deterministic

I have been reading about Quicksort and found that sometimes it' s referred to as "Deterministic Quicksort". Is this an alternate version of the normal Quicksort ? What is the difference between a normal Quicksort and a Deterministic Quicksort ? The ordinary ("deterministic") Quicksort can have very poor behaviour on particular datasets (as an example, an implementation that picks the first unsorted element has O(n^2) time complexity on already-sorted data). Randomized Quicksort (which selects a random pivot, rather than choosing deterministically) is sometimes used to give better expected

I have a problem which has an solution that can be solved by iteration, but I'm wondering if there's a more elegant solution using regular expressions and split() I have a string (which excel is putting on the clipboard), which is, in essence, comma delimited. The caveat is that when the cell values contain a comma, the whole cell is surrounded with quotation marks (presumably to escape the commas within that string). An example string is as follows: 123,12,"12,345",834,54,"1,111","98,273","1,923,002",23,"1,243" Now, I want to elegantly split this string into individual cells, but the catch is

I'm writing an Android game using LibGDX and Box2D. I'm planning on adding a turn-based multiplayer feature to it. Now, if on both clients I step the Box2D world at the same rate with the same time steps and I start a simulation on both clients with the exact same initial parameters, when the simulations are over, will the final state of both simulations be exactly the same? In other words, is a Box2D simulation perfectly deterministic? If it's not, then that means every time a simulation is over, one client acting as a host will have to tell the other to throw away its final simulation's

I stepped into the assembly of the transcendental math functions of the C library with MSVC in fp:strict mode. They all seem to follow the same pattern, here's what happens for sin . First there is a dispatch routine from a file called "disp_pentium4.inc". It checks if the variable ___use_sse2_mathfcns has been set; if so, calls __sin_pentium4 , otherwise calls __sin_default . __sin_pentium4 (in "sin_pentium4.asm") starts by transferring the argument from the x87 fpu to the xmm0 register, performs the calculation using SSE2 instructions, and loads the result back in the fpu. __sin_default (in

Related to this question , I decided to check the UDFs in my data warehouse (which should largely have been deterministic), and I found several which aren't which should be. For instance: CREATE FUNCTION [udf_YearFromDataDtID] ( @DATA_DT_ID int ) RETURNS int AS BEGIN RETURN @DATA_DT_ID / 10000 END Shows up in this query: SELECT ROUTINE_NAME FROM INFORMATION_SCHEMA.ROUTINES WHERE IS_DETERMINISTIC = 'NO' AND ROUTINE_TYPE = 'FUNCTION' ORDER BY ROUTINE_NAME Why is this? Yikes - apparently, it REQUIRES SCHEMABINDING to be specified other wise it could cause performance problems ALTER FUNCTION [udf