A Good Guess
Three searches for the same route. One is careful, one is clever, and one is fast and wrong.
Page 7 of 9
Days 30 to 19
- 30
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Same Grey Twice
Two patches, one grey value, byte for byte. They do not look the same, and joining them into one bar does not help.
- 28
One String
A buffer of noise and a two-sample average. That is a plucked string, and it cannot be tuned properly, for a reason you cannot fix.
sound - 27
The Fastest Way Down
Three beads, three ramps, same start and finish. The straight one loses badly.
- 26
The Sound Of Sorting
Four algorithms doing the same job, with their comparison counts checked against the theory that predicts them.
sound - 25
Eight Bits Of Weather
A row of cells, eight bits of rule. One draws Pascal's triangle, one makes usable random numbers, and one is powerful enough to compute anything at all.
- 24
Circles All The Way Down
Draw any closed shape and it turns out to be a stack of rotating circles. Provably, and with a receipt.
- 23
One More Digit
Throwing darts at a circle finds π in seconds, then spends the rest of eternity finding the next decimal place.
- 22
Edges That Are Not There
Eight flat grey strips. You will see a bright line and a dark line at every boundary, and I can prove neither exists.
- 21
One Stream Or Two
High, low, high, rest. Either a galloping rhythm or two separate beeping lines, and near the boundary, both.
sound - 20
Hidden In Plain Sound
A loud tone does not make its quiet neighbour quieter. It makes it not exist. This is why MP3 works.
sound - 19
Hollow
Add a sound to a copy of itself a millisecond late and specific frequencies vanish, at places you can calculate exactly.
sound