Billy billyfung

Always looking to collaborate on interesting projects. I work with R and Python, currently dealing with electricity markets and optimisation.

billyfung / gist:33ea8e643c91e511e7f50d0cf08ee6df

Created May 19, 2020 03:54

dialpad interview q

	Your favorite uncle, Morty, is crazy about the lottery and even crazier about how he picks his “lucky” numbers. And even though his “never fail” strategy has yet to succeed, Uncle Morty doesn't let that get him down.

	Every week he searches through the Sunday newspaper to find a string of digits that might be potential lottery picks. But this week the newspaper has moved to a new electronic format, and instead of a comfortable pile of papers, Uncle Morty receives a text file with the stories.

	Help your Uncle find his lotto picks. Given a large series of number strings, return each that might be suitable for a lottery ticket pick. Note that a valid lottery ticket satisfies the following properties

	The digits must form 7 unique numbers between 1 and 59
	Digits must be used in order. This means that you cannot form a number using digit n and digit n + 10, for example. Eg: In 12345678, you can't use 1 and 3 to get 13 in your lottery pick
	Every digit must be used exactly once. This means that you cannot use one d

billyfung / gist:e68da5f5f93cf04eb6a624696c81e556

Created March 29, 2020 00:04

	December 12-29, China detects pneumonia of unknown cause in Wuhan, China.
	December 31, China informs WHO of pneumonia of unknown cause.
	January 7, China identifies that the mysterious pneumonia is caused by a novel coronavirus.
	January 8, CDC alerts US clinicians of respiratory syndrome for those that recently traveled to China.
	January 10, Chinese researchers make a sequence of the virus public.
	January 11, First COVID-19-related death in China.
	January 17, CDC begins implementing public health screening at airports.
	January 21, US identifies the first domestic case of the novel coronavirus.
	January 23, China suspends Wuhan transportation.
	January 30, WHO declares a global health emergency.

billyfung / gist:ad8d555f930cf67466ed116667f45324

Created May 8, 2019 00:36

photography books

billyfung / gist:0a3dac63db2a70753b1f1cc04057e202

Created August 31, 2017 22:08

fread with data.table 1.10.5

	> library(data.table)
	data.table 1.10.5 IN DEVELOPMENT built 2017-08-22 22:20:41 UTC; travis
	The fastest way to learn (by data.table authors): https://www.datacamp.com/courses/data-analysis-the-data-table-way
	Documentation: ?data.table, example(data.table) and browseVignettes("data.table")
	Release notes, videos and slides: http://r-datatable.com

	> fread('demand_full.csv', verbose=TRUE)
	Input contains no \n. Taking this to be a filename to open
	[1] Check arguments
	Using 4 threads (omp_get_max_threads()=4, nth=4)

billyfung / working_holiday.txt

Last active July 13, 2017 19:12