Clojure also has a built-in persistent red-black tree. https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/PersistentTreeMap.java https://githu

Clojure also has a built-in persistent red-black tree. https://github.com/clojure/clojure/blob/master/src/jvm/clojure/lang/PersistentTreeMap.java https://github.com/clojure/clojure/blob/master/src/jvm/cloju...