| Вход | Ожидаемый результат |
|---|---|
| [["a", "b", "c"]] | "a-b-c" |
| [[]] | "" |
| [["single"]] | "single" |
| [["one", "two"]] | "one-two" |
| [["x", "y", "z", "w"]] | "x-y-z-w" |
| [["hello", "world"]] | "hello-world" |
| [["1", "2", "3"]] | "1-2-3" |
| [["a"]] | "a" |
| [["привет", "мир"]] | "привет-мир" |
| [["a", "b"]] | "a-b" |