473,769 Members | 6,107 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Random Numbers and Removing only 1 item at a time

I have a double-linked list. I need to insert RANDOM numbers into it. The
rand() function doesn't put "random" number in the list, in the sense that
every time you run the program it should produce new numbers. Also, I need
to know if it is possible to remove just one of an item, instead of all that
match the given criteria with the remove command. Any thoughts?
Dec 8 '05 #1
2 1475
deanfamily <de********@ver izon.net> wrote:
I have a double-linked list. I need to insert RANDOM numbers into it. The
rand() function doesn't put "random" number in the list, in the sense that
every time you run the program it should produce new numbers.


Are you seeding the random number generator? Look up srand().

--
Marcus Kwok
Dec 8 '05 #2
"Marcus Kwok" <ri******@gehen nom.net> wrote in message
news:dn******** **@news-int.gatech.edu. ..
deanfamily <de********@ver izon.net> wrote:
I have a double-linked list. I need to insert RANDOM numbers into it.
The
rand() function doesn't put "random" number in the list, in the sense
that
every time you run the program it should produce new numbers.


Are you seeding the random number generator? Look up srand().

--
Marcus Kwok


I didn't know of that until you mentioned it, but I just implemented it in
my code, and it works just fine. Thanks for the idea.
Dec 8 '05 #3

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

10
11960
by: Nicholas Geraldi | last post by:
Im looking for a decent random number generator. Im looking to make a large number of random numbers (100 or so, if not more) in a short period of time (as fast as possible). the function i was using to get random numbers was Random rn = new Random(System.currentTimeMillis()); but it seems that the system doesn't update the milliseconds often enough to cause a true randomaziation (i ran just the System.currentTimeMillis() in a
21
23170
by: Andreas Lobinger | last post by:
Aloha, i wanted to ask another problem, but as i started to build an example... How to generate (memory and time)-efficient a string containing random characters? I have never worked with generators, so my solution at the moment is: import string import random random.seed(14)
10
2505
by: Virus | last post by:
Ok well what I am trying to do is have 1.) the background color to change randomly with 5 different colors.(change on page load) 2,) 10 different quotes randomly fadeing in and out in random spots on the webpage. with a delay timer on them, so they keep changing as the page is open. Not random each time the page is loaded. If anyone can help it would be greatly appreaciated, I have tried many of
16
4228
by: Jason | last post by:
Hi, I need a way to use random numbers in c++. In my c++ project, when using the mingw compiler I used a mersenne twister that is publicly available and this did its job well. Now I have shelled out on VC++ 6.0 compiling that same code is proving difficult. I am not too worried how I generate random numbers in c++, as long as it is sufficiently random. Can anybody help me out in getting what I want from VC++?
104
5186
by: fieldfallow | last post by:
Hello all, Is there a function in the standard C library which returns a prime number which is also pseudo-random? Assuming there isn't, as it appears from the docs that I have, is there a better way than to fill an array of range 0... RAND_MAX with pre-computed primes and using the output of rand() to index into it to extract a random prime.
13
3198
by: porterboy76 | last post by:
If you only use a 32 bit seed for a random number generator, does that mean you can only ever produce a maximum of 2^32 (approx 4 billion) different sequences? What about the Mersenne Twister, with it's massive period of 2^19937-1. Will you only ever have access to a tiny portion of this ring of numbers, if you only use a 32-bit seed? Will this set of sequences be confined to the beginning of the period, ie, your sequence will have to...
13
2815
by: Peter Oliphant | last post by:
I would like to be able to create a random number generator that produces evenly distributed random numbers up to given number. For example, I would like to pick a random number less than 100000, or between 0 and 99999 (inclusive). Further, the I want the range to be a variable. Concretely, I would like to create the following method: unsigned long Random( unsigned long num )
24
7233
by: pereges | last post by:
I need to generate two uniform random numbers between 0 and 1 in C ? How to do it ? I looked into rand function where you need to #define RAND_MAX as 1 but will this rand function give me uniformly distributed and unique numbers ?
2
1813
by: blaine | last post by:
Hey everyone, Just a friendly question about an efficient way to do this. I have a graph with nodes and edges (networkx is am amazing library, check it out!). I also have a lookup table with weights of each edge. So: weights = .12 weights = .53 weights = 1.23 weights = -2.34 etc.
0
9587
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
0
9423
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
0
10211
Oralloy
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. Here is my compilation command: g++-12 -std=c++20 -Wnarrowing bit_field.cpp Here is the code in...
1
9993
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
0
9863
tracyyun
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
0
8870
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
0
5447
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
3561
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.
3
2815
bsmnconsultancy
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.