refactor classes according to checkstyle

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Exchange.java

@@ -136,8 +136,11 @@ public void advance() {
    * @return a list of stocks sorted by price change
    */
   public List<Stock> getGainers(int limit) {
-    return stockMap.values().stream().sorted((a, b) -> b.getLatestPriceChange()
-        .compareTo(a.getLatestPriceChange())).limit(limit).toList();
+    return stockMap.values().stream()
+            .sorted((a, b) -> b.getLatestPriceChange()
+            .compareTo(a.getLatestPriceChange()))
+            .limit(limit)
+            .toList();
   }
 
   /**
@@ -147,7 +150,10 @@ public List<Stock> getGainers(int limit) {
    * @return a list of stocks sorted by price change
    */
   public List<Stock> getLosers(int limit) {
-    return stockMap.values().stream().sorted((a, b) -> a.getLatestPriceChange()
-        .compareTo(b.getLatestPriceChange())).limit(limit).toList();
+    return stockMap.values().stream()
+            .sorted((a, b) -> a.getLatestPriceChange()
+            .compareTo(b.getLatestPriceChange()))
+            .limit(limit)
+            .toList();
   }
 }

src/main/java/edu/ntnu/idi/idatt2003/gruppe42/Model/Player.java

@@ -95,11 +95,9 @@ public Status getStatus() {
 
     if (isSpeculator) {
       return Status.SPECULATOR;
-    }
-    else if (isInvestor) {
+    } else if (isInvestor) {
       return Status.INVESTOR;
-    }
-    else {
+    } else {
       return Status.NOVICE;
     }
   }