Programming :: Prime Number Using Sieve Of Atkin?
Aug 15, 2010writing a program to find the prime numbers.i came to know that sieve of atkin is the most efficient algo to find the prime numbers.i am finding difficult to understand it
View 3 Replieswriting a program to find the prime numbers.i came to know that sieve of atkin is the most efficient algo to find the prime numbers.i am finding difficult to understand it
View 3 RepliesI am trying to run Wattch simulator in linux.But it is giving the error below. what is this error and what do I do about it?
fatal: bad magic number in executable `prime' (not an executable?)
I'm trying to write a program that generates a random number and then tells if it is prime or not. I have doe some research about how to calculate prime and random numbers but I'm still having trouble. I don't really get how to calculate a prime number. I know a prime number is a number that is divisible by 1 and and itself. how to calculate a prime number in C?
View 10 Replies View RelatedI'm trying to solve this problem, but always get Time limit exceeded. I've tried my best but still can't get under time limit. Could you please give me some hint about it?
Code:
#include <iostream>
#include <cmath>
[code]...
Delivery via docevot lda works for the virtual users.
Sending a mail that should be redirected to a folder instead of going to the INBOX does not work
Code: Select allecho "lala" | mail -s beispiel julius@myvirtualdomain
#/home/vmail/julius@myvirtualdomain/.dovecot.sieve
Code: Select all
require "fileinto";
if header :contains "subject" ["beispiel"] {
fileinto "beispielordner";
} else {
# The rest goes into INBOX
# default is "implicit keep", we do it explicitly here
keep;
}
I can see no errors in dovecot.log, -info.log, -debug.log but also no sieve messages
Code:
Select all
#/etc/dovecot/conf.d/15-lda.conf
protocol lda {
postmaster_address = julius@localhost
mail_plugins = $mail_plugins sieve
[Code] .....
I'm having a problem getting sieve to work with dovecot on 10.04. Even weirder, when I try to compile the following script with sievec
Code:
require ["setflag","fileinto"];
if header :contains "X-DSPAM-Result" "Spam" {
setflag "\Seen";
fileinto "Junk";
[Code]...
edit: found the mistake, should've required imap4flags instead of setflag.
The first filter does not work, the second does...why?
Code: Select allelsif allof (
body :contains ["some text", "Some Text"],
address :domain :is "From" "amazon.de"
)
{
redirect "someemail@gmx.net";
}
elsif allof (
body :contains ["some text", "Some Text"],
address :domain :is "From" "yellowstone.bohlsen.lan"
)
{
redirect "someemail@gmx.net";
}
I even saved the amazon.de email from thunderbird as .eml and used it as a testmail to check the second filter
Code: Select allcat /tmp/amazon-main | mail mylocalusername@yellowstone.bohlsen.lan
that worked without problems.
the amazon email address that is sending me mails is:
Code: Select allbestellbestaetigung@amazon.de
#hostname -f
yellowstone.bohlsen.lan
Twice today, and several times recently, I have had a sudo command rejected with the dreaded message "<user> is not in the sudoers file..." It's because my user -- which is the main user, the one you create on Ubuntu installation -- has "fallen out of" the admin group. I can fix it because there are other users defined which are still in the admin group and I can su to one of them and add myself back.But why is it happening? I'm doing software development, and use sudo mainly to do benign things like copying new versions of Perl programs into the application library: I'm not going anywhere near the security subsystem, for instance. I'm worried that one day whatever-it-is will choose to drop all the users out of admin and then I'll have to resort to live CD hacking to fix it.
View 3 Replies View RelatedI have some code that opens a directory and reads in the names of files which are e.g. 0001, 0002, 0003 up to 9999I need to get all these numbers and then generate a new number that is not one of these numbers already.here is my code to check the files in the directory
DIR *d;
struct dirent *dir;
int i = 0;
[code]....
But what is the easiest way to figure out the Unicode number of a character when you already have the character?
For instance, I pasted this character here from a PDF:
Anybody knows How can I get the number of cores of a machine?I know that I can use POPEN and get the stream of this:
Code:
grep -i 'processor' /proc/cpuinfo | wc -l
But, I think that a simple method to do this.
i want to generate random number in c programming from -1 to 1
View 1 Replies View Related1) I need to search a field value to check for exact 0. If the number is 0, it should throw error.
The line to be searched looks like as below. "Output Rows [1], Affected Rows [1], Applied Rows [1], Rejected Rows [0]"
Here I have to search whether the affected rows is 0. But the code below picks up other values also (lie 10, 20.. etc). How do we write to get an exact match for 0? Code: affected=`echo ${line} | cut -f6 -d" " `
affectedcount='echo ${affected} |grep 0 ` 2) Also, I need to check whether the rejected rows > 0
Code: rejected=`echo ${line} | cut -f12 -d" " `
rejectedcount='echo {rejected} |grep [1-9]`
3)Can we combine these two statements in a better way to get the desired results?
I've created (as a homework) to create as many folders as told but I still need to check if the variable is a number or not :
Code: #!/bin/sh
echo "Veuillez saisir un nombre"; read nmbr
nmbrf=$nmbr
while [ $nmbrf -gt 0 ]
do mkdir -p "foo$nmbrf"
nmbrf=`expr $nmbrf - 1`
echo "$nmbrf"
how do I check that nmbr is a number or something else?
I try to get the absolute value of a floating number but i could not until now. I am using bash script btw.lets say A is a floating number:A=-0.125
Code:
absA=$(echo '$A' | nawk '{print ($1>=0)? $1:0-$1}')
the above code gives absA=0, whereas
[code]....
I'm having a hard time trying to get the number of digits in a uint64_t variable. The reason I'm using this is I want to make sure I get x amount of digits inside of a variable before I use it, but since the higher the digits, the better the program is.I currently use the following code, and it works, but my loop will never exit because the length is always 0:
Code:
/**
* numbdigits()
* number: The number to evaluate [in]
*
* Returns the number of digits found in a number.
[code]....
getrand() returns a uint64_t as well (and works). The only way the while() loop ends without my intervention is if I do curd += numdigits(val) instead...but, that gives a false value as well.
I have a char*[] array:
Code:
char* myarray[] = {"Hello", "there!", "LQ"};
and I wish to use/ write a function to find the number of elements in myarray (in this case, its 3).
*equivalent of .NET's array.size() that returns number of elements in array
How do I achieve it?
I have a text file that contains the following string of numbers and letters:
Code:
Mean track length: 3.45 +/- 1.23 mm
or
Code:
Mean track length: 22.45 +/- 12.23 mm
In the first example, I would like to grab only 3.45 and write it into a new file. Then I would like to grab only 1.23 and write it into another file.
I have 80,000 files to do and those numbers can be different every time.
I want to be able to run a piece of AWK code on a record specified by number, not by a regex.
View 6 Replies View RelatedUser submits a ms word file, and the php can recognize the number of words? Is it only possible for ms win server?
View 1 Replies View RelatedHow can I know what number descriptor is used by my usb device indicate via libusb_device_handle structure ? I can't find declaration of libusb_device_handle structure. I need this information to use poll() function where I need decripttion number of device.
View 1 Replies View RelatedHow can I know what number descriptor is used by my usb device indicate via libusb_device_handle structure ? I can't find declaration of libusb_device_handle structure. I need this information to use poll() function where I need decripttion number of device.
View 4 Replies View RelatedHow can i get bc to subtract negative numbers?
View 10 Replies View RelatedIn C, how can I declare multiple variables at once where the number that needs to be declared is unknown to the programmer.For example, a program that needs to declare some number of integers, but the user will tell the program how many integers to declare. Such as:
x1
x2
x3
x4
x5
.
.
.
Where the programmer doesn't know how many need to be declare you setup theinitialization?
Goal:assign integers into array form string.
From string
"123,456,789,0123,4567,8901" (comma separated 6 integer numbers)
To array
[code]....
IS there any command to see number of threads are running in a process .I have check ps -eLf but it wont show display for all the threads
View 1 Replies View RelatedCode:
FILE_SIZE=`find /var/logs/ -type f -mtime +5 | wc -c`
im trying to convert FILE_SIZE into megabytes
[code]....
I need to write a script which will get a number from STDIN and then with that number echo a set number of questions (its for a firewall config). Heres what I want the user to receive.
How many ports do you want open? 3
1. specify port: 80
2. specify port: 21
3. specify port: 23
In the background this will echo a command out to a text file which will read as follows:
open port 80
open port 21
open port 23
I've done this before but I've completely forgotten how
I have something like this:
$arr_hash{'produce'}{'veggies'}[0] = Broccoli
$arr_hash{'produce'}{'veggies'}[1] = Cauliflower
$arr_hash{'produce'}{'veggies'}[2] = Carrots
[code]...
E.g. 98 is represented as 1100010 (number of valid bits is 7)
What is the formula to calculate the number of valid bits in a byte ?