes = minutes + seconds / 60;
+        seconds %= 60;
+        this.seconds = seconds;
+    }
+
+    public void setHours(int hours) {
+        this.hours = hours;
+    }
+
+    public void setMinutes(int minutes) {
+        hours += minutes / 60;
+        this.minutes = minutes % 60;
+    }
+
+    public void setSeconds(int seconds) {
+        hours = seconds / 3600;
+        seconds %= 3600;
+        minutes = seconds / 60;
+        this.seconds = seconds % 60;
+    }
+
+    public int getHours() {
+        return hours;
+    }
+
+    public int getMinutes() {
+        return minutes;
+    }
+
+    public int getSeconds() {
+        return seconds;
+    }
+
+    void add(TimeSpan time) {
+        seconds += time.getSeconds();
+        minutes += time.getMinutes() + seconds / 60;
+        seconds %= 60;
+        hours += time.getHours() + minutes / 60 + seconds / 60;
+    }
+
+    void subtract(TimeSpan time) {
+        seconds -= time.getSeconds();
+        if (seconds < 0) {
+            seconds += 60;
+            minutes--;
+        }
+        minutes -= time.getMinutes();
+        if (minutes < 0) {
+            minutes += 60;
+            hours--;
+        }
+        hours -= time.getHours();
+        if (hours < 0) System.err.println("Отрицательное время?");
+    }
+
+    public String toString() {
+        return  Integer.toString(hours) + ":" + Integer.toString(minutes) + ":" +Integer.toString(seconds);
+    }
+}

task03/src/com/example/task03/ComplexNumber.java

@@ -0,0 +1,39 @@
+package com.example.task03;
+
+public class ComplexNumber {
+    private int real;
+    private int imaginary;
+
+    ComplexNumber(int real, int imaginary) {
+        this.real = real;
+        this.imaginary = imaginary;
+    }
+
+    public void setReal(int real) {
+        this.real = real;
+    }
+
+    public void setImaginary(int imaginary) {
+        this.imaginary = imaginary;
+    }
+
+    public int getReal() {
+        return real;
+    }
+
+    public int getImaginary() {
+        return imaginary;
+    }
+
+    public ComplexNumber add(ComplexNumber number) {
+        return new ComplexNumber(real + number.real, imaginary + number.imaginary);
+    }
+
+    public ComplexNumber mul(ComplexNumber number) {
+        return new ComplexNumber(real * number.real - imaginary * number.imaginary, imaginary * number.real + number.imaginary * real);
+    }
+
+    public String toString() {
+        return "(" + Integer.toString(real) + ", " + Integer.toString(imaginary) + "i" + ")";
+    }
+}

task03/src/com/example/task03/Task03Main.java

@@ -2,6 +2,9 @@
 
 public class Task03Main {
     public static void main(String[] args) {
-
+        ComplexNumber a = new ComplexNumber(1, 2);
+        ComplexNumber b = new ComplexNumber(3, 4);
+        System.out.println(a + " + " + b + " = " + a.add(b));
+        System.out.println(a + " * " + b + " = " + a.mul(b));
     }
 }

task04/src/com/example/task04/Line.java

@@ -0,0 +1,26 @@
+package com.example.task04;
+
+public class Line {
+    private Point p1;
+    private Point p2;
+    Line(Point p1, Point p2){
+        this.p1 = p1;
+        this.p2 = p2;
+    }
+
+    public Point getP1() {
+        return p1;
+    }
+
+    public Point getP2() {
+        return p2;
+    }
+
+    public String toString() {
+        return p1.toString() + ":" + p2.toString();
+    }
+
+    public boolean isCollinearLine(Point p){
+        return (p.x - p1.x)/(p2.x - p1.x) == (p.y - p1.y)/(p2.y - p1.y);
+    }
+}

task04/src/com/example/task04/Point.java

@@ -0,0 +1,18 @@
+package com.example.task04;
+
+public class Point {
+    final int x;
+    final int y;
+    Point(int x, int y) {
+        this.x = x;
+        this.y = y;
+    }
+
+    double distance(Point point) {
+        return Math.sqrt((y - point.y) * (y - point.y) + (x - point.x) * (x - point.x));
+    }
+    public String toString() {
+        return "(" + Integer.toString(x) + ", " + Integer.toString(y) + ")";
+    }
+
+}

task05/src/com/example/task05/Point.java

@@ -11,8 +11,11 @@ public class Point {
      * @param x координата по оси абсцисс
      * @param y координата по оси ординат
      */
+    private final double x;
+    private final double y;
     public Point(double x, double y) {
-        throw new AssertionError();
+        this.x = x;
+        this.y = y;
     }
 
     /**
@@ -22,7 +25,7 @@ public Point(double x, double y) {
      */
     public double getX() {
         // TODO: реализовать
-        throw new AssertionError();
+        return x;
     }
 
     /**
@@ -32,7 +35,7 @@ public double getX() {
      */
     public double getY() {
         // TODO: реализовать
-        throw new AssertionError();
+        return y;
     }
 
     /**
@@ -43,7 +46,7 @@ public double getY() {
      */
     public double getLength(Point point) {
         // TODO: реализовать
-        throw new AssertionError();
+        return Math.sqrt((x - point.x) * (x - point.x) + (y - point.y) * (y - point.y));
     }
 
 }

task05/src/com/example/task05/PolygonalLine.java

@@ -1,5 +1,8 @@
 package com.example.task05;
 
+import java.util.ArrayList;
+import java.util.Arrays;
+
 /**
  * Ломаная линия
  */
@@ -10,8 +13,11 @@ public class PolygonalLine {
      *
      * @param points массив точек, которыми нужно проинициализировать ломаную линию
      */
+    ArrayList<Point> points;
     public void setPoints(Point[] points) {
         // TODO: реализовать
+        for (Point point : points)
+            addPoint(point);
     }
 
     /**
@@ -21,6 +27,7 @@ public void setPoints(Point[] points) {
      */
     public void addPoint(Point point) {
         // TODO: реализовать
+        points.add(new Point(point.getX(), point.getY()));
     }
 
     /**
@@ -31,6 +38,7 @@ public void addPoint(Point point) {
      */
     public void addPoint(double x, double y) {
         // TODO: реализовать
+        points.add(new Point(x, y));
     }
 
     /**
@@ -40,7 +48,11 @@ public void addPoint(double x, double y) {
      */
     public double getLength() {
         // TODO: реализовать
-        throw new AssertionError();
+        double length = 0;
+        for (int i = 0; i < points.size() - 1; i++) {
+            length += points.get(i).getLength(points.get(i + 1));
+        }
+        return length;
     }
 
 }