[CBLT]

len(arr) == 255 should be okay, 0..255 doesn't include the end index[0]. In the Rust playground[1] I see it only print up to 254.

[0] https://doc.rust-lang.org/stable/rust-by-example/flow_contro... [1] https://play.rust-lang.org/?version=stable&mode=debug&editio...