Java 8 migration, use method reference for more readable code.

Sangaibisi · Sangaibisi · commit c1612bdc51a7 · 2020-10-04T14:02:11.000+03:00
diff --git a/Others/TopKWords.java b/Others/TopKWords.java
@@ -70,7 +70,7 @@ public static void main(String[] args) {
 
         // sort by lambda valueComparator
         list.sort(Comparator.comparing(
-                m -> m.getValue())
+                Map.Entry::getValue)
         );
 
         Scanner input = new Scanner(System.in);
diff --git a/Sorts/CountingSort.java b/Sorts/CountingSort.java
@@ -56,7 +56,7 @@ public <T extends Comparable<T>> List<T> sort(List<T> list) {
      **/
     private static <T extends Comparable<T>> List<T> streamSort(List<T> list) {
         return list.stream()
-                .collect(toMap(k -> k, v -> 1, (v1, v2) -> v1 + v2, TreeMap::new))
+                .collect(toMap(k -> k, v -> 1, Integer::sum, TreeMap::new))
                 .entrySet()
                 .stream()
                 .flatMap(entry -> IntStream.rangeClosed(1, entry.getValue()).mapToObj(t -> entry.getKey()))
