Build the next version of the Unix sort command, this time with the -r flag baked in. Given a list of lines, return them sorted in descending order by character code (the exact reverse of v1's order, like LC_ALL=C sort -r: lowercase letters come before uppercase ones), joined by newline characters (\n). Duplicates are all kept. If the list is empty, return the empty string.
Function signature:
def sortLines(lines: List[String]): String
Example:
Input: lines = ["banana", "apple", "cherry"] Output: "cherry\nbanana\napple" When printed: cherry banana apple
Use
sortWith(_ > _) for descending order, then combine the lines with mkString("\n").
The full solution:
class Solution {
def sortLines(lines: List[String]): String = {
val sortedLines = lines.sortWith(_ > _)
sortedLines.mkString("\n")
}
}
Free plan: 30 tutor messages. Premium is unlimited.
Saved
Ctrl + Enter to check
