How to live in the Kingdom of Nouns, why mathematicians cry, filling gaps in algorithms, portion of clojure, STM, HTTP and more.
Using names.txt a 46K text file containing over five-thousand first names, begin by sorting it into alphabetical order. Then working out the alphabetical value for each name, multiply this value by its alphabetical position in the list to obtain a name score.
For example, when the list is sorted into alphabetical order, COLIN, which is worth 3 + 15 + 12 + 9 + 14 = 53, is the 938th name in the list. So, COLIN would obtain a score of 938 x 53 = 49714.
What is the total of all the name scores in the file?
Evaluate the sum of all the amicable numbers under 10000.
All you need to play with numbers!
Brainfuck Interpreter in two tweets.
Why your software sucks and what is the “Secret Weapon”. Also, algorithm complexities refresher, functional programming, including Scala and Clojure, concurrency and lot of humor.
Find the sum of the digits in the number 100!
How many Sundays fell on the first of the month during the twentieth century (1 Jan 1901 to 31 Dec 2000)?
Factorial function is simple enough. But there is still some fun about it. In Stirling’s Approximation article we’ve seen how to calculate good factorial approximation faster than exact value. By the way, there is an algorithm to calculate exact value of factorial faster than “by definition”.