modify imports

.gradle/buildOutputCleanup/cache.properties

@@ -0,0 +1,2 @@
+#Wed Nov 18 16:09:32 EAT 2020
+gradle.version=6.7.1

build/tmp/compileJava/source-classes-mapping.txt

@@ -0,0 +1,4 @@
+models/PingPong.java
+ models.PingPong
+App.java
+ App

src/main/java/App.java

@@ -1,3 +1,24 @@
-public class App {
+import models.PingPong;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.ArrayList;
 
-}
+public class App {
+    public static void main(String[] args) {
+        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in));
+        System.out.println("I'm a ping-pong application!");
+        System.out.println("Enter a number:");
+        try {
+            String stringUserNumber = bufferedReader.readLine();
+            int intUserNumber = Integer.parseInt(stringUserNumber);
+            PingPong pingPong = new PingPong();
+            ArrayList<Object> pingPongResult = pingPong.runPingPong(intUserNumber);
+            System.out.println(pingPongResult);
+        }
+        catch (IOException e){
+            e.printStackTrace();
+        }
+    }
+}

src/main/java/models/PingPong.java

@@ -1,12 +1,25 @@
 package models;
 
+
 import java.util.ArrayList;
 import java.util.List;
 
 public class PingPong {
 
     public ArrayList<Object> runPingPong(int countUpTo){
         ArrayList<Object> result = new ArrayList<Object>();
-        return null;
+        for (int i = 1; i <= countUpTo; i++){
+            if (i % 3 == 0 && i % 5 == 0){
+                result.add("pingpong");
+            } else if (i % 3 == 0){
+                result.add("ping");
+            } else if (i % 5 == 0){
+                result.add("pong");
+            } else {
+                result.add(i);
+            }
+        }
+        return result;
     }
+
 }

src/test/java/AppTest.java

@@ -0,0 +1,5 @@
+import static org.junit.Assert.*;
+
+public class AppTest {
+
+}