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1 Introduction Facial expression recognition technology involves the research fields of emotion computing, image processing, machine vision, pattern recognition, biometric recognition and so on This paper introduces a facial expression recognition technology based on lpq feature and support vector machine (SVM) In this experiment, SVM (suppor ...

preface Enumeration and simulation are the most common contents of the Blue Bridge Cup. Then, if you sort, you won't investigate the handwriting of the quick row, but you will check, merge and sort. When the Blue Bridge Cup inspected the line segment tree, most of them were written with violence. Greed and number theory have been investi ...

A string representing a numeric value 1, Title Description Please implement a function to judge whether the string represents a numeric value (including integer and decimal). The values (in order) can be divided into the following parts: Several spaces A decimal or integer ((optional) one 'e' or 'E' ，Followed by an integer Several ...

Recognize the sorting algorithm of O(NlogN) 1. Analyze recursive behavior and estimate its time complexity Recursive process: the recursive process is a multi fork tree. The process of calculating the nodes of all trees is to use the stack for post order traversal. Each node can continue to return upward only after summarizing information to ...

catalogue 1. Title Description 2. Problem solving analysis 3. Code implementation 1. Title Description Give you an integer array of coins to represent coins of different denominations; And an integer amount, representing the total amount. Calculate and return the minimum number of coins required to make up the total amount. If no combin ...

Simple concept of sliding window Sliding window is a hypothetical data structure. The window we implement in this article can quickly find the maximum and minimum value of the interval The operation efficiency is also excellent in some problems that do not go back in the interval Set the left boundary of the window as l and the right boundar ...

Recursion from introduction to mastery (I) introduction to recursion Write a recursive function What is the function of this recursive function and how to call this function, that is, design the return value and parameter list of the recursive functionWhen should this recursion end and what is its boundary condition (exit)How to change from ...

104. Depth of binary tree Difficulty: simple Given a binary tree, find its maximum depth. The depth of the binary tree is the number of nodes on the longest path from the root node to the farthest leaf node. Note: leaf nodes refer to nodes without child nodes. Example: Given binary tree [3,9,20,null,null,15,7], 3 / 9 20 / 15 7 Returns it ...

Even if you do web development, you will encounter various algorithm problems that need to be solved. This paper extracts some classic hand training algorithms and provides relevant reference answers, hoping to be helpful to you In addition, I have collated and collected interview knowledge points from more than 20 companies for more than 20 ...

Hello, friends (^ - ^) 🌹🌹🌹， I'm Yang Zhi, a dull blogger who is taking steps in the field of algorithms~ At present, it is still a pure vegetable Wang 🐶. The typical kind of food is noisy 👀， I can't do a lot of things well, I can't say a lot of things well, and I can't write questions 😅, Still working, still moving forward 👣. Becaus ...