Name Completion date Link Tags
Problem 001 Tue, 19 Aug 2014, 20:11 Problem 001 brute force
Problem 002 Tue, 19 Aug 2014, 20:36 Problem 002 fibonacci
Problem 003 Tue, 19 Aug 2014, 23:35 Problem 003 prime
Problem 004 Wed, 20 Aug 2014, 13:27 Problem 004 palindrome combinations brute force timeit
Problem 005 Wed, 20 Aug 2014, 14:32 Problem 005 reduce divisible
Problem 006 Wed, 20 Aug 2014, 15:13 Problem 006
Problem 007 Wed, 20 Aug 2014, 15:40 Problem 007 prime nth prime nth generator
Problem 008 Wed, 20 Aug 2014, 16:03 Problem 008 product reduce slice
Problem 009 Wed, 20 Aug 2014, 17:06 Problem 009 brute force pythagorean triplet
Problem 010 Wed, 20 Aug 2014, 20:28 Problem 010 primes brute force timeit
Problem 011 Sun, 31 Aug 2014, 07:39 Problem 011 brute force product matrix tricky diagonal
Problem 012 Sun, 31 Aug 2014, 17:07 Problem 012 triangular number divisors factorization prime group
Problem 013 Sun, 31 Aug 2014, 19:03 Problem 013 brute force sum
Problem 014 Sun, 31 Aug 2014, 19:45 Problem 014 collatz cache deque
Problem 015 Sun, 31 Aug 2014, 20:05 Problem 015 factorial grid
Problem 016 Sun, 31 Aug 2014, 20:49 Problem 016 c manual
Problem 017 Sun, 31 Aug 2014, 21:20 Problem 017 count numbers tricky
Problem 018 Thu, 4 Sep 2014, 20:38 Problem 018 fold reduce search
Problem 019 Fri, 5 Sep 2014, 09:56 Problem 019 weekdays brain brute force leap year
Problem 020 Fri, 5 Sep 2014, 10:42 Problem 020 factorial
Problem 021 Fri, 5 Sep 2014, 14:39 Problem 021 amicable sieve of eratosthenes factors timeit
Problem 022 Fri, 5 Sep 2014, 15:24 Problem 022 sorting lexicographical order
Problem 023 Thu, 5 Nov 2015, 14:48 Problem 023 perfect number abundant factors
Problem 024 Thu, 5 Nov 2015, 16:04 Problem 024 permutation
Problem 025 Fri, 5 Sep 2014, 14:57 Problem 025 fibonacci
Problem 026 Mon, 9 Nov 2015, 22:11 Problem 026 reciprocal division nominator denominator
Problem 027 Mon, 21 Aug 2017, 21:11 Problem 027 quadratic primes
Problem 067 Fri, 5 Sep 2014, 07:36 Problem 067 reduce triangle