some warning for the newest rust version

[jianshu93]

Hello Team,

Not a big deal, but some compiling warnings after updated to rust 1.75 nightly:

warning: unnecessary parentheses around index expression
--> src/final3/functions.rs:114:42
|
114 | ...= u64::from(c[((wyrng(&mut seed) as usize) % c.len())]) << j;
| ^ ^
|
= note: #[warn(unused_parens)] on by default
help: remove these parentheses
|
114 - secret[i] |= u64::from(c[((wyrng(&mut seed) as usize) % c.len())]) << j;
114 + secret[i] |= u64::from(c[(wyrng(&mut seed) as usize) % c.len()]) << j;
|

Thanks,

Jianshu