19 lines
274 B
JavaScript

function *outer(n) {
yield n;
yield* middle(n - 1, inner(n + 10));
yield n + 1;
}
function *middle(n, plusTen) {
yield n;
yield* inner(n - 1);
yield n + 1;
yield* plusTen;
}
function *inner(n) {
yield n;
}
genHelpers.check(outer(5), [5, 4, 3, 5, 15, 6]);