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Ophir LOJKINE lovasoa

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@lovasoa
lovasoa / fork_bomb.rs
Created Jul 17, 2020
A process that repeatedly executes itself
View fork_bomb.rs
use std::process::Command;
use std::env;
use std::process;
use std::time::SystemTime;
use crossbeam; // 0.7.3;
pub fn main() {
let myself = env::current_exe().expect("no current exe");
let n: u64 = env::args()
.enumerate()
@lovasoa
lovasoa / mandelbrot.sql
Last active Jun 12, 2020
Mandelbrot rendering implemented in SQL
View mandelbrot.sql
WITH RECURSIVE
-- First, we define the grid we are working on
xaxis(x) AS (VALUES(-2.0) UNION ALL SELECT x+0.05 FROM xaxis WHERE x<0.5),
yaxis(y) AS (VALUES(-1) UNION ALL SELECT y+0.1 FROM yaxis WHERE y<1),
-- Then we compute the iterations of the mandelbrot function
iterations(iter, cx, cy, x, y) AS ( -- one value per iteration step per point
SELECT 0, x, y, 0.0, 0.0 FROM xaxis, yaxis -- c = cx + i * cy
UNION ALL
SELECT iter+1, cx, cy, x*x-y*y + cx, 2.0*x*y + cy -- z(iter+1) = z(iter)^2 + c. x=Re(z(iter+1)), y=Im(z(iter+1))
FROM iterations
@lovasoa
lovasoa / fibonacci.sql
Last active Jun 12, 2020
Computing the fibonacci sequence in SQL (with SQLite)
View fibonacci.sql
-- Computing the fibonaccci sequence in SQL
-- Using a common table expression
-- see: https://www.sqlite.org/lang_with.html
with recursive fibonacci (n, current, next) as (
select 0, 0, 1 -- n=0, current=fibonacci(0)=0, next=fibonacci(1)=1
union all -- Using a recursive union between the fibonacci table and itself
select n+1 as n, next, next+current -- n=n+1, current=next, next+=current
from fibonacci
)
View collatz_20.rs
use std::collections::BinaryHeap;
use std::collections::HashSet;
use std::cmp::Reverse;
fn main() {
println!("strict digraph {{");
let mut v : BinaryHeap<(Reverse<u128>, u8)> = Default::default();
let mut visited : HashSet<u128> = Default::default();
@lovasoa
lovasoa / collatz.rs
Created May 29, 2020
3n+1 conjecture in generic rust
View collatz.rs
use num::{Integer};
use std::ops::{MulAssign, DivAssign, AddAssign};
struct Collatz<T>(T);
impl<T> Iterator for Collatz<T>
where T: Integer + MulAssign + DivAssign + AddAssign + Clone,
{
type Item = T;
fn next(&mut self) -> Option<T> {
@lovasoa
lovasoa / naoned.as
Last active Mar 28, 2020
Naoned viewer image URL computation
View naoned.as
public function on_complete_load_xml(param1:Event) : void
{
var _loc3_:* = undefined;
var _loc4_:* = undefined;
var _loc7_:* = undefined;
var _loc8_:* = undefined;
var _loc9_:* = undefined;
var _loc10_:MovieClip = null;
is_authorize_mainclip = true;
var _loc2_:XML = new XML(param1.target.data);
@lovasoa
lovasoa / co2_emissions_by_energy_source.csv
Created Mar 4, 2020
co2 emission by energy source.csv
View co2_emissions_by_energy_source.csv
Source Emissions in grams per KWH
BIOMASS 230
FOSSIL_GAS 490
FOSSIL_HARD_COAL 820
FOSSIL_OIL 820
HYDRO_PUMPED_STORAGE 51
HYDRO_RUN_OF_RIVER_AND_POUNDAGE 24
HYDRO_WATER_RESERVOIR 24
SOLAR 27
WASTE 500
@lovasoa
lovasoa / download_regards.py
Created Mar 2, 2020
Téléchargement en masse d'images HD depuis le site regards.monuments-nationaux.fr
View download_regards.py
import requests
import re
s = requests.Session()
s.headers.update({'User-Agent': 'M'})
for n in range(91563, 91563+1000):
u = f'https://regards.monuments-nationaux.fr/fr/asset/id/{n}/x/idFeatureFrom/798/thumbIndex/0/mosaicCount/177/ajax/1/format/json'
h = s.get(u).json()['html']
title = re.search('<h1 title="([^"]+)"', h).group(1)
@lovasoa
lovasoa / cached_field.rs
Created Feb 18, 2020
A macro for cached computed fields in rust. Generates a function that checks the cached value of a field, and computes it if it's is not present.
View cached_field.rs
use std::fmt::Debug;
#[derive(Debug)]
struct S {
x: Option<u32>,
y: u32,
}
/// Generates a funtion named $field the returns the existing value for
/// $field in self if it's not None, and otherwise computes it in
View crack.py
"""
Solution to https://gist.github.com/lovasoa/a4efdd4f30cc0ee4cd9f0563fb7ec64e
execute with:
mkfifo fifo
python3 crack.py < fifo | python3 challenge.py | tee fifo
"""
password = ""
for i in range(64):
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