feat: added triangle area class

AreaOfATriangle/AreaOfATriangle.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

AreaOfATriangle/src/AreaOfATriangle.java

@@ -0,0 +1,93 @@
+import java.util.Scanner;
+
+public class AreaOfATriangle {
+    int[] triangle = new int[3];
+
+    public void inputSide() {
+        Scanner sc = new Scanner(System.in);
+        boolean flag = false;
+        while (!this.isTriangleValid()) {
+            if (flag) {
+                System.out.println("Please enter the right triangle sides!");
+            }
+            for (int i = 0; i < 3; i++) {
+                boolean isChecked = false;
+                while (!isChecked) {
+                    try {
+                        System.out.print("Input Side " + (i + 1) + ": ");
+                        int value = sc.nextInt();
+                        if (value <= 0) {
+                            throw new NumberFormatException("Please enter a positive number greater than 0");
+                        }
+                        this.triangle[i] = value;
+                        isChecked = true;
+                    } catch (Exception e) {
+                        if (e.getClass() == NumberFormatException.class) {
+                            System.out.println(e.getMessage());
+                        } else {
+                            System.out.println("Please enter a valid number");
+                        }
+                        sc.nextLine();
+                    }
+                }
+            }
+            flag = true;
+        }
+
+        sc.close();
+    }
+
+    private boolean isTriangleValid() {
+        int len = this.triangle.length;
+        if (this.triangle[0] == 0 || this.triangle[1] == 0 || this.triangle[2] == 0) {
+            return false;
+        }
+        int maxSideIdx = 0;
+        for (int i = 0; i < len; i++) {
+            int max = Math.max(this.triangle[i], this.triangle[maxSideIdx]);
+            if (max != this.triangle[maxSideIdx]) {
+                maxSideIdx = i;
+            }
+        }
+        int start = 0;
+        int end = len - 1;
+        while (start < end) {
+            if (start == maxSideIdx) {
+                start++;
+            } else if (end == maxSideIdx) {
+                end--;
+            }
+            if (this.triangle[start] + this.triangle[end] < this.triangle[maxSideIdx]) {
+                return false;
+            }
+            start++;
+            end--;
+        }
+        return true;
+    }
+
+    public void printResult() {
+        double p = this.calculateHalfOfPerimeter();
+        double area = this.calculateArea(p);
+
+        System.out.println("The area of the triangle is " + area);
+    }
+
+    private double calculateHalfOfPerimeter() {
+        double p = 0;
+        for (int j : this.triangle) {
+            p += j;
+        }
+        p /= 2;
+        return p;
+    }
+
+    private double calculateArea(double p) {
+        double area = p;
+        for (int side : this.triangle) {
+            area *= (p - side);
+        }
+        area = Math.sqrt(area);
+        return area;
+    }
+}

AreaOfATriangle/src/Main.java

@@ -0,0 +1,7 @@
+public class Main {
+    public static void main(String[] args) {
+        AreaOfATriangle areaOfATriangle = new AreaOfATriangle();
+        areaOfATriangle.inputSide();
+        areaOfATriangle.printResult();
+    }
+}

Person/Person.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

Person/src/Main.java

@@ -0,0 +1,9 @@
+public class Main {
+    public static void main(String[] args) {
+        Person person = new Person();
+        person.input();
+        person.output();
+        person.changeName("John", "Dou");
+        person.output();
+    }
+}

Person/src/Person.java

@@ -0,0 +1,93 @@
+import java.time.LocalDate;
+import java.util.Scanner;
+
+public class Person {
+    private String firstName;
+    private String lastName;
+    private int birthYear;
+
+    public Person() {
+    }
+
+    public Person(String firstName, String lastName) {
+        this.setFirstName(firstName);
+        this.setLastName(lastName);
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    public void setBirthYear(int birthYear) {
+        this.birthYear = birthYear;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+    public String getLastName() {
+        return lastName;
+    }
+    public int getBirthYear() {
+        return birthYear;
+    }
+    private int getAge(){
+        int currentYear = LocalDate.now().getYear();
+        int birthYear = getBirthYear();
+        return currentYear-birthYear;
+    }
+    public void input(){
+        Scanner sc = new Scanner(System.in);
+        int currentYear = LocalDate.now().getYear();
+        System.out.println("Enter first name: ");
+        String firstName = sc.nextLine();
+        this.setFirstName(firstName);
+        System.out.println("Enter last name: ");
+        String lastName = sc.nextLine();
+        this.setLastName(lastName);
+        boolean isChecked = false;
+        while (!isChecked) {
+            try {
+                System.out.println("Enter birth year: ");
+                int birthYear = sc.nextInt();
+                if (birthYear <= 0 || birthYear > currentYear) {
+                    throw new NumberFormatException("Please enter a valid birth year!");
+                }
+                this.setBirthYear(birthYear);
+                isChecked = true;
+            } catch (Exception e) {
+                if (e.getClass() == NumberFormatException.class) {
+                    System.out.println(e.getMessage());
+                } else {
+                    System.out.println("Enter integer value!");
+                }
+            }
+            sc.nextLine();
+        }
+        sc.close();
+    }
+    public void output(){
+        System.out.println("\nInformation about person:");
+        System.out.println("First name: " + this.getFirstName());
+        System.out.println("Last name: " + this.getLastName());
+        System.out.println("Birth year: " + this.getBirthYear());
+        System.out.println("Age: " + this.getAge());
+    }
+    public void changeName(String ...info) {
+        String fn =  info[0];
+        String ln = info[1];
+        if (info.length > 2) {
+            throw new NumberFormatException("More than 2 parameters are not allowed!");
+        }
+        if (!fn.isEmpty()) {
+            this.setFirstName(fn);
+        }
+        if (!ln.isEmpty()) {
+            this.setLastName(ln);
+        }
+    }
+}

SmallestNumber/SmallestNumber.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

SmallestNumber/SmallestNumber.java

@@ -0,0 +1,2 @@
+public class SmallestNumber {
+}

SmallestNumber/src/Main.java

@@ -0,0 +1,7 @@
+public class Main {
+    public static void main(String[] args) {
+        SmallestNumber smallestNumber = new SmallestNumber();
+        smallestNumber.inputNumber();
+        smallestNumber.printResult();
+    }
+}

SmallestNumber/src/SmallestNumber.java

@@ -0,0 +1,41 @@
+import java.util.Scanner;
+
+public class SmallestNumber {
+    int[] number = new int[3];
+    String[] counter = {"first", "second", "third"};
+
+    public void inputNumber() {
+        Scanner sc = new Scanner(System.in);
+        for (int i = 0; i < number.length; i++) {
+            boolean isChecked = false;
+            while (!isChecked) {
+                try {
+                    System.out.print("Input the " + counter[i] + " number: ");
+                    int value = sc.nextInt();
+                    this.number[i] = value;
+                    isChecked = true;
+                } catch (Exception e) {
+                    System.out.println("Please enter an integer!");
+                }
+                sc.nextLine();
+            }
+        }
+        sc.close();
+    }
+
+    private int getSmallestNumber() {
+        int minI = 0;
+        for (int i = 0; i < number.length; i++) {
+            if (this.number[minI] > this.number[i]) {
+                minI = i;
+            }
+        }
+        return this.number[minI];
+    }
+
+    public void printResult() {
+        int res = this.getSmallestNumber();
+        System.out.println("The smallest number is " + res);
+    }
+}
+

Softserve.iml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>