freeboson: reverie

Predicting Peak Peeping

Predicting Peak Peeping

using Distributions function simtree(color_dist, x) color_time = rand(color_dist) fall_time = rand(DiscreteUniform(color_time+1, length(x))) for i in color_time:fall_time x[i] += 1 end end function simfall(times, trees) x = zeros(Int, times) color_dist = DiscreteUniform(1, times-1) for _ in 1:trees

Guess the Jellies in the Urn

Guess the Jellies in the Urn

This week's Riddler Classic presented a problem about sampling without replacement.

Several floating colored balloons.

Case of the Missing Birth Month

Riddler Express solution for the problem of an unrepresented birth month for a group of officemates.

Top-down view of a spiral stair case

Fibonacci Fun

A Riddler Classic problem gives us an excuse to implement and benchmark Fibonacci calculations in Julia.

A Game of Dice

Dice quotient quirky quiz quickly quashed with Julia.

A (Different) Game of Dice

A (Different) Game of Dice

Extra quirks in this game… including ones not in the original puzzle!

A hand holding a camera lens in front of a stream between hills.

Hyperpolarization

How many polarized lenses make a quarter turn of polarized light with the most intensity?

Happy birthday to you! And you! And … you!

Riddler Featured

Happy birthday to you! And you! And … you!

Calculate the probability of having a three-fold birthday collision. More than 50% more difficult than your ordinary birthday collision!

The longest interstate walk

Riddler Featured

The longest interstate walk

Meandering through US states and territories with Julia, never looking back. Well, just their USPS codes.

Am I going to win the U.S. Open?

Riddler Featured

Am I going to win the U.S. Open?

Estimating the probability of winning the US Open men's and women's tournaments with Julia code and a toy model. Also an increasingly large (as I write this) exposition of Bayesian methods.

Parsing Compressed JSON Lines Across Multiple Files with Julia

coding Featured

Parsing Compressed JSON Lines Across Multiple Files with Julia

I'm new to big data. It turns out, when they say big, they're not kidding. (What follows might be completely obvious and trivial for 103% of you.) I started out writing arrays of (basically) homogeneous data by just JSON-serializing the whole thing and writing it out.

Coins on a table, one standing on edge.

Coin flip duel

Not to be flippant, but the duelist with priority pockets the change here.

A wooden ship in the sunset

Puzzle of the Pirate Booty

Swashbuckling but perfectly rational pirate adventure!