elleryq’s gists

elleryq / tokenize.cpp

Created July 8, 2014 06:44

Split string according to space and convert each token to uppercase.

	#include <sstream>
	#include <iostream>
	#include <string>
	#include <algorithm>

	std::string toupper(std::string& s) {
	for(std::string::iterator c=s.begin(); c!=s.end(); c++) {
	c = std::toupper(c);
	}
	return s;

elleryq / checksum.c

Created July 8, 2014 06:48

For each 512 bytes in the input binary file, calculate the 16-bit checksum and write the 512 bytes with the checksum as the 512th byte to the output binary file. At the end of the file, pad bytes might need to be added if the remaining byes in the input binary file is less then 512 bytes. If present, each pad byte shall be set to 0xff.

	#include <stdio.h>
	#include <stdlib.h>


	#define BUFFER_SIZE 512

	int doPadding(char* buffer, int startOffset) {
	int i;
	for(i = startOffset; i<BUFFER_SIZE; ++i) {
	*(buffer+i) = 0xff;

elleryq / tokenize.c

Created July 8, 2014 06:54

Split string according to space and convert each token to uppercase.

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	char* strupper(char* s) {
	char* t = strdup(s);
	char* p = t;
	while( *p ) {
	p = toupper(p);
	p++;

elleryq / padding.c

Last active August 29, 2015 14:03

padding example (in 64-bit machine) which is from http://www.catb.org/esr/structure-packing/

	// You wrote:
	struct foo1 {
	char *p;
	char c;
	long x;
	};

	// Actually:
	struct foo1 {
	char p; / 8 bytes */

elleryq / nullable.cs

Created August 11, 2014 02:42

Try C# Nullable. The code can be paste in LINQPad and run. If you want to run in Visual Studio or other IDE, you need to rewrite it.

	void Main()
	{
	String s = null;
	Console.WriteLine("s is {0}", s ?? "Null");

	Animal animal = null;
	Console.WriteLine("Animal is {0}", animal ?? new Animal());

	Nullable<int> i = null;
	Console.WriteLine("i is {0}", i ?? default(int));

elleryq / filter_var.php

Created September 24, 2014 02:16

用 filter_var 檢查字串是否符合 IPv4 格式，以及濾掉不合法字元。

	<?php
	echo "Hello\n";

	$successedString = "192.168.11.1";
	$valid = filter_var($successedString, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 \| FILTER_FLAG_NO_RES_RANGE);
	echo "\n1.'" . $successedString . "'" . var_dump($valid) . "\n";
	if(!$valid) {
	echo "IP is not valid\n";
	}
	else {

elleryq / get_continuous_items_count.py

Last active August 29, 2015 14:06

將連續元素分組，然後找出出現次數最多的。

	from itertools import groupby
	from collections import Counter
	from pprint import pprint

	def getContinuousItemsCount(l):
	x = [tuple(g) for k, g in groupby(l)]
	tupleCounter = Counter(x)
	s = set(x)
	d = {}
	for t in s:

elleryq / lookup_word.l

Last active August 29, 2015 14:07

lex & yacc 第一章的練習，然後改用 glib 的 GList 來做。

	%{
	#include <glib.h>
	#include <stdlib.h>
	/* token recognizer */
	enum {
	LOOKUP = 0, /* default is lookup, not add */
	VERB,
	ADJ,
	ADV,
	NOUN,

elleryq / bingo_table.py

Last active February 8, 2023 10:27

產生 Bingo 表格的程式，裏面的數字是亂數，預設一頁產生 12 個表格，結果會輸出為 PDF。參數是要產生的頁數，輸出檔案會在當前目錄下的 bingo.pdf

	#!/usr/bin/env python
	# -- coding: utf-8 --
	# Dependencies:
	# * wkhtmltopdf - Convert HTML to PDF
	# * pdftk - Merge multiple PDFs to single PDF
	# * jinja2 - Template engine
	import sys
	import os
	from itertools import permutations, izip_longest
	import random

elleryq / gist:404b5b5691a1561b3c76

Created November 17, 2014 07:37

KaggleAux (https://github.com/agconti/KaggleAux) 安裝步驟。

我是用 virtualenv，不用也可以，就忽略前3個步驟即可，virtualenv 好處是可以不用搞亂系統環境 (不安裝到 /usr, /usr/local)。

步驟：

virtualenv kaggleaux_env
cd kaggleaux_env
source bin/activate
wget https://bootstrap.pypa.io/get-pip.py
python get-pip.py
sudo apt-get install libblas-dev liblapack-dev gfortran ：這是為了 scipy 而裝的
git clone https://github.com/agconti/KaggleAux.git

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