Programmer Group

  Main idea: first determine an M, then input the coordinates of the left and right ends of multiple groups of line segments, and then let you find out that in the given line segment, you can The minimum number of lines needed to completely cover the [0, M] area, and output the left and right endpoint coordinates of these lines.   Thought ...

Exercise 1 - global replacement procedure: 1. Write a script to allow the user to perform global replacement of the specified file content as follows 　　python your_script.py old_str new_str filename2. After the replacement, print how many parts have been replaced 1. Contents of TXT: Ma Xianyu Shenzhen 173 13744234523 Qiao Yifei Guangzho ...

There are four operations to maintain a 01 sequence: 1. Insert a number 2. Delete a number 3. Reverse an interval 4. Query LCP with two suffixes It can be done with Splay or Treap. Maintain hash value and binary LCP. Note that the hash value of the sequence will also change when reversing the sequence, so it is necessary to maintain the p ...

This problem is a famous NP problem. The positive solution should be DP, but I'm going to talk about an approximate algorithm here - climbing. It is hoped that some dalao will pay attention to the difference between mountain climbing and simulated annealing. Climbing is straight to the low to the high, each time take big, that is, a greedy thou ...

Because the application is in the internal network environment, it can not directly access the external network. However, the requirement is that the application needs to redirect to the external network environment's login QR code for code scanning and login. When processing page redirection, ...

1. Import the web project, create the authentication module, and modify the pom.xml file 2. Paste the profiles file into the authentication module. There are two files database.properties and redis.properties in the profiles folder. Modify the database connection properties (user name, password, database name, etc.) in database.properties, an ...

I. converting Date to LocalDateTime in Java 8 Method 1: To convert Date to LocalDatetime, we can use the following methods: 1. Get zonedatetime from date and use its method toLocalDateTime() to get LocalDateTime 2. Use the Instant() factory method of LocalDateTime Example: package ins ...

In STL, there are algorithms to realize intersection, union, difference and symmetric difference. Include header file before use: #include <algorithm> Note: the algorithm of calculating intersection and union must ensure that the two sets involved in the operation are in order! Intersection: For example, find the intersection of ...

UA pool: user agent pool -Function: disguise the requests in the project as different types of browser identity as much as possible. -Operation process: 1. Intercept requests in download Middleware 2. Disguise the UA in the intercepted request header information 3. Enable download Middleware in configuration file Code display #Guide b ...

# import numpy as np import pandas as pd from pandas import Series,DataFrame import matplotlib.pyplot as plt from pylab import mpl mpl.rcParams['font.sans-serif'] = ['FangSong'] # Specify default font mpl.rcParams['axes.unicode_minus'] = False # Resolve save image is negative'-'Questions displayed as squares //Import data coastal ...