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..b3231bf 100644
--- a/src/main/java/com/zipcodewilmington/streams/StreamFilter.java
+++ b/src/main/java/com/zipcodewilmington/streams/StreamFilter.java
@@ -5,7 +5,9 @@
import com.zipcodewilmington.streams.tools.RandomUtils;
import com.zipcodewilmington.streams.tools.StringUtils;
+import java.util.Date;
import java.util.List;
+import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@@ -20,7 +22,8 @@ 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);
+ startingCharacter = RandomUtils.createString('a', 'z', 1);
+ personStream = Stream.generate(() -> new Person("", false, 0L, new Date(), "Bill")).limit(100);
}
/**
@@ -28,7 +31,9 @@ public StreamFilter() {
* @param startingCharacter - character to filter by
*/ //TODO
public StreamFilter(Person[] people, Character startingCharacter) {
- this(Stream.empty(), null);
+ this.startingCharacter = startingCharacter.toString();
+ personStream = Stream.of(people)
+ .filter((person) -> person.getName().contains(this.startingCharacter));
}
/**
@@ -36,7 +41,9 @@ public StreamFilter(Person[] people, Character startingCharacter) {
* @param startingCharacter - character to filter by
*/ //TODO
public StreamFilter(List people, Character startingCharacter) {
- this(Stream.empty(), null);
+ this.startingCharacter = startingCharacter.toString();
+ personStream = people.stream()
+ .filter((person) -> person.getName().contains(this.startingCharacter));
}
@@ -55,7 +62,13 @@ public StreamFilter(Stream people, Character startingCharacter) {
* @return a list of person object whose name starts with `this.startingCharacter`
*/ //TODO
public List toListMultiLine() {
- return null;
+ Predicate predicate = (person) -> {
+ if (person.getName().startsWith(this.startingCharacter)) {
+ return true;
+ }
+ return false;
+ };
+ return personStream.filter(predicate).collect(Collectors.toList());
}
@@ -64,7 +77,9 @@ public List toListMultiLine() {
* @return a list of person objects whose name starts with `this.startingCharacter`
*/ //TODO
public List toListOneLine() {
- return null;
+ return personStream
+ .filter((person) -> person.getName().startsWith(this.startingCharacter))
+ .collect(Collectors.toList());
}
@@ -73,7 +88,9 @@ 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) -> person.getName().startsWith(this.startingCharacter))
+ .toArray(Person[]::new);
}
@@ -82,7 +99,13 @@ public Person[] toArrayOneLine() {
* @return an array of person object whose name starts with `this.startingCharacter`
*/ //TODO
public Person[] toArrayMultiLine() {
- return null;
+ Predicate predicate = (person) -> {
+ if (person.getName().startsWith(this.startingCharacter)) {
+ return true;
+ }
+ return false;
+ };
+ return personStream.filter(predicate).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..0d64cb5 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 +26,7 @@ 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((string) -> Stream.of(string));
}
/**
@@ -34,6 +34,6 @@ 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);
}
}
\ 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..55dbe4b 100644
--- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java
+++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonFactory.java
@@ -3,8 +3,11 @@
import com.zipcodewilmington.streams.tools.RandomUtils;
import com.zipcodewilmington.streams.tools.StringUtils;
+import java.util.ArrayList;
+import java.util.Collections;
import java.util.Date;
import java.util.List;
+import java.util.function.Supplier;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@@ -39,7 +42,7 @@ public Person createRandomPerson() {
* @return - ArrayList of Person objects
*/ // TODO
public List createPersonList(int listSize) {
- return null;
+ return Stream.generate(() -> createRandomPerson()).limit(listSize).collect(Collectors.toList());
}
@@ -48,7 +51,7 @@ public List createPersonList(int listSize) {
* @return - Array of Person objects
*/ // TODO
public Person[] createPersonArray(int arrayLength) {
- return null;
+ return Stream.generate(() -> createRandomPerson()).limit(arrayLength).toArray(Person[]::new);
}
@@ -59,6 +62,6 @@ public Person[] createPersonArray(int arrayLength) {
* @return - Stream representation of collection of Person objects
*/ // TODO
public Stream createPersonStream(int streamCount) {
- return null;
+ return Stream.generate(() -> 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..267ad7a 100644
--- a/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java
+++ b/src/main/java/com/zipcodewilmington/streams/anthropoid/PersonWarehouse.java
@@ -4,10 +4,8 @@
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.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
@@ -36,7 +34,10 @@ public void addPerson(Person person) {
* @return list of names of Person objects
*/ // TODO
public List getNames() {
- return null;
+ List list = new ArrayList<>();
+ people.stream().forEach((person) -> list.add(person.getName()));
+ return list;
+
}
@@ -44,7 +45,18 @@ public List getNames() {
* @return list of uniquely named Person objects
*/ //TODO
public Stream getUniquelyNamedPeople() {
- return null;
+ List listOfUniqueNames = people.stream()
+ .map((person) -> person.getName())
+ .distinct()
+ .collect(Collectors.toList());
+ return people.stream()
+ .filter((person) -> {
+ if (listOfUniqueNames.contains(person.getName())) {
+ listOfUniqueNames.remove(person.getName());
+ return true;
+ }
+ return false;
+ });
}
@@ -53,7 +65,7 @@ public Stream getUniquelyNamedPeople() {
* @return a Stream of respective
*/ //TODO
public Stream getUniquelyNamedPeopleStartingWith(Character character) {
- return null;
+ return people.stream().filter((firstLetterOfName) -> firstLetterOfName.equals(character));
}
/**
@@ -61,14 +73,28 @@ public Stream getUniquelyNamedPeopleStartingWith(Character character) {
* @return a Stream of respective
*/ //TODO
public Stream getFirstNUniquelyNamedPeople(int n) {
- return null;
+ List listOfUniqueNames = people.stream()
+ .map((person) -> person.getName())
+ .distinct()
+ .collect(Collectors.toList());
+ return people.stream()
+ .filter((person) -> {
+ if (listOfUniqueNames.contains(person.getName())) {
+ listOfUniqueNames.remove(person.getName());
+ return true;
+ }
+ return false;
+ })
+ .limit(n);
}
/**
* @return a mapping of Person Id to the respective Person name
*/ // TODO
public Map getIdToNameMap() {
- return null;
+ Map map = new HashMap<>();
+ people.stream().forEach((person) -> map.put(person.getPersonalId(), person.getName()));
+ return map;
}
@@ -76,7 +102,8 @@ public Map getIdToNameMap() {
* @return Stream of Stream of Aliases
*/ // TODO
public Stream> getNestedAliases() {
- return null;
+ Stream nestedStream = people.stream().map((person) -> person.getAliases().toString());
+ return Stream.of(nestedStream);
}
@@ -84,7 +111,7 @@ public Stream> getNestedAliases() {
* @return Stream of all Aliases
*/ // TODO
public Stream getAllAliases() {
- return null;
+ return people.stream().map((person) -> person.getAliases().toString());
}
// 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..4ef1d06 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 Stream.of(super.objectSequence).collect(Collectors.toList());
}
//TODO
public Stream toStream() {
- return null;
+ return Stream.of(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..80fc30c 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 super.objectSequence.stream();
}
//TODO
public Person[] toArray() {
- return null;
+ return super.objectSequence.stream().toArray(Person[]::new);
}
}
diff --git a/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java b/src/main/java/com/zipcodewilmington/streams/conversions/StreamConverter.java
index 159d048..94b7a73 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.stream().toArray(Person[]::new);
}
}