language-agnostic

问题 I have a job scheduling problem with a twist- a minimization constraint. The task is- I have many jobs, each with various dependencies on other jobs, without cycles. These jobs have categories as well, and can be ran together in parallel for free if they belong to the same category. So, I want to order the jobs so that each job comes after its dependencies, but arranged in such a way that they are grouped by category (to run many in parallel) to minimize the number of serial jobs I run. That

问题 Revisiting Longest Common Subsequence, I was wondering what is the number of common subsequences of 2 strings. I tried to formulate a recurrent relation : DP[i][j] represents the number of subsequences ending at max i in first string and j in second. Recurrent relation being : DP[i][j]= DP[i-1][j-1] + DP[i][j-1] + DP[i-1][j] when A[i]==B[j] (A is my first string while B is the second) and DP[i][j]=DP[i-1][j]+DP[i][j-1] other wise It is not giving correct results! Explanation if A[i]==B[j],

问题 Revisiting Longest Common Subsequence, I was wondering what is the number of common subsequences of 2 strings. I tried to formulate a recurrent relation : DP[i][j] represents the number of subsequences ending at max i in first string and j in second. Recurrent relation being : DP[i][j]= DP[i-1][j-1] + DP[i][j-1] + DP[i-1][j] when A[i]==B[j] (A is my first string while B is the second) and DP[i][j]=DP[i-1][j]+DP[i][j-1] other wise It is not giving correct results! Explanation if A[i]==B[j],

问题 So I am given an (unsorted) array A of N distinct integers, I am trying to implement a divide-and-conquer algorithm to find the Kth smallest element (K ≤ N) in the array (i.e. it would be the overall smallest if K=1). The algorithm returns the value of the Kth smallest element in the array. I need it to run in O(N) time in the average case. Could anyone give me some hints? 回答1: Sephy, I'm going to walk this through very carefully. You always have to be careful when helping people with

问题 The closest I have gotten to assembly is building my own Java Class library which loads class files and allows you to create, compile, and decompile classes. While endeavoring this project, I wondered how the Java Virtual Machine actually generated native machine code at runtime during JIT optimizations. It got me thinking: how could one generate machine code and execute it at runtime with assembly, and as a bonus, without a JIT compiler library, or "manually"? 回答1: Your question changed

问题 I have occasion to need to print code (Horrors!!! ;) ), and i was wondering what editor or tool would i use to print that code out with proper formatting and syntax highlighting? If it's important, it will be c# code but ideally the tool will work for as many languages as possible. Can Notepad++ or something handle this? 回答1: Yes, Notepad++ can certainly print code with syntax highlighting. Colour printing would obviously be preferable, but on the occasions when I've printed in black and

问题 I have occasion to need to print code (Horrors!!! ;) ), and i was wondering what editor or tool would i use to print that code out with proper formatting and syntax highlighting? If it's important, it will be c# code but ideally the tool will work for as many languages as possible. Can Notepad++ or something handle this? 回答1: Yes, Notepad++ can certainly print code with syntax highlighting. Colour printing would obviously be preferable, but on the occasions when I've printed in black and

问题 I have been reading a few posts and articles regarding thread quanta (here, here and here). Apparently Windows allocate a fix number of CPU ticks for a thread quantum depending on the windows "mode" (server, or something else). However from the last link we can read: (A thread quantum) between 10-200 clock ticks (i.e. 10-200 ms) under Linux, though some granularity is introduced in the calculation Is there any way to compute the quantum length on Linux? Does that make any sense to compute it

问题 I have been reading a few posts and articles regarding thread quanta (here, here and here). Apparently Windows allocate a fix number of CPU ticks for a thread quantum depending on the windows "mode" (server, or something else). However from the last link we can read: (A thread quantum) between 10-200 clock ticks (i.e. 10-200 ms) under Linux, though some granularity is introduced in the calculation Is there any way to compute the quantum length on Linux? Does that make any sense to compute it

问题 I have been reading a few posts and articles regarding thread quanta (here, here and here). Apparently Windows allocate a fix number of CPU ticks for a thread quantum depending on the windows "mode" (server, or something else). However from the last link we can read: (A thread quantum) between 10-200 clock ticks (i.e. 10-200 ms) under Linux, though some granularity is introduced in the calculation Is there any way to compute the quantum length on Linux? Does that make any sense to compute it