Kotlin - Grade School Complete

kotlin/grade-school/.gradle/buildOutputCleanup/cache.properties

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+#Mon Jun 05 10:37:40 EDT 2017
+gradle.version=3.5

kotlin/grade-school/.gradle/buildOutputCleanup/cache.properties.lock

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+

kotlin/grade-school/.idea/compiler.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel>
+      <module name="grade-school_main" target="1.8" />
+      <module name="grade-school_test" target="1.8" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

kotlin/grade-school/.idea/gradle.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="LOCAL" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleHome" value="C:/Gradle/gradle-3.5" />
+        <option name="gradleJvm" value="#JAVA_HOME" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+          </set>
+        </option>
+        <option name="useAutoImport" value="true" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

kotlin/grade-school/.idea/libraries/Gradle__junit_junit_4_12.xml

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+<component name="libraryTable">
+  <library name="Gradle: junit:junit:4.12">
+    <CLASSES>
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+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/junit/junit/4.12/a6c32b40bf3d76eca54e3c601e5d1470c86fcdfa/junit-4.12-sources.jar!/" />
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kotlin/grade-school/.idea/libraries/Gradle__org_hamcrest_hamcrest_core_1_3.xml

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+<component name="libraryTable">
+  <library name="Gradle: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/42a25dc3219429f0e5d060061f71acb49bf010a0/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.hamcrest/hamcrest-core/1.3/1dc37250fbc78e23a65a67fbbaf71d2e9cbc3c0b/hamcrest-core-1.3-sources.jar!/" />
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+  </library>
+</component>

kotlin/grade-school/.idea/libraries/Gradle__org_jetbrains_annotations_13_0.xml

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kotlin/grade-school/.idea/libraries/Gradle__org_jetbrains_kotlin_kotlin_stdlib_1_1_1.xml

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+<component name="libraryTable">
+  <library name="Gradle: org.jetbrains.kotlin:kotlin-stdlib:1.1.1">
+    <CLASSES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.1.1/98e484e67f913e934559f7f55f0c94be5593f03c/kotlin-stdlib-1.1.1.jar!/" />
+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
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+  </library>
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kotlin/grade-school/.idea/libraries/Gradle__org_jetbrains_kotlin_kotlin_test_1_1_1.xml

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+<component name="libraryTable">
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+    </CLASSES>
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+    </SOURCES>
+  </library>
+</component>

kotlin/grade-school/.idea/libraries/Gradle__org_jetbrains_kotlin_kotlin_test_junit_1_1_1.xml

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+<component name="libraryTable">
+  <library name="Gradle: org.jetbrains.kotlin:kotlin-test-junit:1.1.1">
+    <CLASSES>
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+    </CLASSES>
+    <JAVADOC />
+    <SOURCES>
+      <root url="jar://$USER_HOME$/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-test-junit/1.1.1/ed59de63c4565c708124caaa4e86562a780f9ba0/kotlin-test-junit-1.1.1-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

kotlin/grade-school/.idea/misc.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="Java 1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/classes" />
+  </component>
+  <component name="masterDetails">
+    <states>
+      <state key="ProjectJDKs.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </component>
+</project>

kotlin/grade-school/.idea/modules.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/grade-school.iml" filepath="$PROJECT_DIR$/grade-school.iml" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/grade-school_main.iml" filepath="$PROJECT_DIR$/.idea/modules/grade-school_main.iml" group="grade-school" />
+      <module fileurl="file://$PROJECT_DIR$/.idea/modules/grade-school_test.iml" filepath="$PROJECT_DIR$/.idea/modules/grade-school_test.iml" group="grade-school" />
+    </modules>
+  </component>
+</project>

kotlin/grade-school/.idea/modules/grade-school_main.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="grade-school:main" external.linked.project.path="$MODULE_DIR$/../.." external.root.project.path="$MODULE_DIR$/../.." external.system.id="GRADLE" external.system.module.group="" external.system.module.type="sourceSet" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="2" platform="JVM 1.6" useProjectSettings="false">
+        <compilerSettings />
+        <compilerArguments>
+          <option name="noStdlib" value="true" />
+          <option name="noReflect" value="true" />
+          <option name="moduleName" value="grade-school_main" />
+          <option name="jvmTarget" value="1.6" />
+          <option name="addCompilerBuiltIns" value="true" />
+          <option name="loadBuiltInsFromDependencies" value="true" />
+          <option name="languageVersion" value="1.1" />
+          <option name="apiVersion" value="1.1" />
+          <option name="pluginClasspaths">
+            <array />
+          </option>
+          <option name="coroutinesWarn" value="true" />
+          <option name="pluginOptions">
+            <array />
+          </option>
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/../../build/classes/main" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../../src/main">
+      <sourceFolder url="file://$MODULE_DIR$/../../src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/../../src/main/kotlin" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/../../src/main/resources" type="java-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Gradle: org.jetbrains.kotlin:kotlin-stdlib:1.1.1" level="project" />
+    <orderEntry type="library" name="Gradle: org.jetbrains:annotations:13.0" level="project" />
+  </component>
+</module>

kotlin/grade-school/.idea/modules/grade-school_test.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="grade-school:test" external.linked.project.path="$MODULE_DIR$/../.." external.root.project.path="$MODULE_DIR$/../.." external.system.id="GRADLE" external.system.module.group="" external.system.module.type="sourceSet" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="FacetManager">
+    <facet type="kotlin-language" name="Kotlin">
+      <configuration version="2" platform="JVM 1.6" useProjectSettings="false">
+        <compilerSettings />
+        <compilerArguments>
+          <option name="noStdlib" value="true" />
+          <option name="noReflect" value="true" />
+          <option name="moduleName" value="grade-school_main" />
+          <option name="jvmTarget" value="1.6" />
+          <option name="addCompilerBuiltIns" value="true" />
+          <option name="loadBuiltInsFromDependencies" value="true" />
+          <option name="languageVersion" value="1.1" />
+          <option name="apiVersion" value="1.1" />
+          <option name="pluginClasspaths">
+            <array />
+          </option>
+          <option name="coroutinesWarn" value="true" />
+          <option name="pluginOptions">
+            <array />
+          </option>
+        </compilerArguments>
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output-test url="file://$MODULE_DIR$/../../build/classes/test" />
+    <exclude-output />
+    <content url="file://$MODULE_DIR$/../../src/test">
+      <sourceFolder url="file://$MODULE_DIR$/../../src/test/java" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../src/test/kotlin" isTestSource="true" />
+      <sourceFolder url="file://$MODULE_DIR$/../../src/test/resources" type="java-test-resource" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="module" module-name="grade-school_main" />
+    <orderEntry type="library" name="Gradle: org.jetbrains.kotlin:kotlin-stdlib:1.1.1" level="project" />
+    <orderEntry type="library" name="Gradle: junit:junit:4.12" level="project" />
+    <orderEntry type="library" name="Gradle: org.jetbrains.kotlin:kotlin-test-junit:1.1.1" level="project" />
+    <orderEntry type="library" name="Gradle: org.jetbrains:annotations:13.0" level="project" />
+    <orderEntry type="library" name="Gradle: org.hamcrest:hamcrest-core:1.3" level="project" />
+    <orderEntry type="library" name="Gradle: org.jetbrains.kotlin:kotlin-test:1.1.1" level="project" />
+  </component>
+  <component name="TestModuleProperties" production-module="grade-school_main" />
+</module>

kotlin/grade-school/README.md

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+# Grade School
+
+Given students' names along with the grade that they are in, create a roster
+for the school.
+
+In the end, you should be able to:
+
+- Add a student's name to the roster for a grade
+  - "Add Jim to grade 2."
+  - "OK."
+- Get a list of all students enrolled in a grade
+  - "Which students are in grade 2?"
+  - "We've only got Jim just now."
+- Get a sorted list of all students in all grades.  Grades should sort
+  as 1, 2, 3, etc., and students within a grade should be sorted
+  alphabetically by name.
+  - "Who all is enrolled in school right now?"
+  - "Grade 1: Anna, Barb, and Charlie. Grade 2: Alex, Peter, and Zoe.
+    Grade 3…"
+
+Note that all our students only have one name.  (It's a small town, what
+do you want?)
+
+
+## For bonus points
+
+Did you get the tests passing and the code clean? If you want to, these
+are some additional things you could try:
+
+- If you're working in a language with mutable data structures and your
+  implementation allows outside code to mutate the school's internal DB
+  directly, see if you can prevent this. Feel free to introduce additional
+  tests.
+
+Then please share your thoughts in a comment on the submission. Did this
+experiment make the code better? Worse? Did you learn anything from it?
+
+## Source
+
+A pairing session with Phil Battos at gSchool [http://gschool.it](http://gschool.it)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
+

kotlin/grade-school/build.gradle

@@ -0,0 +1,28 @@
+buildscript {
+  ext.kotlin_version = '1.1.1'
+  repositories {
+    mavenCentral()
+  }
+  dependencies {
+    classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+  }
+}
+
+apply plugin: 'kotlin'
+
+repositories {
+  mavenCentral()
+}
+
+dependencies {
+  compile "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
+
+  testCompile 'junit:junit:4.12'
+  testCompile "org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version"
+}
+test {
+  testLogging {
+    exceptionFormat = 'full'
+    events = ["passed", "failed", "skipped"]
+  }
+}

kotlin/grade-school/build/kotlin-build/caches/version.txt

@@ -0,0 +1 @@
+11001

kotlin/grade-school/grade-school.iml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module external.linked.project.id="grade-school" external.linked.project.path="$MODULE_DIR$" external.root.project.path="$MODULE_DIR$" external.system.id="GRADLE" external.system.module.group="" external.system.module.version="unspecified" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <excludeFolder url="file://$MODULE_DIR$/.gradle" />
+      <excludeFolder url="file://$MODULE_DIR$/build" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>

kotlin/grade-school/src/main/kotlin/School.kt

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+class School {
+    private var database: MutableMap<Int, List<String>> = emptyMap<Int, List<String>>().toMutableMap()
+    fun db(): Map<Int, List<String>>{
+        return database
+    }
+
+    fun sort(): Map<Int, List<String>>{
+        val returnDatabase = database.toSortedMap(Comparator<Int>{o1, o2 -> o1 - o2 })
+        // Super shitty and hacky but... ehhh
+        for (i in returnDatabase.keys){
+            returnDatabase.put(i, returnDatabase.getOrDefault(i, emptyList()).sorted())
+        }
+        return returnDatabase
+    }
+
+    fun add(name: String, grade: Int){
+        val gradeList: MutableList<String> = this.database.getOrDefault(grade, emptyList<String>()).toMutableList()
+        gradeList.add(name)
+        this.database.put(grade, gradeList)
+    }
+
+    fun grade(grade: Int): List<String>{
+        return this.database.getOrDefault(grade, emptyList<String>())
+    }
+
+}

kotlin/grade-school/src/test/kotlin/SchoolTest.kt

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+import org.junit.Before
+import org.junit.Test
+import org.junit.Ignore
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+
+class SchoolTest {
+
+    private lateinit var school: School
+
+    @Before
+    fun beforeTest() {
+        school = School()
+    }
+
+
+    @Test
+    fun startsWithNoStudents() {
+        assertTrue(school.db().isEmpty())
+    }
+
+    
+    @Test
+    fun addsStudents() {
+        school.add("Aimee", 2)
+
+        val expected = mapOf(2 to listOf("Aimee"))
+        assertEquals(expected, school.db())
+    }
+
+    
+    @Test
+    fun addsMoreStudentsInSameGrade() {
+        val grade = 2
+        school.add("James", grade)
+        school.add("Blair", grade)
+        school.add("Paul", grade)
+
+        val expected = mapOf(2 to listOf("James", "Blair", "Paul"))
+        assertEquals(expected, school.db())
+    }
+
+    
+    @Test
+    fun addsStudentsInMultipleGrades() {
+        school.add("Chelsea", 3)
+        school.add("Logan", 7)
+
+        val expected = mapOf(3 to listOf("Chelsea"), 7 to listOf("Logan"))
+        assertEquals(expected, school.db())
+    }
+
+    
+    @Test
+    fun getsStudentsInAGrade() {
+        school.add("Franklin", 5)
+        school.add("Bradley", 5)
+        school.add("Jeff", 1)
+
+        val expected = mapOf(5 to listOf("Franklin", "Bradley"), 1 to listOf("Jeff"))
+        assertEquals(expected, school.db())
+    }
+
+    
+    @Test
+    fun getsStudentsInEmptyGrade() {
+        assertTrue(school.grade(1).isEmpty())
+    }
+
+    
+    @Test
+    fun sortsSchool() {
+        school.add("Jennifer", 4)
+        school.add("Kareem", 6)
+        school.add("Christopher", 4)
+        school.add("Kyle", 3)
+
+        val expected = mapOf(6 to listOf("Kareem"), 4 to listOf("Christopher", "Jennifer"), 3 to listOf("Kyle"))
+        val sortedClasses = school.sort()
+        assertEquals(expected, sortedClasses)
+        assertEquals(listOf(3, 4, 6), sortedClasses.keys.toList(), "Grades not sorted in ascending order")
+
+        assertEquals(listOf("Jennifer", "Christopher"), school.db().get(4), "Original student order should not be mutated")
+    }
+}

kotlin/phone-number/.idea/workspace.xml

@@ -484,7 +484,7 @@
     </panes>
   </component>
   <component name="PropertiesComponent">
-    <property name="last_opened_file_path" value="$PROJECT_DIR$" />
+    <property name="last_opened_file_path" value="$PROJECT_DIR$/../grade-school" />
   </component>
   <component name="PsiViewer.ProjectComponent">
     <option name="HIGHLIGHT" value="false" />
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