language-agnostic

问题 I am trying to solve a dynamic programming problem from Cormem's Introduction to Algorithms 3rd edition (pg 405) which asks the following: A palindrome is a nonempty string over some alphabet that reads the same forward and backward. Examples of palindromes are all strings of length 1, civic , racecar , and aibohphobia (fear of palindromes). Give an efficient algorithm to find the longest palindrome that is a subsequence of a given input string. For example, given the input character , your

问题 Locked . This question and its answers are locked because the question is off-topic but has historical significance. It is not currently accepting new answers or interactions. What is the least amount of code you can write to create, sort (ascending), and print a list of 100 random positive integers? By least amount of code I mean characters contained in the entire source file, so get to minifying. I'm interested in seeing the answers using any and all programming languages. Let's try to keep

问题 I've been doing web dev for 10 years now, mostly the MS stack but some LAMP as well. There are so many choices these days for programmers and the job market seems to be all over the place. Before I dive into some new technology once again I was hoping to get some perspective from others in regards to additional benefits of being a jack of all trades developer other than having a broad marketable skill set? Chime in with your experience please. 回答1: Here are some thoughts on the benefits of

问题 I'm trying to understand object orientation. I understand it a little bit of course, but sometimes I'm not 100% clear. How do you decide what should be turned into an object (small object part of another big whole object) or what is not worth being an object, or maybe it should be just a property of that big whole object? For a door, I guess the door knob should be an independent object, but should that part in the middle where you insert the key also be an independent object or what? This is

问题 I am designing a web site in which users solve puzzles as quickly as they can. JavaScript is used to time each puzzle, and the number of milliseconds is sent to the server via AJAX when the puzzle is completed. How can I ensure that the time received by the server was not forged by the user? I don't think a session-based authenticity token (the kind used for forms in Rails) is sufficient because I need to authenticate the source of a value, not just the legitimacy of the request. Is there a

问题 I am attempting to solve performance issues with a large and complex tomcat java web application. The biggest issue at the moment is that, from time to time, the memory usage spikes and the application becomes unresponsive. I've fixed everything I can fix with log profilers and Bayesian analysis of the log files. I'm considering running a profiler on the production tomcat server. A Note to the Reader with Gentle Sensitivities: I understand that some may find the very notion of profiling a

问题 In book Algorithms fourth edition by Robert Sedgewick on page 200, it says "for example, if you have 1GB of memory on your computer (1 billion bytes), you cannot fit more than about 32 million int values." I got confused after my calculation: 1,000,000,000 bytes/4 bytes = 250 million How the author got 32 million? The book describes like below: 回答1: The author has acknowledged that this is an error in this book website, please refer to the link as follows: http://algs4.cs.princeton.edu/errata

问题 I need a script in any language to capitalize the first letter of every word in a file. Thanks for all the answers. Stackoverflow rocks! 回答1: In Python, open('file.txt').read().title() should suffice. 回答2: Using the non-standard (Gnu extension) sed utility from the command line: sed -i '' -r 's/\b(.)/\U\1/g' file.txt Get rid of the " -i " if you don't want it to modify the file in-place. note that you should not use this in portable scripts 回答3: C#: string foo = "bar baz"; foo = System

问题 I am creating a pseudocode in determining the smallest and largest number among 3 numbers: My code is as follows: If (x >= y) largest = x Smallest = y Else largest = y Smallest =x If (z >= largest) Largest = z If (z <= smallest) Smallest = z Do you think this is correct? or are there better ways to solve this? 回答1: Let's say you've got arbitrary numbers x, y, z . Pseudocode: largest = x smallest = x if (y > largest) then largest = y if (z > largest) then largest = z if (y < smallest) then

问题 I am creating a pseudocode in determining the smallest and largest number among 3 numbers: My code is as follows: If (x >= y) largest = x Smallest = y Else largest = y Smallest =x If (z >= largest) Largest = z If (z <= smallest) Smallest = z Do you think this is correct? or are there better ways to solve this? 回答1: Let's say you've got arbitrary numbers x, y, z . Pseudocode: largest = x smallest = x if (y > largest) then largest = y if (z > largest) then largest = z if (y < smallest) then