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Does the string on the fourth day of C language practice contain supplementary questions Title Description: Suppose there is A string A composed of various letters and another string B. the number of letters of B in the string is relatively small. What is the fastest way to find all the letters in small string B in large string A? For ...

A - upper step 2 Xiaogua wants to go up a total of N steps. Due to the special leg length of xiaogua, he can only go up 1 or 3 or 5 steps at a time. Xiaogua wants to know how many ways he can get up these n steps. Can you help him? Input An integer n (n < = 100000) in a row indicates that there are n steps in total. Output An integer i ...

Article content 1, Selective sorting method Selective sorting is to repeatedly take out the smallest (or largest) data from the unordered sequence and store it at the beginning of the sequence, and then continue to find the smallest (or largest) data from the unordered elements and store it at the end of the sorted sequence. The final re ...

Depth first search maze problem Video learning link: https://www.bilibili.com/video/BV1pk4y1z76B Depth first search: referred to as dfs, is a classic search algorithm. Recursive review We have studied recursion before. We have implemented some algorithms using recursion: # 1. Recursive factorial # n! = 1*2*3*4******n def factorial(n): ...

Task 3: thesis code statistics 3.1 task description Task topic: thesis code statistics, statistics related to the codes in all papers;Task content: use regular expressions to count code connections, pages and chart data;Task achievement: learn regular expression statistics; 3.2 data processing steps In the original arxiv data set, the autho ...

Leetcode question brushing record: 1 sum of two numbers (array hash) Title stem: Given an integer array nums and an integer target value target, please find the two integers with and as the target value target in the array and return their array subscripts. You can assume that each input will correspond to only one answer. However, the sam ...

subject Origin link describe You are now in charge of designing a new paper shredder. The general shredder cuts the paper into small pieces and becomes difficult to read. The new shredder you designed has the following characteristics: 1. Before each cutting, a target number of shredders should be given first, and a number should also be in ...

Realize pow(x, n), that is, calculate the N-power function of X (i.e., xn). Library functions should not be used and large numbers should not be considered. Example 1: Input: x = 2.00000, n = 10 Output: 1024.00000 Example 2: Input: x = 2.10000, n = 3 Output: 9.26100 Example 3: Input: x = 2.00000, n = -2 Output: 0.25000 Explanation: 2-2 = ...

Anaconda installation 1.1 download installation files 1) If you want to download directly to the local server and upload to the remote server through ftp, please ignore the following operations 2) If the server is networked, you can directly download the server through wget command [centos version], as follows: The linux system I use is cen ...

AVL tree concept Background: Although the binary search tree can shorten the search efficiency, if the data is orderly or close to orderly, the binary search tree will degenerate into a single tree, and the search elements are equivalent to searching elements in the sequence table, which is inefficient, Therefore, two Russian mathematicians G ...