Computer Science Forum

I have question about if my input matrix was | 1 2 3 4 | | 2 3 4 5 | | 3 4 5 6 | how I would get an output matrix | 0 0 0 0 0 0 | | 0 1 2 3 4 0 | …

There are x number of users. Every time a user clicks a button, they give another random user a high-five. They get rewarded for giving the other user a high 5, and there is then an increase in the potential for them to receive a high five from others. Each …

This is just a little bit of fun, mine would be HFS+ because of the following; [LIST] [*]Seek Speed for files [*]Auto Optimisation [*]Journalling (Although technically HFSJ) but is in HFS+ [/LIST] Dislikes [LIST] [*]Compatibility [*]Slows down when reading many files ( Badly ) [/LIST]

i have seen that some amount of the memory like my 8GB pendrive on linux PC which has one unit = 1000 which is exactly same used by the pendrive sellers.....is somewhat less than 8GB. it is 7.9 GB, why ? also on windows, my 500 GB HDD should be …

Hi there, I've always been wondering what's the best way to model a one-to-many relation between two Java classes and save them into a DB. For example, Imagine we have two classes Person and Address where a person might have more than one address, we know that the best way …

I have root folder called "My Root". Its content some other file like message.txt and image.jpg.I made a zip file using 7zip in different methods. [B]I want to know what are the different between those methods..[/B] [U]First Method[/U] I select & right click on image.jpg into image.zip and drag other …

Hi I want to display the data from database, in graphical manner, Can anyone suggest an idea. for eg: Piechart for productivity of a company. Name Productivity rahul 200 ramesh 345 raj 429 Thanks

I see that there are many questions here regarding complexity analysis, specifically regarding the Big-O notation of algorithms. I will attempt to shed some light on the subject. I will start with an introduction, after which I will go over some common complexities and last we will solve a few …

Hello, I'm a mac user and starting a new module in Prolog and wondering if there are any applications that can compile and run Prolog for mac? Sounds silly, but can use terminal? Thanks :)

Hi :) I am trying to make a program that will find the first x perfect squares. I have done and redone this many times, but it never works. So basically, it needs to do two things: check if y is a perfect square. If it is, it needs to …

I want to learn a new programming language, which I can use to create large applications such as operating systems, editing applications. I know it requires a great deal of understanding of contents, but I can not decide which language. it is either C or C++ need advice... :icon_eek:

Assume that we have a mergesort algorithm which takes 2 series as an input and returns 1 after the merge each time. So that if we want to count say memory blocks we would need 2 blocks for the input and 1 for the output accordingly, total size of 3 …

Hello guys, I want to grab data from a website bet-mate.com. I tried some ready made software but as I understood you can grab data if there is an HTML table. In this website that I am trying to grab them there is no table. Can anyone advice me how …

is there any development or do you have any input on the possibility of instant downloads? is it possible?

hi, i have a system ans it is that users logs in with username and password .. and this is a risk since users can log in with others account.. now as a mitigation(avoid the risk) i listed that users can log in using finger print. now i have to …

Given this question below, Each element of an array arr[10][10] requires ‘W’ bytes of storage. If the address of arr[6][8] is 4580 and the Base address at arr[1][1] is 4000, find the width of ‘W’ of each cell in the array arr[ ][ ], when the array is stored as …

How does postfix notation and prefix notation work for exponents because I know how postfix notation works on order of operations for plus, minus, division, multiplication. I would like to know how this works with the use of a stack in a pseudo-code format.

Hi I want to auto detect the language and translate it to english, im using it in an interface, I tried google API translate code but it is not translating the value in variable Can any one plz try Eg: I want to translate the sentence in $x to English …

I'm new to programming language and I learning pseudocode.Firstly the question is like this: 11 7 12 36 15 -18 21 4 17 29 A[1] A[2] A[3] A[4] A[5] A[6] A[7] A[8] A[9] A[10] 1)A[A[7]-A[3]] 2)A[3+2] The second question is List and explain 3 type of iteration.

Need help writing psuedocode for the following question The local driver's license office has asked you to design a program that grades the written portion of the driver's license exam. The exam has 20 multiple choice questions. Here are the correct answers: 1. B 2. D 3. A 4. A …

Hey, I'm studying for a final exam and I came across an old question asking to give an algorithm that runs in [TEX]O(logn)[/TEX] and deletes an arbitrary element from an [TEX]n[/TEX] element [B]Min-Heap[/B] if given its index. I was thinking the right approach would be to use Hash table for …

Is Optical Character Recognition a good example/application of Data Mining techniques ? or Should Data Mining be applied mainly to web research/web tools ??? Could you please give me more examples on Data Mining that could make a good project if OCR is not good ??!! Thanks ! :)

Every day on his way home, little Billy passes by his great aunt Clara Mitchum's house. Generally he stops in for a chat with his aunt and sometimes he asks for some lollies. When he does, she generally gives him some, but then adds now don't be asking for any …

With the likes of the other n2 sorting algorithms like Bubble, Selection, and Insertion which 'worst case' does 18 element compares, or so, on a 10 element array in order to get 2 elements in order, I 'sort of' found one that does this with measly 13 element compares! Though …

My boss asked me to write a PID class to control a motor today. No big deal, except that the deadline is tommorow evening. My calculus is rusty, and my vb6 is probably worse (which is the language I am to use). Anyone have a good understanding of a PID …

Hello, I am working on the following problem [CODE]You are asked to optimize a cache design for the given references. There are three direct-mapped cache designs possible, all witha total of eight words of data: C1 has one-word blocks, C2 has two-word blocks, and C3 has four-word blocks. In terms …

A certain system includes 4 Gigabytes of central memory and also employs a 768 Kbyte instruction cache each of whose lines can hold 128 instructions. How many bits would be required for the set number if this instruction cache is organized as a 4-way set associative cache?

Hello, I'm not quite sure this is the right forum to post this kind of stuff to but I'll ask anyway. So, what the title says, is there any implementation of the Logo programming language that targets the .NET Framework? By that I mean I want to be able to …

Hi, I need to do a depth first search tree for the following undirected graph: 1-2-3 |...|..| 4-5 6 |......| 7-8-9 (Sorry about the graph being so unclear, the dots are just to space the lines out). It says to start at A which I'm guessing is 1? My first …

Hi Guys. My doubts are related to Brute Force Attack but let me Tell you first that it has nothing to do with the Hacking/Cracking. So please dont block/remove my Post on this Forum. I want to study more about Brute Force Attack because it is in my Subject (i.e. …

Hi I have a Csv file in website and it gets updated every half an hour, I want to copy the csv file to database(Mysql)to visualize it can anyone help. thnx

I need help understanding the following Machine A runs a program in 10s at 400MHZ We want machineB to run the same program in 6s. Machine B will require 1.2 * clock cycle than machine A. Why is it 1.2? I can't figure it out.

Hey guys, I am to do a final year project to monitor the trading floor of the Nigerian Stock Exchange and my question is if I were to write an application what things should I consider. The application is supposed to be a stand alone but works when it connects …

Hello, I'm doing some work on Frequency Analysis and decrypting text.. Basically, this is how I think it works... You take the alphabet (as a char) [code] alphabet[26] = {'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z'}; [/code] Then you read in the string you want to analyse [code] crypt[26] = {'c', 'a', 'b', 'e', 'f', 'f', …

Hello, I am designing for work a testing environment which uses run-time randomly generated data to test our company's product. The problem is as follows: I have an inequality of the sort of x(1+y(1+z(1+p+q))) <= MAX, when x,y,z,p,q,MAX are integers, MAX is given as a method parameter and the method …

Hello everyone, I'm a student in my 4th year and i need a project idea that i can do for my Bsc.Computer Science, a project that is innovative and at the same time helpful to the society. I have a programming background in Java and Php. Kindly if any one …

Hello All, I just want to see if you have the correct answer for a homework problem. The question is to find the smallest number of entries that, when inserted in an appropriate order, will force a B-tree of order 5 to have 3 levels. I believe the answer is …

Hello, I am trying to create a program for telephone calls. i.e when a user calls a phone number, an operator picks up and ask the user for some input, the input is then validated and base on that do something else. where do i start, what programming language is …

What is Big O notation? Do you use it? I missed this university class I guess :D Does anyone use it and give some real life examples of where they used it?

Is 2n+constant a good big o notation for a sorting algorithm? I have an assignment in a comp sci class to develop the fastest sort possible and found this to be the big o notation for my algorithm. The constant is based off the highest value in the sort.

Any1 can tell me abt what are the disadvantages in OO modeling

[B]Why are programming languages dissimilar even if they go after the similar compilation procedure?[/B] [I]>>>elaborate on the compiler design part NOT on the Structure/Concept of Programming language side<<<[/I]

Ok, I am a complete noob at programming. As in I know nothing. I've made a few flowcharts, and written some pseudocode for my intro-level class, but most of that was just copying from a format within my textbook and manipulating the actual characters used for whatever I was doing. …

Hello Everyone; I am asked to draw dfd for Employee Monitoring System. Before it, there is a question about the methodology that I should use. I think it is more likely to use Waterfall model, because of the time schedules in the system. Anyway, I might be wrong, can you …

I want make a competitive study of language paradigms for my thesis .I want work with languages similar in intentions but different in paradigms ..... My initial plan is to work with Perl ,Python, Ruby any help with materials will be greatly appreciated .

Okay.. Maybe I should have put this in a different spot. The programming language I'm using is irrelevant. What I'm looking for a is a simple plain text or xml english dictionary, that actually has pronunciation, either in IPA or simplified. It MUST have pronunciation, be in plain text or …

A spindle is formed by revolving the region bounded by the graphs of y= (1/4)*[1+2e^(-x/8) *sin^(2) *((Pi*x)/4)], y=0,x=0,x=8. About the x-axis. Determine the volume of the spindle. Please show me how to do this?

Hi I want to download a file from the website ever friday evening at 5pm, Can I schedule it to do it automatically can anyone plz help :)

I've got an algorithm that at most does 1 operation for the first time a loop is run, 2 for the second, 3 for the third up to n for the nth. Essentially the sum of all numbers 1 to n is the worst case running time. or [TEX]\frac{n*(n+1)}{2}[/TEX] I …

I want to learn how to write a compiler. Can someone help with the path, what i need to be able to write a compiler. Any tutorial links? And can someone help me with becoming a system programmer. What i need and some tutorial links? thnx. egoleo.