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In mathematics, the sieve of Eratosthenes (Greek: κόσκινον Ἐρατοσθένους), one of a number of prime number sieves, is a simple, ancient algorithm for finding all prime numbers up to any given limit. It does so by iteratively marking as composite (i.e. not prime) the multiples of each prime, starting with the multiples of 2.
The multiples of a given prime are generated as a sequence of numbers starting from that prime, with constant difference between them which is equal to that prime. This is the sieve's key distinction from using trial division to sequentially test each candidate number for...
I have this obsession with esoteric programming languages. So I decided to spiff up my previous Brainfuck interpreter.
# Simple BrainF*** interpreter
# Class that stores lang variables
class Lang(object):
step = 0
cell = [0] * 30000
test_cell = [0] * 30000
pos = 0
test_pos ...
import Foundation
extension Int {
func plainEnglish (negativeSign: String = "negative") -> String {
func singleNumberName (number: Int) -> String {
switch (number) {
case 1: return "one"
case 2: return "two"
case 3: return "three"
...
dict = {}
def prime(x):
dict[1] = 2
s = x
if x in dict:
return dict[s]
else:
while s > 0:
if s in dict:
pno = int(dict[s]) + 1
break
s-=1
while s < x:
m = 1
while m <= s:
...
Here's my code:
`#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main(void)
{
int Guesses = 0;
int Guess = 0;
int correctGuess = 0;
int r = rand() % 10 + 1;
srand(time(NULL));
printf("Guess my number pls\n");
do {
scanf_s("%d", &Guess);
if (Guess == r) {
printf("Yo...
I am trying to compare RemoveAt function performance in Array and Link List.
This is my program in C#.
For Array
public T RemoveAt(int index)
{
if (index >= this.count || index < 0)
{
throw new ArgumentOutOfRangeException(
"Invalid index: " ...0
Am on generating snippets for built-in functions to know how they are executed, and is a part of my research also. i successfully completed some string handling functions,split, substring,reverse etc.. but i stuck in random numbers how they ware generated? how the RND or Random functions are work...
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i want to run my severer simultaneously on two different IP address which is coded on php can any one give me code to do so? or any thing u need to answer this question.
m having two network interface card on my machine
i m giving both ip address on config file then it is using later ip
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0
I am making a Python program that does math and physics calculations for you. It is a work in progress. This is my first programming project. The SymPy library was used for some portion of it. The code is below:
import math
import turtle
import webbrowser
from sympy import *
Planck_constant = 6...
After a short discussion in the comments here I have come to wonder whether or not a baseclass like Animal in the traditional OOP example should be marked as abstract or not.
Personally I believe it should: there is no such thing as an "animal", it is merely a term that groups certain subtypes ...
This answer looks like spam to me, but 2 weeks of vacation might have impacted my judgement. I want your feedback since flagging as spam is considered heavy handed.
Since XSLT 1.0 doesn't have a lot of convenience functions, I have had to cobble them myself. The below capitalizes "words" in a string as defined by a string of delimiters. Is there any way to improve it?
<?xml version="1.0"?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
...
public static int min(int a, int b, int c)
{
int result = 0 ;
if( a < b && a < c && b < c) result = a ;
else if( a < b && a < c && b > c) result = a ;
else if( a > b && a < c && b < c) result = b ;
else if( a < b && b > c && c < a) result = c ;
else if( a > b && b < c &&...
Problem Description
A profiler is a tool which provides information about run-time
performance of an application. Lets say. you are given output file
format of a profiler called Jensor. Jensor captures response times of
methods executed by capturing method entry and exit events. The ent...
OK, finally accepted! Here's the improved code:
#include <stdio.h>
#include <math.h>
int find_primes(int begin, int end)
{
int i;
int is_prime = 0;
int primes_counter = 0;
int primes[] = {3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97,101,103,107,109,113,1...
Is it okay to edit the question to include the improved code?
I would like to do so for the following reasons:
To share the improved code with others
To show the answering persons that I take their feedback seriously
To make sure that I understood (and implement) the feedback in the right mann...0
I've written up some generic code for a card-game and would like to hear any and all suggestions for how to improve this code further, in any way shape or form.
The code is on github or pasted directly below:
Card class:
class AbstractCard:
"""Abstract class for handling comparisons between ca...
This suggested edit attempts to format the code in the question.
Since this meta post states that it would be better to leave formatting advice as part of answer, I am inclined to reject this suggested edit.
On the other hand, the question was asked by a new user, and I have a strong feeling th...
Should we Downvote answers to old questions since they no longer support current policy, so that new users searching for answers don't find these posts and get led astray?
Example(s):
How are 'reposts' handled on Code Review?
Feel free to add other examples
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I am dealing with the following problem. I have managed to solve it however i am not sure if my solution is efficient or the best possible solution. I am always willing to learn from my mistakes. So i have posted the code below and in particular please take a look at my display() method and let...
The following three source file, is to define&test a class StackLayer.
While it was written in a need for scalable Layer based architecture design,
it was also a practice for shared_ptr ( I'm new to c++11 )
I'm not sure if I'm understanding the concept and best practices for weak_ptr and share...0
This seems like a popular topic lately, so I took a crack at it.
Related questions are Number to Words and Converting a number to the text representation.
I used this article as a guideline. The article mostly explains by example, but some key points were:
Use a hyphen to separate numbers lik...
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-1
This weekend I worked on a Sudoku Solver (Ruby quiz) based on a backtracking algorithm. The sudoku is loaded in an array sudoku_arr of 81 integers (9x9 grid) where 0's are empty spots. There is a valid? method which checks if the sudoku_arr can be a valid sudoku.
The official backtracking algor...
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