diff --git a/looptest.iml b/looptest.iml
index 7f2d304..e34277e 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/StreamFilter.java b/src/main/java/com/zipcodewilmington/streams/StreamFilter.java
index d8b89ae..7130c96 100644
--- a/src/main/java/com/zipcodewilmington/streams/StreamFilter.java
+++ b/src/main/java/com/zipcodewilmington/streams/StreamFilter.java
@@ -5,6 +5,9 @@
import com.zipcodewilmington.streams.tools.RandomUtils;
import com.zipcodewilmington.streams.tools.StringUtils;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@@ -20,7 +23,13 @@ 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);
+ PersonFactory pf = new PersonFactory();
+ List personList = new ArrayList<>();
+ Collections.nCopies(100, 1)
+ .stream()
+ .forEach(i -> personList.add(pf.createRandomPerson()));
+ personStream = personList.stream();
+ startingCharacter = RandomUtils.createCharacter('A', 'Z').toString();
}
/**
@@ -28,7 +37,7 @@ public StreamFilter() {
* @param startingCharacter - character to filter by
*/ //TODO
public StreamFilter(Person[] people, Character startingCharacter) {
- this(Stream.empty(), null);
+ this(Arrays.stream(people), startingCharacter);
}
/**
@@ -36,7 +45,7 @@ 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 +64,8 @@ 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 personStream.filter(person -> startingCharacter.equals(person.getName().charAt(0)))
+ .collect(Collectors.toList());
}
@@ -64,7 +74,7 @@ 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 +83,8 @@ public List toListOneLine() {
* @return an array of person object whose name starts with `this.startingCharacter`
*/ //TODO
public Person[] toArrayOneLine() {
- return null;
+ return personStream.filter(person -> startingCharacter.equals(person.getName().charAt(0)))
+ .toArray(Person[]::new);
}
@@ -82,7 +93,7 @@ public Person[] toArrayOneLine() {
* @return an array of person object whose name starts with `this.startingCharacter`
*/ //TODO
public Person[] toArrayMultiLine() {
- return null;
+ return personStream.filter(person -> startingCharacter.equals(person.getName().charAt(0)))
+ .toArray(Person[]::new);
}
-
}
diff --git a/src/main/java/com/zipcodewilmington/streams/StreamMap.java b/src/main/java/com/zipcodewilmington/streams/StreamMap.java
index cf35024..1fe7aaa 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 Stream.of(someWord);
}
/**
@@ -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 Stream.of(someWords)
+ .map(word -> Arrays.stream(someWords));
}
/**
@@ -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 Stream.of(stringArray)
+ .flatMap(word -> Arrays.stream(stringArray));
}
}
\ 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..1ddd50f 100644
--- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java
+++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java
@@ -3,6 +3,8 @@
import com.zipcodewilmington.streams.tools.RandomUtils;
import com.zipcodewilmington.streams.tools.StringUtils;
+import java.util.ArrayList;
+import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.stream.Collectors;
@@ -39,7 +41,10 @@ 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 +53,10 @@ 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)
+ .collect(Collectors.toList()).toArray(new Person[0]);
}
@@ -59,6 +67,8 @@ 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..984add7 100644
--- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java
+++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java
@@ -4,10 +4,7 @@
import com.zipcodewilmington.streams.tools.logging.LoggerHandler;
import com.zipcodewilmington.streams.tools.logging.LoggerWarehouse;
-import java.util.ArrayList;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Map;
+import java.util.*;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@@ -36,7 +33,10 @@ 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 +44,21 @@ public List getNames() {
* @return list of uniquely named Person objects
*/ //TODO
public Stream getUniquelyNamedPeople() {
- return null;
+ List namesList = getNames()
+ .stream()
+ .distinct()
+ .collect(Collectors.toList());
+ List uniquelyNamePeople = new ArrayList<>();
+
+ people.stream()
+ .forEach(person ->{
+ if(namesList.contains(person.getName())){
+ uniquelyNamePeople.add(person);
+ namesList.remove(person.getName());
+ }
+ });
+ Stream resultStream = uniquelyNamePeople.stream();
+ return resultStream;
}
@@ -53,7 +67,8 @@ public Stream getUniquelyNamedPeople() {
* @return a Stream of respective
*/ //TODO
public Stream getUniquelyNamedPeopleStartingWith(Character character) {
- return null;
+ // maybe this work?
+ return getUniquelyNamedPeople().filter(x -> x.getName().charAt(0) == character);
}
/**
@@ -61,14 +76,15 @@ 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));
}
@@ -76,7 +92,7 @@ public Map getIdToNameMap() {
* @return Stream of Stream of Aliases
*/ // TODO
public Stream> getNestedAliases() {
- return null;
+ return Stream.of(getAllAliases());
}
@@ -84,7 +100,8 @@ public Stream> getNestedAliases() {
* @return Stream of all Aliases
*/ // TODO
public Stream getAllAliases() {
- return null;
+ return people.stream()
+ .flatMap(p -> Arrays.stream(p.getAliases()));
}
// DO NOT MODIFY
diff --git a/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java b/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java
index 0a9d4d8..275de36 100644
--- a/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java
+++ b/src/main/java/com/zipcodewilmington/streams/conversions/ArrayConverter.java
@@ -25,12 +25,12 @@ public ArrayConverter(int collectionSize) {
//TODO
public List toList() {
- return null;
+ return Arrays.asList(objectSequence);
}
//TODO
public Stream toStream() {
- return null;
+ return Stream.of(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..5a6a552 100644
--- a/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java
+++ b/src/main/java/com/zipcodewilmington/streams/conversions/ListConverter.java
@@ -29,11 +29,11 @@ public List toList() {
//TODO
public Stream toStream() {
- return null;
+ return objectSequence.stream();
}
//TODO
public Person[] toArray() {
- return null;
+ return objectSequence.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]);
}
}