Directory Data structure (red-black tree) red and black rules Red-black tree adding node rules set set summary HashSet Three problems with HashSet LinkedHashSet summary TreeSet TreeSet collection default rules Sorting rules (first sorting method) Method 2 practise Xiaolian Summarize Summary: How to choose when using collections Data structure (red-black tree) Red and black rules The […]
Tag: treeset
JAVA-Day52In-depth analysis of Java TreeSet collection
In-depth analysis of Java TreeSet collection **In-depth analysis of Java TreeSet collection** **Summary** **introduction** **1. Preliminary exploration of TreeSet** **2. Use TreeSet collection** **3. What’s special about TreeSet** **4. Best practices and performance optimization** **5. In-depth understanding of TreeSet** **5.1 Underlying data structure and red-black tree** **5.2 Functions of NavigableSet interface** **5.3 Implement Comparable interface […]
Duplicate values of the HashSet class and TreeSet class corresponding to the Set collection
Regarding the HashSet class, this is a question I had after reading an official code writing method when I was brushing leetcode. I couldn’t find the answer on the Internet, and finally found the answer in the API: Why can’t I find the answer online? What was shown was that HasSet cannot store duplicate elements […]
[Set collection in java] HashSet, LinkedHashSet, TreeSet (the most understandable version!!)
Table of Contents 1. HashSet collection 1. Characteristics of HashSet collection 2. Common methods of HashSet 2. LinkedHashSet collection Characteristics of LinkedHashSet collection 3. TreeSet collection 1. Characteristics of TreeSet collection 2.Basic use of TreeSet 4. Usage scenarios of HashSet, LinkedHashSet, and TreeSet 5. The difference between list and set collections 1. HashSet collection 1.Characteristics […]
[Set] Set collection ordered and unordered test cases: HashSet, TreeSet, LinkedHashSet (122)
Common Set collections: HashSet, TreeSe, LinkedHashSet The connection between the three: (1) HashSet and TreeSet are two typical implementations of Set, and LinkedHashSet is the implementation class of HashSet. Simply put, the performance of HashSet is always better than that of TreeSet (especially the most commonly used operations such as adding and querying elements), because […]
Java Set collection: HashSet and TreeSet classes
The Set collection is similar to a jar. The program can “throw” multiple objects into the Set collection in turn, and the Set collection usually cannot remember the order in which elements were added. That is to say, the objects in the Set collection are not sorted in a specific way, but the objects are […]
June 11, 2023, TreeSet, Comparable, HashMap
1. Set 1. TreeSet TreeSet 1. Store the elements of Integer in ascending order 2. Store the elements of String and arrange them in a dictionary TreeSet uses different sorting rules according to different types of elements public class test01 { /** * Knowledge points: TreeSet * 1. Store the elements of Integer in ascending […]
Chapter 8 Single Column Collection Collection List ArrayList LinkedList Set HashSet TreeSet
Directory 1. Collection interface 2. List interface 2.1ArrayList implementation class ArrayList generic usage ArrayList sorting 2.2 LinkedList implementation class LinkedList usage 3. Set interface 3.1 HashSet Set collection traversal Eliminate the weight of the List collection 3.2TreeSet 1.Collection interface java.util.Collection is the parent interface of all single-column collections, so some methods common to single-column collections […]
TreeMap and TreeSet
When it comes to TreeMap and TreeSet, let’s first understand what their underlying layer is implemented. By viewing the source code of Java, we know that their underlying layer is implemented by a binary search tree, so let’s first understand the binary search tree A binary search tree, also known as a binary sort tree, […]
Anatomy of HashSet and TreeSet
Analysis of HashSet and TreeSet HashSet The underlying implementation of HashSet storage rules How to determine if two elements are repeated in conclusion treeSet The underlying implementation of treeSet storage rules How to achieve order in conclusion Set focuses on the unique nature. This system set can know whether something is already in the set. […]