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Linked list Linked list concept Linked list: a storage structure of data. A linked list contains several nodes. Each node contains at least one data field and one pointer field, and the pointer field points to the next node. Node: the storage image of the data element, which is composed of the data field storing the data element and the p ...

UTHash Use Tutorial quick get start To get started with this module, visit: Introduction, Data Interface, Sample Code introduce Hash: Hash, accessed by mapping data to a location in memory storage through functions on key values. This process is called Hash, a mapping function called a hash function, and an array of records is called a hash ...

Linked list exchange and sorting 1. Given a linked list, two adjacent nodes are exchanged, and the exchanged linked list is returned. Example: given 1 - > 2 - > 3 - > 4, you should return 2 - > 1 - > 4 - > 3 explain: Your algorithm can only use the extra space of constants.You can't simply change the value inside the node, ...

[interview questions] width first search 1, The most concise general template of BFS algorithm 1. BFS templates for trees and graphs new ArrayDeque is recommended for queues, and new LinkedList is not recommended (linked list is slower than array) //Double ended queue Queue<Node> queue = new ArrayDeque<>(); HashMap<Node,Integer ...

preface Wallpaper recommendation If you have any right, please contact me for deletion Blogger profile Blogger introduction: – I am a fan. The meaning is that I hope I will put kindness first and character first at any time. I like the four training of life setting, the method of correction, the way of accumulating kindne ...

catalogue How memory works Arrays and linked lists array Linked list Compare Overall comparison Time complexity Implementation of linked list in python test Select sort Summary How memory works When you go to the supermarket, you should see a storage cabinet at the door. When you go to the supermarket, you store your things in t ...

1, Interval dp As the name suggests, interval dp is the problem of solving the optimal value on the interval. The main idea is to solve the inter cell first, and then use the optimal solution combination between cells to obtain the optimal solution of the maximum interval. If you don't say much, go straight to the example: Classic example: ...

Quick sort is an exchange sort method of binary tree structure proposed by Hoare in 1962. Its basic idea is: any element in the element sequence to be sorted is taken as the reference value, and the set to be sorted is divided into two subsequences according to the sort code. All elements in the left subsequence are less than the reference valu ...

background Recently, I brushed this interesting topic on LeetCode and thought of my love for Sudoku in junior high school. I couldn't help feeling very much. It turns out that this program can produce results in less than 1m, which made me waste so much time to study before. effect It is said that this is the most difficult Sudoku topic [cli ...

1, Types of binary trees 1. Full binary tree Except that the last layer has no child nodes, all nodes on each layer have two child node binary trees (if the depth is k, there are 2^k-1 nodes). 2. Complete binary tree Let the depth of a binary tree be H. Except for layer h, the number of nodes in other layers reaches the maximum, and all n ...