From 21ea0aa5a236f573fe4d4ef7bb6c2927b992ecc6 Mon Sep 17 00:00:00 2001 From: kshields412 Date: Wed, 27 Nov 2019 17:20:45 -0500 Subject: [PATCH 1/2] anthropoid tests passed --- looptest.iml | 8 +++--- .../streams/anthropoid/PersonFactory.java | 6 ++--- .../streams/anthropoid/PersonWarehouse.java | 26 +++++++++++++------ 3 files changed, 25 insertions(+), 15 deletions(-) diff --git a/looptest.iml b/looptest.iml index 7f2d304..792af39 100644 --- a/looptest.iml +++ b/looptest.iml @@ -10,10 +10,10 @@ - + - - - + + + \ No newline at end of file diff --git a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java index a10ec7b..f7eb646 100644 --- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java +++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java @@ -39,7 +39,7 @@ public Person createRandomPerson() { * @return - ArrayList of Person objects */ // TODO public List createPersonList(int listSize) { - return null; + return Stream.generate(this::createRandomPerson).limit(listSize).collect(Collectors.toList()); } @@ -48,7 +48,7 @@ public List createPersonList(int listSize) { * @return - Array of Person objects */ // TODO public Person[] createPersonArray(int arrayLength) { - return null; + return Stream.generate(this::createRandomPerson).limit(arrayLength).toArray(Person[]::new); } @@ -59,6 +59,6 @@ public Person[] createPersonArray(int arrayLength) { * @return - Stream representation of collection of Person objects */ // TODO public Stream createPersonStream(int streamCount) { - return null; + return Stream.generate(this::createRandomPerson).limit(streamCount); } } diff --git a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java index a4960b1..f87dfc9 100644 --- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java +++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java @@ -8,6 +8,7 @@ import java.util.Iterator; import java.util.List; import java.util.Map; +import java.util.function.Function; import java.util.stream.Collectors; import java.util.stream.Stream; @@ -36,7 +37,7 @@ public void addPerson(Person person) { * @return list of names of Person objects */ // TODO public List getNames() { - return null; + return people.stream().map(Person::getName).collect(Collectors.toList()); } @@ -44,7 +45,15 @@ public List getNames() { * @return list of uniquely named Person objects */ //TODO public Stream getUniquelyNamedPeople() { - return null; + ArrayList names = new ArrayList<>(); + return people.stream().filter(unique -> { + if (!names.contains(unique.getName())){ + names.add(unique.getName()); + return true; + } + else + return false; + }); } @@ -53,7 +62,7 @@ public Stream getUniquelyNamedPeople() { * @return a Stream of respective */ //TODO public Stream getUniquelyNamedPeopleStartingWith(Character character) { - return null; + return people.stream().filter(name -> (name.getName().startsWith(String.valueOf(character)))); } /** @@ -61,22 +70,22 @@ public Stream getUniquelyNamedPeopleStartingWith(Character character) { * @return a Stream of respective */ //TODO public Stream getFirstNUniquelyNamedPeople(int n) { - return null; + return getUniquelyNamedPeople().limit(n); } /** * @return a mapping of Person Id to the respective Person name */ // TODO public Map getIdToNameMap() { - return null; + return people.stream().collect(Collectors.toMap(Person::getPersonalId, Person::getName)); + //creates a map that has a key as personal id and a value as a name } - /** * @return Stream of Stream of Aliases */ // TODO public Stream> getNestedAliases() { - return null; + return people.stream().map(name -> Stream.of(name.getAliases())); } @@ -84,7 +93,8 @@ public Stream> getNestedAliases() { * @return Stream of all Aliases */ // TODO public Stream getAllAliases() { - return null; + return getNestedAliases().flatMap(Function.identity()); + //look into further to understand exactly how this works. } // DO NOT MODIFY From 499bcaee83ac86e658a559631da0cd902d1c2b0a Mon Sep 17 00:00:00 2001 From: kshields412 Date: Wed, 27 Nov 2019 21:37:00 -0500 Subject: [PATCH 2/2] completed lab --- .../zipcodewilmington/streams/StreamFilter.java | 14 +++++++------- .../com/zipcodewilmington/streams/StreamMap.java | 8 +++++--- .../streams/conversions/ArrayConverter.java | 5 +++-- .../streams/conversions/ListConverter.java | 5 +++-- .../streams/conversions/StreamConverter.java | 6 +++--- 5 files changed, 21 insertions(+), 17 deletions(-) diff --git a/src/main/java/com/zipcodewilmington/streams/StreamFilter.java b/src/main/java/com/zipcodewilmington/streams/StreamFilter.java index d8b89ae..48225c7 100644 --- a/src/main/java/com/zipcodewilmington/streams/StreamFilter.java +++ b/src/main/java/com/zipcodewilmington/streams/StreamFilter.java @@ -20,7 +20,7 @@ public class StreamFilter { * No arg constructor */ //TODO - construct person stream of 100 person objects; startingCharacter is a random capital letter public StreamFilter() { - this(Stream.empty(), null); + this(new PersonFactory().createPersonStream(100), RandomUtils.createCharacter('A', 'Z')); } /** @@ -28,7 +28,7 @@ public StreamFilter() { * @param startingCharacter - character to filter by */ //TODO public StreamFilter(Person[] people, Character startingCharacter) { - this(Stream.empty(), null); + this(Stream.of(people), startingCharacter); } /** @@ -36,7 +36,7 @@ public StreamFilter(Person[] people, Character startingCharacter) { * @param startingCharacter - character to filter by */ //TODO public StreamFilter(List people, Character startingCharacter) { - this(Stream.empty(), null); + this(people.stream(), startingCharacter); } @@ -55,7 +55,7 @@ public StreamFilter(Stream people, Character startingCharacter) { * @return a list of person object whose name starts with `this.startingCharacter` */ //TODO public List toListMultiLine() { - return null; + return this.personStream.filter(p -> p.getName().startsWith(startingCharacter)).collect(Collectors.toList()); } @@ -64,7 +64,7 @@ public List toListMultiLine() { * @return a list of person objects whose name starts with `this.startingCharacter` */ //TODO public List toListOneLine() { - return null; + return toListMultiLine(); } @@ -73,7 +73,7 @@ public List toListOneLine() { * @return an array of person object whose name starts with `this.startingCharacter` */ //TODO public Person[] toArrayOneLine() { - return null; + return toArrayMultiLine(); } @@ -82,7 +82,7 @@ public Person[] toArrayOneLine() { * @return an array of person object whose name starts with `this.startingCharacter` */ //TODO public Person[] toArrayMultiLine() { - return null; + return toListMultiLine().toArray(new Person[0]); } } diff --git a/src/main/java/com/zipcodewilmington/streams/StreamMap.java b/src/main/java/com/zipcodewilmington/streams/StreamMap.java index cf35024..af4c84b 100644 --- a/src/main/java/com/zipcodewilmington/streams/StreamMap.java +++ b/src/main/java/com/zipcodewilmington/streams/StreamMap.java @@ -18,7 +18,7 @@ public class StreamMap { * @return - a Stream of single characters */ //TODO public static Stream letters(String someWord) { - return null; + return Arrays.stream(someWord.split("")); } /** @@ -26,7 +26,8 @@ public static Stream letters(String someWord) { * @return - a Stream of several Streams of single characters */ //TODO public static Stream> wordsMap(String... someWords) { - return null; + return Arrays.stream(someWords).map(output -> letters(output)); + // could also be: return Arrays.stream(someWords).map(StreamMap::letters); } /** @@ -34,6 +35,7 @@ public static Stream> wordsMap(String... someWords) { * @return - a Stream of several Streams of single characters */ //TODO public static Stream wordsFlatMap(String... stringArray) { - return null; + return Arrays.stream(stringArray).flatMap(output -> letters(output)); + // could also be: return Arrays.stream(stringArray).flatMap(StreamMap::letters); } } \ No newline at end of file diff --git a/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java b/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java index 0a9d4d8..e417af0 100644 --- a/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java +++ b/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java @@ -3,6 +3,7 @@ import com.zipcodewilmington.streams.anthropoid.Person; import com.zipcodewilmington.streams.anthropoid.PersonFactory; +import java.lang.reflect.Array; import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; @@ -25,12 +26,12 @@ public ArrayConverter(int collectionSize) { //TODO public List toList() { - return null; + return Arrays.asList(super.objectSequence); } //TODO public Stream toStream() { - return null; + return Arrays.stream(super.objectSequence); } @Override diff --git a/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java b/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java index b64540b..892c6c5 100644 --- a/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java +++ b/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java @@ -3,6 +3,7 @@ import com.zipcodewilmington.streams.anthropoid.Person; import com.zipcodewilmington.streams.anthropoid.PersonFactory; +import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; import java.util.stream.Stream; @@ -29,11 +30,11 @@ public List toList() { //TODO public Stream toStream() { - return null; + return Arrays.stream(super.objectSequence.toArray(new Person[0])); } //TODO public Person[] toArray() { - return null; + return toList().toArray(new Person[0]); } } diff --git a/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java b/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java index 159d048..d651b13 100644 --- a/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java +++ b/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java @@ -25,16 +25,16 @@ public StreamConverter(int collectionSize) { // TODO public List toList() { - return null; + return personList; } // TODO public Stream toStream() { - return null; + return personList.stream(); } // TODO public Person[] toArray() { - return null; + return personList.toArray(new Person[0]); } }