RosettaCodeData/Task/Find-common-directory-path/J/find-common-directory-path-1.j
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2013-04-10 21:29:02 -07:00

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parseDirs =: = <;.2 ]
getCommonPrefix =: {. ;@{.~ 0 i.~ *./@(="1 {.)
getCommonDirPath=: [: getCommonPrefix parseDirs&>