Top Answers

1. How to make a new List in Java
   91 votes
2. Space-efficient algorithm for checking if strings with backspaces are equal?
   13 votes
3. How to remove multiple elements from Set/Map AND knowing which ones were removed?
   13 votes
4. How do I deal with null and duplicate values in a Java 8 Comparator?
   8 votes
5. Using Java 8 Streams' Collectors to increment value based of existing key/value pair
   7 votes