object AnagramGrouper {
// Groups an array of strings into subarrays of anagrams
def groupAnagrams(words: Seq[String]): Seq[Seq[String]] = {
// Validate input
if (words.exists(_.isEmpty)) throw new IllegalArgumentException("All elements must be non-empty strings.")
// Group words by their sorted character key
val grouped = words.groupBy(word => word.sorted)
// Return grouped anagrams as a sequence of sequences
grouped.values.toSeq
}
def main(args: Array[String]): Unit = {
val arr = Seq("eat", "tea", "rop", "ate", "nat", "orp", "tan", "bat", "pro")
try {
val result = groupAnagrams(arr)
println("Grouped anagrams:")
result.foreach(group => println(group.mkString("[", ", ", "]")))
} catch {
case e: Exception => println(s"Error: ${e.getMessage}")
}
}
}
/*
run:
Grouped anagrams:
[bat]
[nat, tan]
[eat, tea, ate]
[rop, orp, pro]
*/
