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Code Sample

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Write a JavaScript function unhash(num) to find a ten letter string of characters that contains only letters from:

acdfgilmnoprstuw

such that the hash(the_string) is:

--> 292681030017238 <--

if hash is defined by the following pseudo-code:

Int64 hash(String s)
{
Int64 hash = 7
String letters = "acdfgilmnoprstuw"
for(Int32 i = 0; i < s.length; i++)
{
hash = (hash * 23 + letters.indexOf(s[i]))
}
return hash
}

For example, if we were trying to find the eight letter string where hash(the_string) was 593846452632, the answer would be "tortilla". The following should also not fail.

console.assert("tortilla" == unhash(hash("tortilla")));

Author

All contents authored by James Hester Jr. Any questionsa or comments, please direct to himself@jameshesterjr.com