Programmer Think

Say before:Due to this exam, I don't know which brother of Xin'an hacked the school's OJ platform, resulting in more than 100 people unable to log in to OJ at the same time, and the exam was forced to be terminated for half an hour However, because a few students just logged in for a short meeting and saw the questions (such as me), the school ...

Portal Given length is N N Array of N Several triples { l , r , w } ...

Primary comprehensive application of python -- student information management system Variable process control function module Project requirements: Realize the addition, deletion, modification, query and exit of the business card. Select different functions by selecting different numbers. The user's name, telephone, QQ email can be modified ...

I. principle of PID algorithm In industrial applications, PID and its derivative algorithms are one of the most widely used algorithms and are well deserved universal algorithms. If you can skillfully master the design and implementation process of PID algorithm, it should be enough for ordinary R & D personnel to deal with general R & ...

Algorithm design and Analysis Experiment 8: backtracking method 1. Subjective questions (10 points) Experiment 8: use the backtracking algorithm to solve the Sum It Up problem (complete the contents of experiment report 3, 4, 5 and 6) 1, Experimental purpose Practice using backtracking algorithms to solve practical problems (implemented in ...

Four methods of single linked list inversion or transpose The reversal of the linked list is essentially to reverse the contents of the linked list: If the data stored in the linked list is: 1 - > 2 - > 3 - > 4 - > 5; After the reversal, it is: 5 - > 4 - > 3 - > 2 - > 1; Here are four methods to reverse the linked list ...

Experimental purposes: Master the solution of undirected connected graph spanning tree;Master the solution of basic loop system and loop space.Master the basic cut set system and the solution of the cut set space;Understand the practical applications of spanning tree, loop space, and breakset space. Experimentation Requirements 1. Given an ...

Portal Meaning: Give you a length of n n String of n, + + +Represent 1 1 1， ...

catalogue subject Test sample Input sample 1 (the title comes with it) Output sample 1 Input example 2 (the title comes with) Output sample 2 Input example 3 (self compiled, special case - N1 and N2 are 0) Output sample 3 Input example 4 (self compiled, normal) Output sample 4 Input example 5 (self compiled, normal) Output example 5 ...

1. Title Give you a positive integer n to generate an n x n square matrix containing all elements from 1 to n2 and the elements are spirally arranged in clockwise order. Example 1: Input: n = 3 Output: [[1,2,3], [8,9,4], [7,6,5]] Example 2: Input: n = 1 Output: [[1]] Tips: 1 <= n <= 20 Source: LeetCode Link: https://leetcode-cn.c ...