I'm fairly new to the Stack Exchange network, and I really like the Q&A format used here, which is very clear to read and to use.
I started exploring all the sites, and I found there's a Code Golf site (http://codegolf.stackexchange.com), but it doesn't seem to be a Q&A site, but rather a contes...
L/km to mpg conversion
code-golf restricted-source
Challenge
Using only bitwise operators (&, |, <<, >>, ~), you must, given a variable a, convert a from litres per kilometre (L/km) to miles per gallon (mpg).
You may assign to a variable. Your submissions will be tested on Python. The code w...
Make Copying Easier!
code-golf internet javascript
Introduction
Writing essays was made so much easier with the invention of Wikipedia. The thing is that you get these annoying links in your text and left behind citations[3] giving you the job of removing them all [citation-needed].
Challenge...
There should be a restriction that you cannot ask a question on PPCG until you get a reasonable score on an answer. That would prevent so many low quality questions from being asked.
TTA is a type of architecture in which every instruction is MOV, such as MOV 23 46 to move data from address 23 to 46 (or 46 to 23 depending on how you interpret it).
The problem I'm currently trying to solve is figuring out how to allow the computer to access data at locations longer than its word length.
If it's simply an eight-bit computer, then that's only 4 bits per memory location (not enough).
A 32 bit computer could access 65536 memory locations, but then I would have to create every to work with 32 bits.
@BetaDecay sorry, apparently you actually chose another reason. I thought SE only displays a single reason if the split is 4:1, but it may have been 3:1:1 instead
@PhiNotPi wouldn't 8-bit words allow 8 bits for addressing a location (pretty much by definition of wordsize)? So 256 memory cells for 8-bit and 2³² for 32-bit
@FireFly The most straightforward way of implementing it would make it so that each memory location can store either a number or an instruction. Each instruction would be composed of two numbers half the length.
So if a memory location can store a 32-bit number, the instructions can only contain 16-bit numbers.
@PhiNotPi I think having instructions be two machine words would be simpler. You can fetch both memory locations (PC and PC+1) in parallel, and I think it simplifies slightly in that you don't have to zero-extend the addresses (not that it makes much of a difference)
Help me sweep the floors
I have to sweep the floor of an MxN foot floor every night, where M and N can be any value between 1 and 1000. I need to know the most efficient method of sweeping this floor so I can get it done in the least amount of time.
Rules:
Each stroke of the broom clears a 1...
Ahhh, I hit the limit of 20 first posts, and there are 13 more!
Now I can't work toward the silver/gold reviewing badges for a couple of hours.
It looks like we have a consensus that we want certain defaults for code golfs, in the format answers are expected in. On that poll, the question arose twice, which input/output formats should be allowed for programs and functions.
So here is another poll. This one works different though. All th...
L/km to mpg conversion
code-golf restricted-source
Challenge
Using only bitwise operators (&, |, <<, >>, ~), you must, given a variable a, convert a from litres per kilometre (L/km) to miles per gallon (mpg).
You may assign to a variable. Your submissions will be tested on Python. The code w...
Help me sweep the floors
I have to sweep the floor of an MxN foot floor every night, where M and N can be any value between 1 and 1000. I need to know the most efficient method of sweeping this floor so I can get it done in the least amount of time.
Rules:
Each stroke of the broom clears a 1...
