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A string representing a numeric value 1, Title Description Please implement a function to judge whether the string represents a numeric value (including integer and decimal). The values (in order) can be divided into the following parts: Several spaces A decimal or integer ((optional) one 'e' or 'E' ，Followed by an integer Several ...

Memory leak What is a memory leak: A memory leak is a condition in which a program fails to free memory that is no longer in use due to negligence or error. Memory leakage does not mean the physical disappearance of memory, but the loss of control over a certain section of memory due to design errors after the application allocates it, res ...

=Generic programming and STL = = technology are explained in detail to explore the deeper use of C + + 1 template 1.1 concept of template Template is to establish a general mold, which greatly improves the reusability Characteristics of formwork: The template cannot be used directly. It is just a frameworkThe universality of templates is n ...

Reference link first [motion control] Apollo 6 MPC of 0_ Controller parsing Apollo MPC OSQP Solver For detailed derivation of vehicle lateral dynamics model, please refer to my other blog Horizontal control principle and core code line by line analysis of Apollo control module Because it is similar to the code and framework of LQR control ...

Smart pointer unique_ptr unique_ptr is one of the simplest and easiest to use smart pointers. When declaring, you must specify the type with template parameters, for example: unique_ptr<int> ptr1(new int(10)); //int smart pointer assert(*ptr1 = 10); // Use * to get content assert(ptr1 != nullptr); //You can determine whether it is a ...

2022-02-23 swipe questions and punch in every day All in one -- dynamic programming 1274: [example 9.18] merge stones [Title Description] N piles of stones are placed in rows on a playground. Now we need to merge the stones into a pile in order. It is stipulated that only two adjacent piles of stones can be selected each time to combine int ...

Recursion from introduction to mastery (I) introduction to recursion Write a recursive function What is the function of this recursive function and how to call this function, that is, design the return value and parameter list of the recursive functionWhen should this recursion end and what is its boundary condition (exit)How to change from ...

C++ programming: common sorting algorithms Bubble sort Algorithmic ideas: Compare adjacent elements. If the first is larger than the second, swap the two;Do the same work for each pair of adjacent elements, from the first pair at the beginning to the last pair at the end, so that the number of elements at the end should be the maximum;Repeat ...

preface: Previously, I wrote an article about using opencv on nano. By default, the library of opencv is installed on nano. In addition to nano, we also want to use opencv to do some usual image processing verification on our own computers. Originally, I read some materials and installed them. I don't think it's necessary to write them. How ...

preface My story with topological sorting The first contact was the class of data structure. However, I was addicted to playing games and didn't understand the code at that time. The second time was the punch in group. The second question of a force deduction fortnightly competition was topological sorting (I used violence to cycle 100 times ...