Map letters from array if the condition is met REACT

I have a state like this one:

const [word, setWord] = useState([
    {
      letters: ["r", "e", "a", "c", "t"],
      shows: [0, 0, 0, 0, 1],
    },
  ]);

and I want to render a letter if shows[i] == 1, else I want to render "_".

How can I do this using map in react (or maybe some other way)? I mean something like this:

map((letter, show) => (
    show == 1 ? letter : '_'
))