[hash] Forum Topics

Ok guys i have a few questions about implementing a gneric hash table using linear probing. Ok first, i need to make an entry class Entry<K,V> then An Entry <K,V> table array but since its gneric must initiatied elsewhere my question is how does the class entry work , from …

Hi, I'd like to create a perl script that takes two input files, one being a master list of users/attributes, the other being a newly uploaded list. I'd like two output files, one being a file with new users (not in the master list) as well as updated users (changed …

This is homework. I am trying to implement a Dictionary ADT using a hash-table with a closed addressing scheme. The problem is that I'm required to make a hash table of Word classes. How can I do this? The class has to be templated. Here is what I have so …

Hi how I can read md5 hash from textfile and compare it with other md5 hash. I know that MessageDigest.isEqual() is right method for me but how to get the hahs from file without changing it. I can read it to String but if I use getBytes() method it obviously …

Hi there, I am trying to customize a Woothemes shortcode toggle in their 'Canvas' theme, and in my particular case I have two toggles on my Wordpress page. One toggle shows by default, the other is hidden. What I want to do is switch those toggle states around (open the …

The hash table stores phone numbers and names, uses the names as the keys. The problem I have is when I use the terminal window to enter the names and numbers. The strange problem that occurs then is that all the names get the same phone number. But when i …

The language i'm trying to do this in is c++ let's say i have a number 123456 , i want to divide this up into partitions of two so i would have: 12,34,and 56. I want to add the partitions up and it would equal 102. How can this be …

#include<iostream> using namespace std; int main() { int Partnumber[15] = {112,130,156,173,197,150,166,113,123,143,167,189,193,117,176}; int Quantitynumber[15] = {12,30,56,17,19,50,66,13,12,14,16,18,19,11,76}; int hashTable[19][2]; int collisions = 0; int index = 0; for(int i = 0; i<15;i++) { index = (Partnumber[i] % 19); hashTable[index] = Partnumber[i]; if (hashTable[index] != 0) { do{ index++ }while(hashTable[index]!=0) } if(index >= …

Hi, I've got a problem to average lines which have same name. For exemple: > Strawberries 10 15 14 20 Pineapples 14 17 2 18 Apples 4 12 24 18 Strawberries 20 12 13 24 I would like to average values by fruit name. So, for pineapples, that easy, it's …

So I've been working on a Hash Table that uses nodes to store data. I'm having issues figuring out the copy constructor and assignment operator overloader. In my main I instantiate 3 hash tables. 1 default(size 10), 1 size 7 and another one that copies hashtable size 7 to it. …

My Captacha module uses lines like this, to vary colors. my @l_colors = qw(#338833 #33AAAA #AA33AA #AA3333 #3333AA); My error log gets cluttered with: FCaptcha.pm: Possible attempt to put comments in qw() list at FCaptcha.pm line 21., Quotes don't work, neither does \#. Any thoughts what I can do to …

Hey guys. I'm new to this site. I just wanted someone to look over the code I have so far for a hash table that operates on linear probing. I don't have anyone to really check these things for me as my professor is always busy. Can anyone tell me …

Ok, I've been trying to wrap my head around this code for the longest time today, and I've tried to look up multiple web pages on how to solve my issue in a different way, but it's no use. There's something that Im not seeing that separates a regular array, …

Hi! I'm working on a Perl code since two weeks without found anything so, I'm asking for your help. I have two files: The first is like this: [CODE] 141374_at AttA 141559_at sec5 141691_at spz 141930_at imd [/CODE] These datas were selected before according to a criteria. And the second …

I have the following hashed structure [CODE]$chainStorage{$R1}{$S1}{$C1}{@A1}[/CODE] [QUOTE]$chainStorage = { 'ACB' => { 'E' => '06' => [100, 200, 95] 'B' => '23' => [20, 1000, 05, 30] }, 'AFG' => { 'C' => '24' => [18, 23, 2300, 3456] }, 'HJK' => { 'A' => '12' => [24, 25, …

Hello all. I am making an application like an antivirus, My question is that I am able to detect the infected hash value, can I delete or remove this infected hash value from this file? Thanks n Regards.:cool:

I have some stock market price data organized as follows in a structure: struct PriceInfo { string Date; unsigned int Time; double Open; double High; double Low; double Close; unsigned int Volume; }; This struct organizes price data per interval of date and interval of time, where time is measured …

program on hash table

Hello - This is my first perl scripting try. I am trying to read a file into a hash so i can track it by id the file looks like this: ID FILNAME SIZE 1 logfilename 346202741018308 2 logfilename 0261512802421464 3 logfilename 612262297692848 4 logfilename 3268022049187 5 logfilename 888755246426701 6 …

So I am working on a small project. A video game uses a scripting engine called LUA so people can create their own UI modifications in game. Which is why I am also using LUA. I am trying to convert this LUA function into a VB.NET function and... [ICODE] local …

Hi, I am trying to use a hash table to sort the two string words from an input file ,display words and again put them back to an output file. so if this is my input in input.txt: thank Merci yes oui hello bonjour the sorted output in output.txt will …

Hello, I'm trying to implement the SHA1 hashing algorithm in VB.NET. (Pseudocode [URL="http://en.wikipedia.org/wiki/SHA-1#SHA-1_pseudocode"]here[/URL].) In particular I don't quite understand this line: [CODE]'break chunk into sixteen 32-bit big-endian words w[i], 0 ≤ i ≤ 15 for i from 16 to 79 w[i] = (w[i-3] xor w[i-8] xor w[i-14] xor w[i-16]) leftrotate …

Dear Friends, I have a question in security programming. As all of us know, when we have a database with passwords or anything sensitive, we would like to encrypt it so it is not readable by other. Now I want to know, which of the method is secured or less …

[B]Hi guys!!... I am just looking for some startup guidance with a program I am supposed to write.. it goes like this ->[/B] A program which compares these three hashing methods: 1) open addressing with linear probing, 2) open addressing with quadratic probing, and 3) separate chaining. Input will come …

Im making a separate chaining hash table for dictionary words. In my insert method i use find to make sure there isnt a duplicate. Every thing compiles but my program stops at the find statement and quits working. If i omit the find method, which ok for the first word …

Hi all! I am working on making a dashboard for the inventory of our trucks. I'm having some problems with figuring out how to calculate the percentage of the total SUM of trucks per MAKE without running two different queries. You can see below what I have working this far, …

Im trying to use a regular expression backreference to reference a hash key. Here's an example of the non working code so you can see what I'm trying to achieve (I hope!): [CODE] $str="String of text containing item1 and item2"; $x['item1']="Item 1"; $x['item2']="Item 2"; $str=preg_replace("/item1/","$x[\${1}1]",$str); print $str; [/CODE] I want …

Polynomial hash code in hashing is used to convert character strings to numerical values. Use Horner’s rule to implement this algorithm, and also perform the character conversion using ASCII format. Conduct experiments to study the collision rates for this hash code by using different values (prime or non-prime numbers) for …

Dear friends, hello to you all as this is my first thread - question to the forum. This is my problem, which is a school exersize: I create a linked list which contains three numbers r,c,d per node From this list I have to create a hash table htable[7] with …

[B]This is a homework question[/B] I am attempting to write a hash function that will evenly distribute 20 randomly selected census name into 20 buckets. I may have up to three collisions of two each. [CODE] public int hashCode(Contact c) { // TODO Auto-generated method stub int result = 0; …