 
 @infix func * (left: Int, right: String) -> String {
     var concatenation = ""
-    for _ in 0..left {
+    for _ in 0..<left {
         concatenation += right
     }
     return concatenation

            }
        }
        else {
            for _ in 0..count {
                randomElements.append(self[Int.random(selfRange)])
            }
        }

        var randomElements = T[]()
        var selfRange = 0...(self.count - 1)
        
        for _ in 0..<count {
            randomElements.append(self[Int.random(selfRange)])
        }
        
