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Solution to Project Euler problem 48

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Aaron Schaefer 2008-02-02 19:42:47 -05:00
parent ac10c4067a
commit 1954114d85
2 changed files with 27 additions and 2 deletions
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extra/project-euler/048/048.factor Normal file
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! Copyright (c) 2008 Aaron Schaefer.
! See http://factorcode.org/license.txt for BSD license.
USING: combinators.lib kernel math math.functions ;
IN: project-euler.048
! http://projecteuler.net/index.php?section=problems&id=48
! DESCRIPTION
! -----------
! The series, 1^1 + 2^2 + 3^3 + ... + 10^10 = 10405071317.
! Find the last ten digits of the series, 1^1 + 2^2 + 3^3 + ... + 1000^1000.
! SOLUTION
! --------
: euler048 ( -- answer )
1000 [ 1+ dup ^ ] sigma 10 10 ^ mod ;
! [ euler048 ] 100 ave-time
! 276 ms run / 1 ms GC ave time - 100 trials
MAIN: euler048

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extra/project-euler/project-euler.factor
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@ -12,8 +12,8 @@ USING: definitions io io.files kernel math math.parser project-euler.ave-time
project-euler.029 project-euler.030 project-euler.031 project-euler.032 project-euler.029 project-euler.030 project-euler.031 project-euler.032
project-euler.033 project-euler.034 project-euler.035 project-euler.036 project-euler.033 project-euler.034 project-euler.035 project-euler.036
project-euler.037 project-euler.038 project-euler.039 project-euler.040 project-euler.037 project-euler.038 project-euler.039 project-euler.040
project-euler.067 project-euler.075 project-euler.134 project-euler.169 project-euler.048 project-euler.067 project-euler.075 project-euler.134
project-euler.173 project-euler.175 ; project-euler.169 project-euler.173 project-euler.175 ;
IN: project-euler IN: project-euler
<PRIVATE <PRIVATE