gwang

# Using Windows SAPI 
require 'win32/sapi5'
include Win32

v    = SpVoice.new
data = Hash.new
(0..12).each { |i| 
  (0..12).each { |j| 
    p = i*j 
    data[p] = Array.new if data[p].nil? 

gwang

{0 {{0 0} {0 1} {0 2} {0 3} {0 4} {0 5} {0 6} {0 7} {0 8} {0 9} {0 10} {0 11} {0 12} {1 0} {2 0} {3 0} {4 0} {5 0} {6 0} {7 0} {8 0} {9 0} {10 0} {11 0} {12 0}}}
{1 {{1 1}}}
{2 {{1 2} {2 1}}}
{3 {{1 3} {3 1}}}
{4 {{1 4} {2 2} {4 1}}}
{5 {{1 5} {5 1}}}
{6 {{1 6} {2 3} {3 2} {6 1}}}
{7 {{1 7} {7 1}}}
{8 {{1 8} {2 4} {4 2} {8 1}}}
{9 {{1 9} {3 3} {9 1}}}

gwang

def permutation(data, used=nil, prev='')
    	used = Array.new(data.size) if used == nil

	(0..data.size-1).each do |i|
		result = prev
		if used[i] == false || used[i] == nil 
			used[i] = true
			result += data[i]
			if result.length == data.size 
				puts result

gwang

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

void reverse(char *data, int start, int end)
{
  int i; char tmp;

  for (i=0; i<(end-start)/2; i++)
    {
      tmp = data[i+start];

gwang

#include <string>
#include <iostream>

using namespace std; 

void reverse(string s)
{
	cout << "input = " << s << endl; 
	cout << "size = " << s.length() << endl; 

gwang

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

int combine(int n, int m)
{
	int s1, s2, i; 
	s1=s2=1; 

	for (i = m+1; i<=n; i++)   s1 *= i;
	for (i = 1; i<=(n-m); i++) s2 *= i; 

gwang

Problem

The MarkdownEditing plugin by default use a theme that becomes annoying when your sublime system theme is of a dark one such as Centurion. More problematic, the plugin's default settings are not editable since it was not automatically saved in the file sysetm c:\Users\username\Appdata\Roaming\Sublime Text 3\Packages.

Fix

1. Install the PackageResourceViewer plugin
2. ctrl+shift+p and type prv to bring the PackageResourceViewer up, find MarkdownEditing and hit return. Now the setting files are saved in the file system.
3. Open c:\Users\username\Appdata\Roaming\Sublime Text 3\Packages\MarkdownEditing\Markdown.sublime-settings, and make the following changes:

gwang

{
	"in_process_packages":
	[
	],
	"installed_packages":
	[
		"AdvancedNewFile",
		"Alignment",
		"All Autocomplete",
		"Autoprefixer",

gwang

1. Rails Casts;
2. Codecademy has a few Ruby and RoR classes;
3. Mit Ruby Class
4. And releted resources

gwang

/**
 * Created by gwang2 on 8/24/2015.
 * The code was based on the book "The ThoughWorks Anthology 2" with a minor bug fix. (see comments below)
 */

class XmlBuilder {
	Str content
	Int indent
	new make() { this.content = ""; this.indent = 0}