diff --git a/.idea/$PRODUCT_WORKSPACE_FILE$ b/.idea/$PRODUCT_WORKSPACE_FILE$
new file mode 100644
index 0000000..9fba8c6
--- /dev/null
+++ b/.idea/$PRODUCT_WORKSPACE_FILE$
@@ -0,0 +1,30 @@
+
+
+
+
+
+
+ 1.8.0_201
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..2bb69ef
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..3e62a0b
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,13 @@
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..5103107
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/PlaylistChallenge.iml b/PlaylistChallenge.iml
new file mode 100644
index 0000000..0ddf51c
--- /dev/null
+++ b/PlaylistChallenge.iml
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/src/main/java/io/zipcoder/Music.java b/src/main/java/io/zipcoder/Music.java
index 180c65c..4f72e27 100644
--- a/src/main/java/io/zipcoder/Music.java
+++ b/src/main/java/io/zipcoder/Music.java
@@ -9,6 +9,39 @@ public Music(String[] playList){
}
public Integer selection(Integer startIndex, String selection){
- return null;
+ int clickUp = 0;
+ int clickDown = 0;
+
+ //move forward through the array
+ for(int i = startIndex ; i <= playList.length; i++){
+
+ if(playList[i].equals(selection)){
+ break;
+ }
+ clickUp++;
+ /*if we get to the end of the playlist and don't find our song, we'll have to
+ start at the other end and keep on counting, bewaring of an infinite loop
+ */
+ if (i == (playList.length - 1)) {
+ i = -1;
+ }
+ }
+
+ //move backwards through the array
+ for(int j = startIndex; j >= 0 ; j--){
+
+ if(playList[j].equals(selection)){
+ break;
+ }
+ clickDown++;
+ if (j == 0) {
+ j = playList.length;
+ }
+ }
+
+ //return whichever counter is smaller
+ //Math.min was auto-suggested from an if statement
+ //it will return the smaller number
+ return Math.min(clickUp, clickDown);
}
}
diff --git a/src/test/java/io/zipcoder/MusicTest.java b/src/test/java/io/zipcoder/MusicTest.java
index 03ede61..9a9ce71 100644
--- a/src/test/java/io/zipcoder/MusicTest.java
+++ b/src/test/java/io/zipcoder/MusicTest.java
@@ -6,9 +6,9 @@
public class MusicTest {
@Test
- public void selectionTest1(){
+ public void selectionTest1() {
- String[] playlist = {"wheniseeyouagain","borntorun","nothingelsematters","cecelia"};
+ String[] playlist = {"wheniseeyouagain", "borntorun", "nothingelsematters", "cecelia"};
Music music = new Music(playlist);
Integer startingIndex = 1;
String selection = "cecelia";
@@ -18,9 +18,9 @@ public void selectionTest1(){
}
@Test
- public void selectionTest2(){
+ public void selectionTest2() {
- String[] playlist = {"dancinginthedark","rio","liveoak","liveoak"};
+ String[] playlist = {"dancinginthedark", "rio", "liveoak", "liveoak"};
Music music = new Music(playlist);
Integer startingIndex = 0;
String selection = "liveoak";
@@ -28,4 +28,46 @@ public void selectionTest2(){
Integer actual = music.selection(startingIndex, selection);
Assert.assertEquals(expected, actual);
}
+
+ @Test
+ public void selectionTest3() {
+
+ String[] playlist = {"heyjude", "inmylife", "letitbe", "ijustseenaface",
+ "isawherstandingthere", "tickettoride", "help", "paperbackwriter", "harddaysnight"};
+ Music music = new Music(playlist);
+ Integer startingIndex = 2;
+ String selection = "tickettoride";
+ Integer expected = 3;
+ Integer actual = music.selection(startingIndex, selection);
+ Assert.assertEquals(expected, actual);
+ }
+
+ //test to wrap around the bottom of the array
+ @Test
+ public void selectionTest4() {
+
+ String[] playlist = {"bohemianrhapsody", "killerqueen", "fatbottomedgirls", "underpressure",
+ "iwantobreakfree", "somebodytolove", "flashgordontheme", "crazylittlethingcalledlove", "wearethechampions"};
+ Music music = new Music(playlist);
+ Integer startingIndex = 1;
+ String selection = "crazylittlethingcalledlove";
+ Integer expected = 3;
+ Integer actual = music.selection(startingIndex, selection);
+ Assert.assertEquals(expected, actual);
+ }
+
+
+ //test to wrap around the top of the array
+ @Test
+ public void selectionTest5() {
+ String[] playlist = {"tinydancer", "downtletthesungodownonme", "yoursong", "saturday",
+ "bennyandthejets", "crocodilerock"};
+ Music music = new Music(playlist);
+ Integer startingIndex = 5;
+ String selection = "tinydancer";
+ Integer expected = 1;
+ Integer actual = music.selection(startingIndex, selection);
+ Assert.assertEquals(expected, actual);
+ }
}
+
diff --git a/target/classes/io/zipcoder/Music.class b/target/classes/io/zipcoder/Music.class
new file mode 100644
index 0000000..23c2df4
Binary files /dev/null and b/target/classes/io/zipcoder/Music.class differ
diff --git a/target/test-classes/io/zipcoder/MusicTest.class b/target/test-classes/io/zipcoder/MusicTest.class
new file mode 100644
index 0000000..7e4446c
Binary files /dev/null and b/target/test-classes/io/zipcoder/MusicTest.class differ