Sunday, December 13, 2009


NPR Sunday Puzzle Plus

The NPR Sunday Puzzle this week was a fun one to solve.
Name five two-digit numbers that are evenly spaced out — like 32, 34, 36, 38 and 40 — in which all 10 digits from 0 to 9 are used once each. What numbers are these?
I overheard it while trying to get back to sleep. Drifting in and out of consciousness I figured it out in about 10 minutes. For fun (seriously), I coded a solution to the problem. It turns out there are 4 correct answers, all of which begin or end with a multiple of 10.

Then I figured out the same thing for 5 four digit numbers in which the digits from 0 to 9 appear twice. I found 618 solutions. My favorites used 1111 as the increment, three of which contained the solution to the first puzzle.

Sunday, December 06, 2009


Chrome extensions for more compact, netbook friendly Gmail and Google Reader

Earlier I posted user scripts for making Gmail and Google reader a more compact. It appears that Google Chrome no longer likes user scripts, so I repackaged them as Chrome Extensions. As before, let me clearly state that these are built on the hard work of others; I just tweaked them a bit to my taste.

Leif Wickland Google Reader Clean and Mean

Leif Wickland Google Reader Ad Remover

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