6 lines
250 B
Ruby
6 lines
250 B
Ruby
def common_directory_path(dirs, separator='/')
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dir1, dir2 = dirs.minmax.map{|dir| dir.split(separator)}
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dir1.zip(dir2).take_while{|dn1,dn2| dn1==dn2}.map(&:first).join(separator)
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end
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p common_directory_path(dirs) #=> "/home/user1/tmp"
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