Improved my backend challenge

submissions/ornitcg/SongCounter.java

@@ -0,0 +1,83 @@
+import java.io.*; 
+import java.util.InputMismatchException;
+import java.util.Map;
+import java.util.HashMap;
+
+public class SongCounter {
+
+    public static String mostCommon(HashMap<String,Integer> strMap){
+        int maxOccurence = 0;
+        String maxName = "";
+        for (Map.Entry<String, Integer> entry : strMap.entrySet()) {
+            String key = entry.getKey();
+            Integer value = entry.getValue();
+            // System.out.println("Key: " + key + ", Value: " + value);
+            if(value>maxOccurence){
+                maxOccurence= value;
+                maxName = key;
+            }
+        }
+        return maxName;
+    }
+
+
+
+
+
+
+    public static int findIndex(String str, String[] searchArray){
+        for (int i=0; i< searchArray.length ; i++){
+            if(searchArray[i].equals(str)){
+                return i;
+            }
+        }
+        return -1;
+    } //findIndex
+
+    public static void main(String[] args) {
+        String path = "./spotify-2023.csv";
+        try {
+            BufferedReader reader =new BufferedReader(new FileReader(path));
+            HashMap<String,Integer> artistOcc = new HashMap<String, Integer>();
+            String line = "";
+            line=reader.readLine();
+            String[] titles = line.trim().split(",");
+            int keyIndex= findIndex("key", titles);   
+            int artistIndex= findIndex("artist(s)_name", titles);            
+
+            int songsCounter = 0;
+            int eKeyCounter = 0;
+
+
+            while((line=reader.readLine())!=null){
+                songsCounter++;
+                String[] songData = line.trim().split(",");
+                if (songData[keyIndex].equals("E")){
+                    eKeyCounter++;
+                }
+                String artist = songData[artistIndex];
+                if(artistOcc.containsKey(artist)){
+                    artistOcc.put(artist, artistOcc.get(artist) + 1);
+                }
+                else{
+                    artistOcc.put(artist, 1);
+
+                }
+
+            }
+            String mostCommonArtist = mostCommon(artistOcc);
+
+            System.out.println("Number of songs: "+ songsCounter);
+            System.out.println("Number of songs with E key: "+ eKeyCounter);
+            System.out.println("The artist with the higest occurence is: " + mostCommonArtist + " with " + artistOcc.get(mostCommonArtist) + " tracks");
+
+
+
+
+        }
+        catch(Exception e){
+            System.out.println("csv failed to load");
+
+        }
+    }
+}