         return res
     }
     
-    fileprivate func buildLine(words: [String], _ start: Int, _ end: Int, _ spaceNum: Int, _ extraNum: Int) -> String {
+    fileprivate func buildLine(_ words: [String], _ start: Int, _ end: Int, _ spaceNum: Int, _ extraNum: Int) -> String {
         var res = ""
         var extraNum = extraNum
         

            }
        }
        
        for _ in res.characters.count..<lineLength {
            res += " "
        }
        

 */

class TextJustification {
    func fullJustify(_ words: [String], _ maxWidth: Int) -> [String] {
        var res = [String]()
        var count = 0, last = 0
        
