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plurals

POSorting numbers from 1 to 999,999,999 in words as strings
primarykey
Id
1495107
data
AcceptedAnswerId
1498034
AnswerCount
20
ClosedDate
CommentCount
15
CommunityOwnedDate
2009-09-29T21:40:15.013
CreationDate
2009-09-29T21:40:15.013
FavoriteCount
18
LastActivityDate
2013-01-16T16:57:45.010
LastEditDate
2009-09-29T21:51:44.100
LastEditorUserId
20972
OwnerUserId
20972
ParentId
0
PostTypeId
1
Score
28
ViewCount
9795
LastEditorDisplayName
text
Body
Interesting <a href="http://www.itasoftware.com/careers/puzzles07.html" rel="noreferrer">programming puzzle</a>: <blockquote> If the integers from 1 to 999,999,999 are written as words, sorted alphabetically, and concatenated, what is the 51 billionth letter? To be precise: if the integers from 1 to 999,999,999 are expressed in words (omitting spaces, ‘and’, and punctuation - see note below for format), and sorted alphabetically so that the first six integers are <ul> <li>eight</li> <li>eighteen</li> <li>eighteenmillion</li> <li>eighteenmillioneight</li> <li>eighteenmillioneighteen</li> <li>eighteenmillioneighteenthousand</li> </ul> and the last is <ul> <li>twothousandtwohundredtwo</li> </ul> then reading top to bottom, left to right, the 28th letter completes the spelling of the integer “eighteenmillion”. The 51 billionth letter also completes the spelling of an integer. Which one, and what is the sum of all the integers to that point? Note: For example, 911,610,034 is written “ninehundredelevenmillionsixhundredtenthousandthirtyfour”; 500,000,000 is written “fivehundredmillion”; 1,709 is written “onethousandsevenhundrednine”. </blockquote> I stumbled across this on a programming blog <a href="http://gnuvince.wordpress.com/" rel="noreferrer">'Occasionally Sane'</a>, and couldn't think of a neat way of doing it, the author of the <a href="http://gnuvince.wordpress.com/2007/09/19/word-numbers/" rel="noreferrer">relevant post</a> says his initial attempt ate through 1.5GB of memory in 10 minutes, and he'd only made it up to 20,000,000 ("twentymillion"). Can anyone <strike>think of</strike> <strike>come up with</strike> share with the group a novel/clever approach to this?
Tags
<algorithm>
Title
Sorting numbers from 1 to 999,999,999 in words as strings
singulars
PostAcceptedAnswerId
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
PostParentId
1. This table or related slice is empty.
PostTypePostTypeId
1. PTQuestion
UserLastEditorUserId
1. USDominic Rodger
UserOwnerUserId
1. USDominic Rodger
plurals
PostLinksPostIdRelatedPostId
1. This table or related slice is empty.
PostLinksRelatedPostIdPostId
1. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
2. PL
 singulars
 LinkTypeLinkTypeId
 LTLinked
PostsAcceptedAnswerId
1. This table or related slice is empty.
PostsParentIdCreationDate
1. PO
 singulars
 PostTypePostTypeId
 PTAnswer
2. PO
 singulars
 PostTypePostTypeId
 PTAnswer
3. PO
 singulars
 PostTypePostTypeId
 PTAnswer
VotesPostIdCreationDate
1. VO
 singulars
 PostPostId
 POSorting numbers from 1 to 999,999,999 in words as strings
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
2. VO
 singulars
 PostPostId
 POSorting numbers from 1 to 999,999,999 in words as strings
 UserUserId
 This table or related slice is empty.
 VoteTypeVoteTypeId
 VTUpMod
3. VO
 singulars
 PostPostId
 POSorting numbers from 1 to 999,999,999 in words as strings
 UserUserId
 USParris
 VoteTypeVoteTypeId
 VTFavorite
CommentsPostId

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