Article directory 1 Hamiltonian circuit 2 Implementation of Hamiltonian cycle algorithm 2.1 Conventional backtracking algorithm 2.2 Introduce variables to record the number of remaining unvisited nodes 3 Hamiltonian path problem 4 state compression 4.1 Check whether the i-th bit is 1 4.2 Set the i-th bit to 1 or 0 4.3 Summary 4.4 Application of […]
Tag: lto
Converting wkhtmltopdf from HTML to PDF files causes table pagination to fail, solution and Java implementation
This requirement requires that the space where the table is insufficient be displayed on another page. After dynamically splicing HTML statements based on data, use wkhtmltopdf to convert HTML to PDF files. It was found that it was successful locally but failed when deployed to the test environment. After investigation, it is because the version […]
HDU – 2181Hamiltonian orbiting world problem (dfs+backtracking)
–>Hamiltonian circumnavigation problem Descriptions: A regular solid dodecahedron, its 20 vertices mark 20 famous cities in the world. You start from a city and pass through each city exactly once before returning to the starting city. Input There are 3 numbers in the i-th line of the first 20 lines, indicating the three cities adjacent […]
Java integrates Thymeleaf and wkhtmltopdf to implement HTML export to PDF
There are several problems in the front-end implementation of exporting PDF product reports: 1. It is a PDF of the picture version; 2. The PDF is too large and will get stuck; 3. The text may be cut into pages; 4. The platform cannot provide API interface services. The core are questions 3 and 4. […]
pagyX/Y, clientX/Y, offsetX/Y, screenX/Y; clientHeight, scrollHeight, scrollTop; offsetHeight, offsetTop+slider
Mouse position: 1. pageX/Y is relative to the X and Y coordinates of the entire page: the reference position is the upper left corner of the page 2. clientX/Y The X, Y coordinates (window coordinates) of the mouse relative to the visible area of the browser window. The visible area does not include toolbars and […]
Brief analysis of ORCA optimizer–DXLToPlStmt[CTranslatorDXLToPlStmt]
As shown in the figure above, it is the main entry function that converts plan_dxl to plan_stmt. Its main job is to create plan_id_generator, motion_id_generator, param_id_generator, table_list, and subplans_list, and set them to CContextDXLToPlStmt dxl_to_plan_stmt_ctxt for subsequent process calls; initialize the CTranslatorDXLToPlStmt class, and the formal parameters are MDACCESSOR and CContextDXLToPlStmt; finally call d xl_to_plan_stmt_translator.GetPlannedStmtFromDXL […]
Analysis of ORCA optimizer – DXLToPlStmt ForeignScan
There are the following two types of CDXLNode. The CDXLNode is converted to the corresponding Plan through the corresponding function: EdxlopPhysicalForeignScan –》TranslateDXLTblScan EdxlopPhysicalDynamicForeignScan –》TranslateDXLDynForeignScan The more important functions are ProcessDXLTblDescr [translate table descriptor into a range table entry] and CreateForeignScan [create ForeignScan plan node]. We will study their codes in detail later. TranslateDXLTblScan The TranslateDXLTblScan […]
Compute the expected value of a given Hamiltonian based on subspaces
Calculate the expected value of a given Hamiltonian based on subspace When running a quantum algorithm based on the quantum circuit model, the Hamiltonian of the system often consists of multiple items, and each sub-item may only involve a single or a few qubits. If a complete matrix is constructed for each calculation, it will […]
Constructing Hamiltonian paths and Hamiltonian cycles in $D_{2,2}$ with faulty elements.
The program for constructing Hamiltonian paths between any two distinct nodes in D_{2,2} is as follows: import networkx as nx def constructGraph(n,k,I): f1=n*1 + 1 f2=n*f1 + 1 G = nx. Graph() for x1 in range(0,f1): for x2 in range(0,f2): G.add_node(str(x2) + ‘,’ + str(x1)) for i in range(0,f2): for j in range(0,f1): for l […]
centos7 install wkhtmltopdf 0.12.6
Recently, there happened to be a need to convert html to pictures, and I used it about 8 years ago. It’s been too long, and I forgot, thinking that there is a new technology, Baidu checked it all, and found that the wkhtml function is the best! Again! Record it, it is convenient to find […]