PATRICIA Trie

Practical Algorithm to Retrieve Information Coded in Alphanumeric

"A radix tree, Patricia trie/tree, or crit bit tree is a specialized set data structure based on the trie that is used to store a set of strings. In contrast with a regular trie, the edges of a Patricia trie are labelled with sequences of characters rather than with single characters. These can be strings of characters, bit strings such as integers or IP addresses, or generally arbitrary sequences of objects in lexicographical order. Sometimes the names radix tree and crit bit tree are only applied to trees storing integers and Patricia trie is retained for more general inputs, but the structure works the same way in all cases." -- Wikipedia