Find common directory path: Difference between revisions
Added Kotlin
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Line 1,058:
for their common directory path yields:
/home/user1/tmp
</pre>
=={{header|Kotlin}}==
<lang scala>// version 1.1.51
fun findCommonDirPath(paths: List<String>, separator: Char): String {
if (paths.isEmpty()) return ""
if (paths.size == 1) return paths[0]
val splits = paths[0].split(separator)
val n = splits.size
val paths2 = paths.drop(1)
var k = 0
var common = ""
while (true) {
val prevCommon = common
common += if (k == 0) splits[0] else separator + splits[k]
if (!paths2.all { it.startsWith(common + separator) || it == common } ) return prevCommon
if (++k == n) return common
}
}
fun main(args: Array<String>) {
val paths = listOf(
"/home/user1/tmp/coverage/test",
"/home/user1/tmp/covert/operator",
"/home/user1/tmp/coven/members"
)
val pathsToPrint = paths.map { " '$it'" }.joinToString("\n")
println("The common directory path of:\n\n$pathsToPrint\n")
println("is '${findCommonDirPath(paths, '/')}'")
}</lang>
{{out}}
<pre>
The common directory path of:
'/home/user1/tmp/coverage/test'
'/home/user1/tmp/covert/operator'
'/home/user1/tmp/coven/members'
is '/home/user1/tmp'
</pre>
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