From 501ccf01f2a14ffc9195933f1ce55c7f65b27adf Mon Sep 17 00:00:00 2001
From: YuCheng Hu <huyuchengus@gmail.com>
Date: Sun, 1 May 2022 11:06:15 -0400
Subject: [PATCH] =?UTF-8?q?Java=20=E4=BB=8E=E4=B8=80=E4=B8=AA=20List=20?=
 =?UTF-8?q?=E4=B8=AD=E5=88=A0=E9=99=A4=E6=89=80=E6=9C=89=E9=87=8D=E5=A4=8D?=
 =?UTF-8?q?=E7=9A=84=E5=85=83=E7=B4=A0=EF=BC=9A=20https://www.ossez.com/t/?=
 =?UTF-8?q?java-list/13942?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .idea/workspace.xml                           | 56 +++++++++-------
 .../JavaCollectionCleanupDuplicatesTest.java  | 64 +++++++++++++++++++
 .../JavaCollectionCleanupUnitTest.java        |  2 +-
 .../java8/Java8CollectionCleanupUnitTest.java | 11 +++-
 4 files changed, 109 insertions(+), 24 deletions(-)
 create mode 100644 core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupDuplicatesTest.java

diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index 7d29ea9548..f7c0330843 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -4,9 +4,10 @@
     <option name="autoReloadType" value="SELECTIVE" />
   </component>
   <component name="ChangeListManager">
-    <list default="true" id="080575e3-7e62-4649-ae70-06fb6130a866" name="Changes" comment="init submit all for code branch">
+    <list default="true" id="080575e3-7e62-4649-ae70-06fb6130a866" name="Changes" comment="添加文章链接： https://www.ossez.com/t/java-list-null/13940">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
-      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/README.md" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/README.md" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java" beforeDir="false" afterPath="$PROJECT_DIR$/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
     <option name="HIGHLIGHT_CONFLICTS" value="true" />
@@ -62,8 +63,11 @@
       <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules\core-java-collections-list\src\test\resources" />
       <recent name="D:\WorkDir\Repository\GitHub\cwiki-us-docs\java-tutorials\core-java-modules\core-java-collections-list\src\test" />
     </key>
+    <key name="CopyClassDialog.RECENTS_KEY">
+      <recent name="com.ossez.collections" />
+    </key>
   </component>
-  <component name="RunManager" selected="JUnit.JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect">
+  <component name="RunManager" selected="JUnit.JavaCollectionCleanupUnitTest.givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect">
     <configuration default="true" type="DjangoTestsConfigurationType">
       <module name="junit-5-basics" />
       <option name="INTERPRETER_OPTIONS" value="" />
@@ -103,6 +107,22 @@
       <framework value="gotest" />
       <method v="2" />
     </configuration>
+    <configuration name="JavaCollectionCleanupUnitTest.givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
+      <module name="core-java-collections-list" />
+      <extension name="coverage">
+        <pattern>
+          <option name="PATTERN" value="com.ossez.collections.*" />
+          <option name="ENABLED" value="true" />
+        </pattern>
+      </extension>
+      <option name="PACKAGE_NAME" value="com.ossez.collections" />
+      <option name="MAIN_CLASS_NAME" value="com.ossez.collections.JavaCollectionCleanupUnitTest" />
+      <option name="METHOD_NAME" value="givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect" />
+      <option name="TEST_OBJECT" value="method" />
+      <method v="2">
+        <option name="Make" enabled="true" />
+      </method>
+    </configuration>
     <configuration name="JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
       <module name="core-java-collections-list" />
       <extension name="coverage">
@@ -167,22 +187,6 @@
         <option name="Make" enabled="true" />
       </method>
     </configuration>
-    <configuration name="RandomListElementUnitTest.givenList_whenSeriesLengthChosen_shouldReturnRandomSeries" type="JUnit" factoryName="JUnit" temporary="true" nameIsGenerated="true">
-      <module name="core-java-collections-list" />
-      <extension name="coverage">
-        <pattern>
-          <option name="PATTERN" value="com.ossez.list.random.*" />
-          <option name="ENABLED" value="true" />
-        </pattern>
-      </extension>
-      <option name="PACKAGE_NAME" value="com.ossez.list.random" />
-      <option name="MAIN_CLASS_NAME" value="com.ossez.list.random.RandomListElementUnitTest" />
-      <option name="METHOD_NAME" value="givenList_whenSeriesLengthChosen_shouldReturnRandomSeries" />
-      <option name="TEST_OBJECT" value="method" />
-      <method v="2">
-        <option name="Make" enabled="true" />
-      </method>
-    </configuration>
     <configuration default="true" type="JetRunConfigurationType">
       <module name="junit-5-basics" />
       <method v="2">
@@ -292,11 +296,11 @@
     </configuration>
     <recent_temporary>
       <list>
+        <item itemvalue="JUnit.JavaCollectionCleanupUnitTest.givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect" />
         <item itemvalue="JUnit.JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithGuavaV1_thenCorrect" />
         <item itemvalue="JUnit.JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithPlainJavaAlternative_thenCorrect" />
         <item itemvalue="JUnit.JavaCollectionCleanupUnitTest.givenListContainsNulls_whenRemovingNullsWithPlainJava_thenCorrect" />
         <item itemvalue="JUnit.RandomListElementUnitTest.givenList_whenRandomIndexChosen_shouldReturnARandomElementUsingMathRandom" />
-        <item itemvalue="JUnit.RandomListElementUnitTest.givenList_whenSeriesLengthChosen_shouldReturnRandomSeries" />
       </list>
     </recent_temporary>
   </component>
@@ -425,7 +429,14 @@
       <option name="project" value="LOCAL" />
       <updated>1651361573106</updated>
     </task>
-    <option name="localTasksCounter" value="17" />
+    <task id="LOCAL-00017" summary="添加文章链接： https://www.ossez.com/t/java-list-null/13940">
+      <created>1651415236464</created>
+      <option name="number" value="00017" />
+      <option name="presentableId" value="LOCAL-00017" />
+      <option name="project" value="LOCAL" />
+      <updated>1651415236464</updated>
+    </task>
+    <option name="localTasksCounter" value="18" />
     <servers />
   </component>
   <component name="TypeScriptGeneratedFilesManager">
@@ -459,7 +470,8 @@
     <MESSAGE value="格式化代码并修改错误" />
     <MESSAGE value="提交所有代码，为将默认分支名从 master 切换到 main 做准备" />
     <MESSAGE value="init submit all for code branch" />
-    <option name="LAST_COMMIT_MESSAGE" value="init submit all for code branch" />
+    <MESSAGE value="添加文章链接： https://www.ossez.com/t/java-list-null/13940" />
+    <option name="LAST_COMMIT_MESSAGE" value="添加文章链接： https://www.ossez.com/t/java-list-null/13940" />
   </component>
   <component name="XDebuggerManager">
     <breakpoint-manager>
diff --git a/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupDuplicatesTest.java b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupDuplicatesTest.java
new file mode 100644
index 0000000000..e02be9bb42
--- /dev/null
+++ b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupDuplicatesTest.java
@@ -0,0 +1,64 @@
+package com.ossez.collections;
+
+import com.google.common.base.Predicates;
+import com.google.common.collect.Iterables;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Sets;
+import org.apache.commons.collections4.CollectionUtils;
+import org.apache.commons.collections4.PredicateUtils;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.TestInstance;
+
+import java.util.*;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.*;
+
+/**
+ * Test for list Clean up
+ *
+ * <p><a href="https://www.ossez.com/t/java-list/13942">https://www.ossez.com/t/java-list/13942</a></p>
+ *
+ * @author YuCheng
+ */
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
+public class JavaCollectionCleanupDuplicatesTest {
+
+    // TESTS - REMOVE DUPLICATES
+
+    @Test
+    public void givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect() {
+        final List<Integer> listWithDuplicates = Lists.newArrayList(5, 0, 3, 1, 2, 3, 0, 0);
+        final List<Integer> listWithoutDuplicates = new ArrayList<>(new HashSet<>(listWithDuplicates));
+
+        assertThat(listWithoutDuplicates, hasSize(5));
+        assertThat(listWithoutDuplicates, containsInAnyOrder(5, 0, 3, 1, 2));
+    }
+
+    @Test
+    public void givenListContainsDuplicates_whenRemovingDuplicatesPreservingOrderWithPlainJava_thenCorrect() {
+        final List<Integer> listWithDuplicates = Lists.newArrayList(5, 0, 3, 1, 2, 3, 0, 0);
+        final List<Integer> listWithoutDuplicates = new ArrayList<>(new LinkedHashSet<>(listWithDuplicates));
+
+        assertThat(listWithoutDuplicates, hasSize(5));
+        assertThat(listWithoutDuplicates, containsInRelativeOrder(5, 0, 3, 1, 2));
+    }
+
+    @Test
+    public void givenListContainsDuplicates_whenRemovingDuplicatesWithGuava_thenCorrect() {
+        final List<Integer> listWithDuplicates = Lists.newArrayList(5, 0, 3, 1, 2, 3, 0, 0);
+        final List<Integer> listWithoutDuplicates = Lists.newArrayList(Sets.newHashSet(listWithDuplicates));
+
+        assertThat(listWithoutDuplicates, hasSize(5));
+        assertThat(listWithoutDuplicates, containsInAnyOrder(5, 0, 3, 1, 2));
+    }
+
+    @Test
+    public void givenListContainsDuplicates_whenRemovingDuplicatesPreservingOrderWithGuava_thenCorrect() {
+        final List<Integer> listWithDuplicates = Lists.newArrayList(5, 0, 3, 1, 2, 3, 0, 0);
+        final List<Integer> listWithoutDuplicates = Lists.newArrayList(Sets.newLinkedHashSet(listWithDuplicates));
+
+        assertThat(listWithoutDuplicates, hasSize(5));
+        assertThat(listWithoutDuplicates, containsInRelativeOrder(5, 0, 3, 1, 2));
+    }
+}
diff --git a/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java
index fe746b2dd0..a6b7192f92 100644
--- a/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java
+++ b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/collections/JavaCollectionCleanupUnitTest.java
@@ -71,7 +71,7 @@ public class JavaCollectionCleanupUnitTest {
         assertThat(list, hasSize(3));
     }
 
-    // tests - remove duplicates
+    // TESTS - REMOVE DUPLICATES
 
     @Test
     public void givenListContainsDuplicates_whenRemovingDuplicatesWithPlainJava_thenCorrect() {
diff --git a/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java
index 6a131da3c1..96a123f7f4 100644
--- a/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java
+++ b/core-java-modules/core-java-collections-list/src/test/java/com/ossez/java8/Java8CollectionCleanupUnitTest.java
@@ -2,15 +2,24 @@ package com.ossez.java8;
 
 import com.google.common.collect.Lists;
 import org.junit.Test;
+import org.junit.jupiter.api.TestInstance;
 
 import java.util.List;
 import java.util.Objects;
 import java.util.stream.Collectors;
 
+import static org.hamcrest.MatcherAssert.assertThat;
 import static org.hamcrest.Matchers.containsInAnyOrder;
 import static org.hamcrest.Matchers.hasSize;
-import static org.junit.Assert.assertThat;
 
+/**
+ * Test for list Clean up
+ *
+ * <p><a href="https://www.ossez.com/t/java-list/13942">https://www.ossez.com/t/java-list/13942</a></p>
+ *
+ * @author YuCheng
+ */
+@TestInstance(TestInstance.Lifecycle.PER_CLASS)
 public class Java8CollectionCleanupUnitTest {
 
     // tests -