Programmer Group

Note: Title: Design the implementation of linked list. You can choose to use single linked list or double linked list. A node in a single linked list should have two attributes: val and next. val is the value of the current node, and next is the pointer / reference to the next node. If you want to use a two-way linked list, you also need an at ...

5. Linear table Linear table is the most basic, simplest and most commonly used data structure. A linear table is a finite sequence of n data elements with the same characteristics Precursor element: if element A is in front of element B, A is called the precursor element of B Successor element: if element B is after element a, it is calle ...

In binary search, the definition of the search interval of the target element is very important, and the definitions of different intervals are written differently. Because the search interval is iterative, it is very important to determine the search range, mainly the opening and closing of the left and right intervals. The opening and closing ...

1 Introduction 1 origin and development of ant colony algorithm (ACA) In the process of studying the new algorithm, Marco Dorigo and others found that when ant colony is looking for food, they can exchange foraging information by secreting a biological hormone called pheromone, so they can quickly find the target. Therefore, in their doctoral ...

1. Problem Description: Given an array of length N, the ith number in the array represents the price of a given stock on day i. Design an algorithm to calculate the maximum profit you can make. You can complete up to k transactions. Note: you cannot participate in multiple transactions at the same time (you must sell the previous shares before ...

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problem Given an array arr of length N, its ith element is the price of a given stock on day i. Design an algorithm to calculate the maximum profit you can make. You can complete up to k transactions. You cannot participate in multiple transactions at the same time (you must sell the previous shares before buying again). [dynamic planning ide ...

1 Introduction to algorithm 1.1 principle of BP neural network algorithm affected by relevant indexes As shown in Figure 1, when training BP using MATLAB's newff function, it can be seen that most cases are three-layer neural networks (i.e. input layer, hidden layer and output layer). Here to help understand the principle of neural network: 1 ...

1: Title: The multiplication of matrix is defined as follows: let A be m × The matrix of P, B is p × N, then the product of A and B is m × The matrix of n is written as C=AB, where the element C in row i and column j of matrix C ij ​ It can be expressed as: c ij ​ =Σ k=1 p ​ a ik ​ ×b kj ​ =a i1 ​ b 1j ​ +a i2 ​ b 2j ​ +⋯+a ...

String (3) Hello, everyone! I'm Xiao Sheng! I was busy learning java back-end technology, delayed the update of algorithm topics, and was ashamed to set up a weekly brushing plan to break through. Now I'm on the road of brushing again, keep it up! Go on! String (3) Series of questions as follows Subsequence (392) 392. Judgment Subseq ...