Today’s exercise was a little tricky. It had you adding things up by multiples. Somehow the Range Enumeration function is faster than counting by twos (or similar). Of course your count was off if you got exactly to the max[…]↓ Read the rest of this entry…
Should you really be using Enumerable.Range() and other LINQ stuff when a simple FOR loop will do. No, no you should not. It is silly and makes your code harder to read. The only reason you would do that is[…]↓ Read the rest of this entry…
Todays exercise was Resistor Color Trio. Same as before except the third does a 10^n scaling factor so we can have kilo/mega/giga ohms. For the rails API backend and the modified front end from the Django book. It looks like[…]↓ Read the rest of this entry…
With today’s exercise the number of exercises I have done in the C# track now matches the count in the Python track. There are less exercises in the Python track so that track is at the half way mark. The[…]↓ Read the rest of this entry…
Today’s exercise was the Difference of Squares – the sum of numbers between 1 and max squared minus the sum of each number squared between 1 and the max. The tricky part was they wanted you to use LINQ as[…]↓ Read the rest of this entry…
My code for today’s exercise Meetup (schedule a meetup based on week of month and day of week) wasn’t particularly great. I probably could have figured out which day with some modulus arithmetic but I just iterated over the seven[…]↓ Read the rest of this entry…
Today’s exercise was to compute a scrabble score. I put the different letter values in a Dictionary, someone else used a switch case. Mine was easier to map into a LINQ query but the switch/case is probably better overall. Four[…]↓ Read the rest of this entry…
Todays exercise was to validate a phone number for correctness and return the number as digits only. This is a perfect place to use a regular expression. Years ago I would have been too timid to use them. I probably[…]↓ Read the rest of this entry…
Today’s exercise was the Collatz Conjecture. I remember the Coding Train doing a cool video on this. It has a nice visualization. I decided to also do my own visualization using python and turtle graphics (plus a Perlin Noise background[…]↓ Read the rest of this entry…
Today’s exercise was Perfect Numbers. If the sum of the factors of a number is equal to the number it is perfect. Less than and Greater than are either deficient or abundant. I have been promising myself I would make[…]↓ Read the rest of this entry…