Elasticsearch is an open-source search and analytics engine that allows users to store, search, and analyze large volumes of data in real-time. It is built on top of the Apache Lucene search library and provides a RESTful API for easy integration with other systems.
Elasticsearch is designed to be distributed, scalable, and highly available. It uses a sharding and replication model to distribute data across multiple nodes in a cluster, ensuring high performance and fault tolerance. It also supports various data types and formats, including structured, unstructured, geo-spatial, and time-series data.
Some of the key features of Elasticsearch include full-text search, aggregations, analytics, machine learning, security, monitoring, and alerting. It can be used for a wide range of use cases, such as e-commerce search, log analytics, application performance monitoring, and fraud detection.
Elasticsearch is widely used by companies and organizations of all sizes, including Airbnb, Netflix, LinkedIn, and NASA. It has a vibrant community of developers and contributors who continuously improve and extend its capabilities.
![#include
#include
#include
#define MAX_URL_LENGTH 150
#define MAX_LEVELS 11
typedef struct ListNode {
char urlComponent[11];
int count;
struct ListNode *next;
} ListNode;
ListNode *new_ListNode(char *...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162215315877326.png)
![/**
* Definition for singly-linked list.
* type ListNode struct {
* Val int
* Next *ListNode
* }
*/
func detectCycle(head *ListNode) *ListNode {
curNode := head
hashTable := make(map[*ListNode]interface{})
for curNode != ...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162238531846138.png)
![/**
* Definition for singly-linked list.
* type ListNode struct {
* Val int
* Next *ListNode
* }
*/
func detectCycle(head *ListNode) *ListNode {
curNode := head
hashTable := map[*ListNode]interface{}
for curNode != nil {
...](https://linuxcpp.0voice.com/zb_users/upload/2023/05/202305162231509251321.png)
