1. What are time complexity and space complexity? 1.1 Algorithm efficiency Algorithm efficiency analysis is divided into two types: the first is time efficiency, and the second is space efficiency. Time efficiency is called time complexity, while space efficiency is called space complexity. Time complexity mainly measures the running speed of an algorithm, while space […]
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Data structure-heap sort and its complexity calculation
Table of Contents 1. Heap sort 1.1 Adjust heap construction upward 1.2 Adjust heap construction downwards 2. Comparison of time complexity between two heap building methods 2.1 Adjust downward the time complexity of heap building 2.2 Adjust the time complexity of heap construction upward Topk problem In the previous section, we talked about Heap implementation, […]
Why use virtual environment in python? (Virtual environment function and virtual environment construction, switching, exit, migration and packaging) code demonstration. Official venv usage (**)
Detailed graphic and text explanation of python’s virtual environment (virtual environment functions and virtual environment construction, switching, exit, migration and packaging) code demonstration https://blog.csdn.net/weixin_45440484/article/details/130144943 http://www.360doc.com/content/23/0828/21/1339386_1094251670.shtml Why use a virtual environment? First, a virtual environment helps keep your projects clean and separate. You don’t have to worry about one project’s dependencies breaking another, which makes project […]
Three basic algorithms for sorting with time complexity n^2
Foreword: Bubble sort, selection sort, and insertion sort are all sorting algorithms with a time complexity of n^2. They are also the basis for us to learn other sorting algorithms later. Next, I will explain these three sorting algorithms to you in as much detail as possible. Time and optimization plan, if you have gained […]
Data structure – time complexity and space complexity
1. Algorithm efficiency 1.1 Complexity of algorithm After the algorithm is written into an executable program, it takes time, resources and space to run. ( Memory ) resource . therefore Measuring the quality of an algorithm, generally Measured from two dimensions: time and space , namely time complexity and space complexity. Time complexity mainly measures […]
[Elementary Data Structure] Time Complexity and Space Complexity of Algorithms
Hello readers! Now I will briefly talk about a basic knowledge point in data structure based on C language: the time complexity and space complexity of the algorithm. I hope it will be helpful to you. Table of Contents 1. What is a data structure? 2. What is an algorithm? 3. Time complexity 3.1 The […]
Algorithm time complexity and space complexity and space complexity
When we usually do math problems, there are simple methods and complex methods for the same problem. And the same goes for our computer programs. When an algorithm is written as an executable program, it requires time resources and space (memory) resources when running. Therefore, measuring the quality of an algorithm is generally measured from […]
Cordova series simplifies complexity: creating Cordova components suitable for all scenarios
Foreword In the opening chapter of my previous article A Preliminary Study of Cordova, I mentioned that one of the significant limitations of Cordova in Android application development is that our Activity must inherit the CordovaActivity provided by it. This design is particularly restrictive for projects that pursue personalized UI design. In fact, it is […]
Space complexity and time complexity of sorting algorithm
1. Time complexity and space complexity of sorting algorithm Sort Algorithm Average time complexity Worst time complexity Best time complexity Space complexity Stability Bubble sort O(n2) O(n2) O(n) O(1) ? Direct selection sort O(n2) O(n2) O(n2) O(1) ? Direct insertion sort O(n2) O(n2) O(n) O(1) ? Quick sort O(nlogn) O(n2) O(nlogn) O(nlogn) ? Heap sort […]
finished with exit code -1073740791 (0xC0000409)
Table of Contents finished with exit code -1073740791 (0xC0000409) background wrong reason solution 1. Optimize recursive functions 2. Increase stack space 3. Fix code logic errors 4. Use tools to locate problems Summarize finished with exit code -1073740791 (0xC0000409) background In the process of developing software, various errors and exceptions are often encountered. Among them, […]