abstract tree

Abstract synthesis is the same as the usual synthesis method, only when the idea of the leap of thought to a larger point, the combination of some irrelevant things, after the dissolution of the map, polishing and processing details, so that the

In web development, most of the Pull-down menus are on one line and up and down, which is good but lacks a hierarchy and the customer doesn't know the relationship between the options, so sometimes we need to display the dropdown in a tree structure

Data structure and algorithm (C # Implementation) Series---tree (i.) Heavenkiller (original) First we give the tree a definition: A tree is a finite, non-empty set of nodes. T={r} or T1 or T2 or...or Tn It has the following properties: 1. The node r

Data | structure | algorithm First we give the tree a definition: The tree is a finite, non-empty set of nodes, t={r} or T1 or T2 or...or TnIt has the following properties:1. The node r specified by the collection is called the root node of the tree2