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Stack and queue oj questions [the external chain image transfer fails. The source station may have anti-theft chain mechanism. It is recommended to save the image and upload it directly (img-gqdvgkrh-1644978540376) (E: \ markdown \ note. 1 \ image \ image-20214095416601. PNG)] [the external chain picture transfer fails, and the source stati ...

Python wechat ordering applet course video https://edu.csdn.net/course/detail/36074 Python actual combat quantitative transaction financial management system https://edu.csdn.net/course/detail/35475 Data structure sequence table Sequence table definition 1. Preface The sequential storage of linear table is also called sequential table. I ...

Title Description: define the data structure of the stack. Please implement a min function that can get the smallest element of the stack in this type. In this stack, the time complexity of calling min, push and pop is O(1). Problem solving ideas: push and pop methods belong to the basic methods in the stack; The min and top methods return the ...

21. Merge two sequential tables Input: l1 = [1,2,4], l2 = [1,3,4] Output: [1,1,2,3,4,4] There is nothing to say about using an empty node. class Solution: def mergeTwoLists(self, l1: ListNode, l2: ListNode) -> ListNode: dummy = ListNode() p = dummy while l1 and l2: if l1.val < l2.val: ...

Overview of knowledge points:     1. Sum of two numbers: Given an integer array ， nums ， and an integer target value ， target, please find the ， and the ， integers with 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 same e ...

Directory navigation: Minimum spanning tree: For a graph with n points, the edges must be greater than or equal to n − 1. The minimum spanning tree is to select from these edges N-1 edges connect all n points, and the sum of edge weights of these n − 1 edges is the smallest of all schemes One more thing: There are n ...

preface Previously, we learned several basic data types: string, integer and floating point, Now we learn two types of tuple and tuple. 1, List 1. What is a List List is a data type built into Python. It is an ordered collection, in which the elements can be added and deleted at any time Plain. So why List? Let's use an example to illust ...

#include<iostream> #include<cstdlib> #include<cstdio> #include<algorithm> #include<cstring> #define MAXSIZE 100 #define OK 1 #define ERROR 0 #define OVERFLOW -2 using namespace std; typedef int Status; typedef int ElemType; typedef struct{ ElemType *elem; int length; }SqList; //Linear table initialization Statu ...

LeetCode brush question array 1, Array 1.1 definition of array An array is a collection of several objects with a certain order. The objects that make up the array are called array elements. Where the vector corresponds to a one-dimensional array and the matrix corresponds to a two-dimensional array. 1.2 storage characteristics of array Ar ...

In life, we often encounter such situations: 1. When someone sends a book at school, if he wants to take out the top book, he can take it out directly. However, if he wants to take out the book in the middle, he must remove the book pressed on it to see the book. At this time, only the top can be taken out first, and the bottom can be taken out ...