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Is that a Segment Tree problem?

Juan Lopes juanplopes

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Is that a Segment Tree problem?
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@juanplopes
juanplopes / conficker_finder.cs
Created December 9, 2010 16:15
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Diagnostics;
using System.Threading;
using System.Net;
namespace ConsoleApplication8
@briandealwis
briandealwis / gist:782862
Created January 17, 2011 13:55 — forked from spullara/gist:782523
One-liner to turn jar with Main-Class into executable shell script
# turn a jar with a Main-Class into a stand alone executable
(echo '#!/usr/bin/env java -jar'; cat blahblah.jar) > blah
# turn a jar with a particular main clas into a stand alone executable
(echo '#!/usr/bin/env java -jar package.MainClass'; cat blahblah.jar) > blah
@tarsisazevedo
tarsisazevedo / euler-12.py
Created July 8, 2011 04:50
euler 12
from unittest import TestCase, main
import math
class TestNumerosTriangulares(TestCase):
def test_numero_28_deve_ter_5_divisores(self):
"""docstring for test_numero_28_deve_ter_5_divisores"""
self.assertEquals(primeiro_numero_triangular_com(divisores=5), 28)
def test_numero_x_deve_ter_500_divisores(self):
"""docstring for test_numero_x_deve_ter_500_divisores"""
@mauricio
mauricio / java-launcher.c
Created April 5, 2012 12:48
/*
* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
@darkhelmet
darkhelmet / balance.go
Created June 16, 2013 05:05
Simple TCP load balancer in Go.
package main
import (
"flag"
"io"
"log"
"net"
"strings"
)
@juanplopes
juanplopes / gist:6553969
Created September 13, 2013 17:59
Script em Python para gerar um ~/.m2/settings.xml com token de acesso a repositório no GitHub.
#!/usr/bin/env python
import httplib, getpass, base64, json, datetime, sys, xml.etree.ElementTree as ET, os.path as path, os
KEY = 'your-private-repo'
NS = {'n':'http://maven.apache.org/SETTINGS/1.0.0'}
def make_auth(username, password):
return base64.b64encode('{}:{}'.format(username, password))
def make_token(repokey, username, password):
@juanplopes
juanplopes / rsa.py
Last active July 14, 2023 17:35
RSA by example
from random import randint
#----Step 1
# First, choose two random primes.
# In real world, they should be really big primes (hundreds of digits).
p, q = 41, 47
#----Step 2
# From them we have n=p*q and phi(n)=(p-1)*(q-1).
@debasishg
debasishg / gist:8172796
Last active March 15, 2024 15:05
A collection of links for streaming algorithms and data structures

General Background and Overview

  1. Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
  2. Models and Issues in Data Stream Systems
  3. Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
  4. Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
  5. [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t
@juanplopes
juanplopes / Main.java
Created January 22, 2014 13:41
Using Count-Min Sketch to find stream's quantiles with small memory footprint.
QuantileSketch sketch = new QuantileSketch();
for (int i = 0; i < 100000000; i++) {
double x1 = Math.random();
double x2 = Math.random();
//random normal distribution with mean=0 and stdev=1
sketch.offer(abs(sqrt(-2 * log(x1)) * cos(2 * Math.PI * x2)));
}
for (int i = 0; i <= 100; i++) {
@juanplopes
juanplopes / convexhull01.html
Last active August 29, 2015 13:56
Revised @ElemarJR's Convex Hull (using Monotone Chain)
<!doctype html>
<html>
<head>
<title>ConvexHull 01</title>
<style type="text/css">
* {
margin: 0;
padding: 0;
}