red black tree java

0 reply content: standard provisions in C ++ STL: * Map, ordered * Unordered_map: unordered. This refers to the difference between hashmap and map by means of the hash list. We know that hashmap is of average O (1) and map is of average O (lnN, in practice, is hashmap superior to map? There are several factors to consider: The memory efficiency of hashmap is lower than that of map, which is obvious. The search efficiency of map is very high in practice. For example, how many times does it ta

Double RotationSingle rotation sometimes occurs with a problem (as shown): (If the inner descendant node [K1] is too deep, moving it one-way will not solve the problem)So there's a double spin.Double rotation to the right:1. First take K1 as the axis, K1 and K2 rotate to the left;2. Then take K3 as the axis, K3 and rotate the K1 to the right;Implement//Right double rotate template Double rotation to the left:1. First Take K3 as the axis , K2 and K3 rotate to the right ;2. Then take K1 as the ax

Red and Black League study notes1Introductory Lesson:Penetration testing: It is found that the risk point is fully found, to find all the loopholes, must be completely swept, to discoverHacker testing: Just need to find some of the loopholes can get permission toAttack Mode:Web penetration is typically based on 80 portSQL injection:Upload vulnerability:XSS: (The victim is a user, not a server) does not dire

Java black box operation-automatic packing and unpacking, java black box operation packing When I was writing an Android project, it is estimated that the most skillful words are: 　　 List How easy it is to use ArrayList! At that time, I only knew that the angle brackets However, as I get tired of the brainless learn

Red/blue Spanning TreeTime limit:10000/2000 MS (java/others) Memory limit:131072/131072 K (java/others)Total submission (s): 979 Accepted Submission (s): 368Problem Descriptiongiven an undirected, unweighted, connected graph, where each edge is colored either blue or red, determ Ine whether a spanning

between the two cases.　　Some information is suggested. When synchronization is required, use Hashtable and vice versa with HashMap. However, due to the need, HashMap can be synchronized, HashMap function than hashtable many other functions, and it is not based on a stale class, so some people feel that in all cases, HashMap priority over Hashtable.Second, for the Java Collection frameworkThe comparison between them:

From here, we will be explaining the Java data structure, is it ready? Let ' s go~~The data structure model in Java can be divided into several parts:1. Linear structure2. Tree-shaped structure3. Graphic or mesh structureIn the next few chapters, we will explain these data structures separately, mainly through the way of Java