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1182. Minimum distance from target color Give you an array of colors, which has 1, 2 and 3 colors. We need to perform some queries on colors, where each item to be queried is composed of two integers i and c. Now please help design an algorithm to find the shortest distance from index i to the element with target color c. If no solution exi ...

This article explores some of the most common dichotomy scenarios: finding a number, finding the left boundary, and finding the right boundary. Moreover, we just want to go into the details, such as whether the unequal sign should be equal, whether the mid should be added, and so on. In the form of question and answer, analyze the differences ...

preface Just call me Shen Qi. Recently, I have gained a lot from watching the video of AcWing algorithm basic course. So I decided to open up the algorithm section and officially began to sort out the algorithm notes and clarify my ideas. This time, we brought prime bucket. Hey, hey. Each part will be matched with the corresponding exerci ...

What is the lifecycle of spring beans For ordinary Java objects, create the object when new, and then the object can be used. Once the object is no longer used, Java automatically garbage collects it. The objects in Spring are beans. Beans are no different from ordinary Java objects, except that Spring no longer uses the new object itself, bu ...

A - identical test The teacher hates it when someone plagiarizes in the exam. Since the electronic marking, it is much easier for teachers to find the same papers. As long as they input the answers of two people into the computer, compare them character by character, and find out the same positions at a glance. Input format 22 lines, each li ...

Training documents can also be obtained directly at the end of the text Algorithm design and analysis training 1. Title 0-1 knapsack problem 2. Purpose The purpose of course design is to train students to flexibly apply the learned data structure knowledge and independently complete the comprehensive practical ability of the whole proce ...

Hello everyone, I'm hehaige. I focus on the back end. If I can, I want to be a code designer instead of an ordinary coder to witness the growth of hehaige. Your comments, praise and attention are my biggest motivation. If there are mistakes, please don't hesitate to give me advice. Thank you very much. Let's support the original! If there is a ...

Title Description a180285 likes skiing very much. He came to a snow mountain, where there are ， mm ， taxiing tracks and ， nn ， track intersections (also scenic spots), and each scenic spot has a number ， i\space (1 \le i \le n)i (1 ≤ i ≤ n) and a height ， h_ihi​. A180285 can slide from the scenic spot ＾ ii ＾ to the scenic spot ...

Before introducing the chain forward star, let's look at a picture: Layer 1 1 2 3 4 5 6 1 2 ...

Background knowledge required for reading this article: ridge regression, Lasso regression and a little programming knowledge1, Introduction    we learned two regularization methods of ridge regression and lasso regression. When multiple features are related, Lasso regression may select only one of them randomly, and ridge regression ...