31. This concept of a circularly linked trie structure is similar to the concept of a threaded binary tree . 32. For binary trees the standard way of comparing their topology is to use the Robinson-Foulds metric. 33. They are not binary trees though-a directory could easily have 100 or more sub-directories. 34. Supported index types are binary tree , hash, bitmap, and R-tree ( spatial ). 35. The left paths of a binary tree are shown circled in blue in the diagram on the right. 36. In mathematics, what is termed " binary tree " can vary significantly from author to author. 37. Alternatively, upward links can be included in the child node data, as in a threaded binary tree . 38. Post-order traversal while deleting or freeing nodes and values can delete or free an entire binary tree . 39. This solution employs a self-referential data structure, and the binary tree can be finite or infinite. 40. As Ramism evolved, these characteristic binary trees , set up rigidly, were treated differently in various fields.
