Add task from StepikALT. Task MKAD, Department, SumOddNumber.

Frechman · Frechman · commit 3e98609f03f5 · 2018-02-07T14:02:35.000+03:00
diff --git a/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/MainDepartment.java b/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/MainDepartment.java
@@ -0,0 +1,47 @@
+package ru.frechman.exercises.stepickAlt;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class MainDepartment {
+
+    public static long calcNumberOfEmployees(List<Department> departments, long threshold) {
+        return departments.stream()
+                .filter(department -> department.getCode().startsWith("111-"))
+                .flatMap(department -> department.getList().stream())
+                .filter(employee -> employee.salary >= threshold).count();
+    }
+
+    class Employee {
+
+        String name;
+        long salary;
+
+        public String getName() {
+            return name;
+        }
+
+        public long getSalary() {
+            return salary;
+        }
+    }
+
+    class Department {
+
+        String code;
+        String name;
+        List<Employee> list = new ArrayList<>();
+
+        public String getCode() {
+            return code;
+        }
+
+        public String getName() {
+            return name;
+        }
+
+        public List<Employee> getList() {
+            return list;
+        }
+    }
+}
diff --git a/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/Mkad.java b/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/Mkad.java
@@ -0,0 +1,20 @@
+package ru.frechman.exercises.stepickAlt;
+
+import java.util.Scanner;
+
+public class Mkad {
+
+    public static void main(String[] args) {
+
+        Scanner scanner = new Scanner(System.in);
+        int v = scanner.nextInt();
+        int time = scanner.nextInt();
+
+        System.out.println(Mkad.getDistance(v, time));
+    }
+
+    public static int getDistance(int v, int time) {
+        return v >= 0 ? Math.abs(v * time) % 109 : Math.abs(109 - Math.abs(v * time) % 109) % 109;
+    }
+
+}
diff --git a/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/SumOddNumber.java b/Exercises/src/main/java/ru/frechman/exercises/stepickAlt/SumOddNumber.java
@@ -0,0 +1,11 @@
+package ru.frechman.exercises.stepickAlt;
+
+import java.util.stream.LongStream;
+
+public class SumOddNumber {
+
+    public static long sumOfOddNumbersInRange(long start, long end) {
+        return LongStream.rangeClosed(start, end).filter(x -> x % 2 != 0).sum();
+    }
+
+}
diff --git a/Exercises/src/test/java/ru/frechman/exercises/stepickAlt/MkadTest.java b/Exercises/src/test/java/ru/frechman/exercises/stepickAlt/MkadTest.java
@@ -0,0 +1,65 @@
+package ru.frechman.exercises.stepickAlt;
+
+import org.junit.Test;
+
+import static org.junit.Assert.assertEquals;
+
+public class MkadTest {
+
+    @Test
+    public void one() {
+        assertEquals(11, Mkad.getDistance(60, 2));
+    }
+
+    @Test
+    public void two() {
+        assertEquals(108, Mkad.getDistance(-1, 1));
+    }
+
+    @Test
+    public void getS() {
+        assertEquals(0, Mkad.getDistance(109, 1));
+    }
+
+    @Test
+    public void test2() {
+        assertEquals(0, Mkad.getDistance(109, 1));
+
+    }
+
+    @Test
+    public void test3() {
+        assertEquals(0, Mkad.getDistance(109, 10));
+
+    }
+
+    @Test
+    public void test4() {
+        assertEquals(0, Mkad.getDistance(-109, 10));
+    }
+
+    @Test
+    public void test5() {
+        assertEquals(47, Mkad.getDistance(-990, 1000));
+    }
+
+    @Test
+    public void test6() {
+        assertEquals(0, Mkad.getDistance(108, 109));
+    }
+
+    @Test
+    public void test11() {
+        assertEquals(0, Mkad.getDistance(-108, 109));
+    }
+
+    @Test
+    public void test7() {
+        assertEquals(2, Mkad.getDistance(107, 108));
+    }
+
+    @Test
+    public void test8() {
+        assertEquals(0, Mkad.getDistance(109, 108));
+    }
+}
diff --git a/Exercises/src/test/java/ru/frechman/exercises/stepickAlt/SumOddNumberTest.java b/Exercises/src/test/java/ru/frechman/exercises/stepickAlt/SumOddNumberTest.java
@@ -0,0 +1,13 @@
+package ru.frechman.exercises.stepickAlt;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class SumOddNumberTest {
+
+    @Test
+    public void sumOfOddNumbersInRange() {
+        assertEquals(3 + 5 + 7 + 9 + 11 + 13, SumOddNumber.sumOfOddNumbersInRange(3, 13));
+    }
+}
