All Questions
12
questions
3
votes
1
answer
414
views
Rock Paper Scissors without arrays and if-statements, how to reduce
As working on a little private programming challenge, I tried "Rock Paper Scissors" without arrays or if-statements. It works as intended, though, I am sure this can be done a little bit more ...
- 141
6
votes
4
answers
263
views
All your Base - Exercism.io
This is an exercise on the website Exercism. I am self taught trying to learn C# and C++. This is the information from the readme.
Convert a number, represented as a sequence of digits in one base,...
- 620
4
votes
1
answer
524
views
Solving a linear system with two variables
Background:
Equation 1: 2x-y=6
Equation 2: 4x+3y=22
Because 1 is ax-by=c and 2 is dx-ey=f
y=(a * f - c * d) / (a * e - b * d) and x is simply (c - (b * y)) / a)
What I am trying to do:
...
- 41
3
votes
4
answers
8k
views
C# Code to Find all Divisors of an Integer
I made this so I can feed it integers and return an array with all the divisors of that integer. I put checks in in case the integer is less than 2. Order of integers in the array must be smallest ...
- 620
7
votes
3
answers
3k
views
Calculator of combinations without repetition
I am interested to find an absolute value (not an approximation) of "combination without repetition" for given \$n\$ and \$k\$, or \$\binom{n}{k}\$.
The brute force solution would look like this
<...
- 922
6
votes
4
answers
612
views
Pascal Triangle calculation with BigIntegers
On a well known programming challenges website(CW) there is a Kyu2 eggs height problem that can be solved utilizing a variation of Pascals Triangles properties.
The problem asks to solve ...
- 160
4
votes
1
answer
645
views
Method to return center items in a 2D array
I wish to have code that returns the center items of a 2d grid. Because I need an average value. The code I came up with does what I want (see the unit tests beneath it). But I think the code is ugly ...
- 167
2
votes
2
answers
672
views
10
votes
2
answers
248
views
Resizing a discrete uniform CSRNG distribution
I have a requirement to generate a uniform distribution of cryptographically secure random numbers. To generate these numbers I only know of the ...
- 43.4k
7
votes
2
answers
182
views
Sum of the reciprocals of whole numbers adding to one
I have written some code which works out which sums of reciprocals of whole numbers sum to one, e.g:
\$\frac 12 +\frac 13 +\frac 16 =1 \$
\$\frac 17 +\frac 18 +\frac 19 + \frac1{10} + \frac1{11}+ \...
- 71
2
votes
1
answer
4k
views
Generating Pandigital Numbers
A Base10 Pandigital Number is a number which uses all the digits 0-9 once:
1234567890
2468013579
etc...
My naive solution was just to use a bunch of nested loops to do this but it's quite slow. And ...
- 637
4
votes
1
answer
2k
views
Truncating an integer from left to right and right to left
Project Euler problem 37 says:
The number 3797 has an interesting property. Being prime itself, it is possible to continuously remove digits from left to right, and remain prime at each stage: 3797,...
- 637