Project Euler

Link Completion date Tags
Problem 001 Tue, 19 Aug 2014, 20:11 brute force
Problem 002 Tue, 19 Aug 2014, 20:36 fibonacci
Problem 003 Tue, 19 Aug 2014, 23:35 prime
Problem 004 Wed, 20 Aug 2014, 13:27 palindrome combinations brute force timeit
Problem 005 Wed, 20 Aug 2014, 14:32 reduce divisible
Problem 006 Wed, 20 Aug 2014, 15:13
Problem 007 Wed, 20 Aug 2014, 15:40 prime nth prime nth generator
Problem 008 Wed, 20 Aug 2014, 16:03 product reduce slice
Problem 009 Wed, 20 Aug 2014, 17:06 brute force pythagorean triplet
Problem 010 Wed, 20 Aug 2014, 20:28 primes brute force timeit
Problem 011 Sun, 31 Aug 2014, 07:39 brute force product matrix tricky diagonal
Problem 012 Sun, 31 Aug 2014, 17:07 triangular number divisors factorization prime group
Problem 013 Sun, 31 Aug 2014, 19:03 brute force sum
Problem 014 Sun, 31 Aug 2014, 19:45 collatz cache deque
Problem 015 Sun, 31 Aug 2014, 20:05 factorial grid
Problem 016 Sun, 31 Aug 2014, 20:49 c manual
Problem 017 Sun, 31 Aug 2014, 21:20 count numbers tricky
Problem 018 Thu, 4 Sep 2014, 20:38 fold reduce search
Problem 019 Fri, 5 Sep 2014, 09:56 weekdays brain brute force leap year
Problem 020 Fri, 5 Sep 2014, 10:42 factorial
Problem 021 Fri, 5 Sep 2014, 14:39 amicable sieve of eratosthenes factors timeit
Problem 022 Fri, 5 Sep 2014, 15:24 sorting lexicographical order
Problem 023 Thu, 5 Nov 2015, 14:48 perfect number abundant factors
Problem 024 Thu, 5 Nov 2015, 16:04 permutation
Problem 025 Fri, 5 Sep 2014, 14:57 fibonacci
Problem 026 Mon, 9 Nov 2015, 22:11 reciprocal division nominator denominator
Problem 027 Mon, 21 Aug 2017, 21:11 quadratic primes formula brain
Problem 028 Wed, 23 Aug 2017, 15:54 spiral diagonals
Problem 029 Fri, 25 Aug 2017, 10:03 distinct powers
Problem 030 Fri, 25 Aug 2017, 12:13 digit powers brute force
Problem 031 Fri, 25 Aug 2017, 13:02 recursion coins
Problem 032 Wed, 30 Aug 2017, 14:25 pandigital products
Problem 033 Mon, 12 Feb 2018, 17:29 gcd curious faction
Problem 034 Mon, 12 Feb 2018, 17:57 factorial brute force
Problem 035 Tue, 13 Feb 2018, 09:14 circular combinations
Problem 036 Fri, 11 May 2018, 02:38 palindrome brute force
Problem 037 Sun, 13 May 2018, 16:46 primes truncated
Problem 038 Sat, 19 May 2018, 23:45 concatenated product pandigital
Problem 039 Sun, 20 May 2018, 21:16 triangle right integer
Problem 040 Sun, 20 May 2018, 00:40 champernowne product fraction
Problem 041 Wed, 19 Dec 2018, 20:14 pandigital prime fermat test
Problem 042 Thu, 20 Dec 2018, 16:14 triangle words
Problem 043 Fri, 21 Dec 2018, 16:28 pandigital divisibility permutations
Problem 044 Sat, 22 Dec 2018, 22:57 pentagonal brute force improve
Problem 045 Sat, 22 Dec 2018, 23:17 triangular pentagonal hexagonal
Problem 046 Sat, 22 Dec 2018, 23:39 prime goldbach composite square fermat
Problem 047 Sun, 23 Dec 2018, 00:24 trial division prime brute force
Problem 048 Sun, 23 Dec 2018, 00:32 brute force self power
Problem 049 Sun, 23 Dec 2018, 01:10 permutations primes sequence
Problem 050 Sun, 23 Dec 2018, 02:38 brute force consecutive primes search
Problem 051 Sun, 23 Dec 2018, 23:47 prime combinations replacement
Problem 052 Mon, 24 Dec 2018, 02:32 digits permutations
Problem 053 Mon, 24 Dec 2018, 23:29 combinatoric selection factorial airplane
Problem 054 Mon, 24 Dec 2018, 23:30 poker airplane
Problem 055 Mon, 24 Dec 2018, 23:32 lychrel airplane
Problem 056 Mon, 24 Dec 2018, 23:33 power brute force
Problem 057 Mon, 24 Dec 2018, 23:35 square root gcd airplane fractions
Problem 058 Sat, 29 Dec 2018, 09:00 prime fermat spiral diagonal todo
Problem 059 Sat, 5 Jan 2019, 00:10 xor cipher encryption
Problem 060 Sun, 6 Jan 2019, 05:00 prime pairs
Problem 061 Sun, 6 Jan 2019, 05:32 search cyclic
Problem 062 Sun, 6 Jan 2019, 05:47 cubes
Problem 063 Sun, 6 Jan 2019, 06:17 powers
Problem 064 Tue, 22 Jan 2019, 05:10 fractions square roots sequence periodic
Problem 065 Wed, 23 Jan 2019, 05:54 expansion e sequence
Problem 066 Mon, 28 Jan 2019, 21:08 diophantine equation pell's equation
Problem 067 Fri, 5 Sep 2014, 07:36 reduce triangle