working in the count()

src/main/java/Main.java

@@ -1,17 +1,32 @@
 import org.apache.commons.io.IOUtils;
 import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
 
-public class Main {
+public class Main  {
 
-    public String readRawDataToString() throws Exception{
+    public String readRawDataToString() throws Exception {
         ClassLoader classLoader = getClass().getClassLoader();
         String result = IOUtils.toString(classLoader.getResourceAsStream("RawData.txt"));
         return result;
     }
 
-    public static void main(String[] args) throws Exception{
+    public static void main(String[] args) throws Exception {
         String output = (new Main()).readRawDataToString();
         System.out.println(output);
 
     }
-}
+
+
+    // count() how many time I see the item and the prices.
+    public static Integer counter(List<String> prices) {
+        ArrayList<String> counts = new ArrayList<>();
+        for (int i = 0; i < prices.size(); i++) {
+          if(pr)
+
+
+        }
+        return null;
+    }
+}