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| author | James Smith <js5@sanger.ac.uk> | 2021-11-04 17:11:27 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-11-04 17:11:27 +0000 |
| commit | 889275a8b4b02ddd5e0b3c23cdaaa4c9811a84e2 (patch) | |
| tree | a21a9e750480cd7a31fea2269376dcd0215087a7 | |
| parent | 51dca5ac55f79545b8e04d9a7298e7cbacaa9872 (diff) | |
| download | perlweeklychallenge-club-889275a8b4b02ddd5e0b3c23cdaaa4c9811a84e2.tar.gz perlweeklychallenge-club-889275a8b4b02ddd5e0b3c23cdaaa4c9811a84e2.tar.bz2 perlweeklychallenge-club-889275a8b4b02ddd5e0b3c23cdaaa4c9811a84e2.zip | |
Update README.md
| -rw-r--r-- | challenge-137/james-smith/README.md | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/challenge-137/james-smith/README.md b/challenge-137/james-smith/README.md index b32381ed19..a70002eab8 100644 --- a/challenge-137/james-smith/README.md +++ b/challenge-137/james-smith/README.md @@ -164,7 +164,13 @@ say $_ foreach sort { $a <=> $b } keys %lychrel; Using this script to generate all candidate Lychrel numbers up to 1 million took approximately `12` seconds. To use the `lychrel_large` routine took approximately 2180 seconds (36 minutes 20 seconds), a speed gain of approximately `180x`. -To 10 million the time taken was approximately 6 minutes. +To 10 million the time taken was approximately 1 min 40s; 20 million ~ 3 min 50s; 30 million ~ 31 min 40s {I think the time for this got large as the machine was starting to hit SWAP storage}. The code fails shortly after this as memory and swap was exhausted ~ 12GB. + +| N | Lycrhel < N | Time taken | +| ---------: | ----------: | ---------: | +| 10,000,000 | 2,010,871 | 1 min 40s | +| 20,000,000 | 4,521,930 | 3 min 50s | +| 30,000,000 | 7,177,742 | 31 min 40s | ### Explanation |