Compilare: warning: unused variable: `aux` --> main.rs:20:9 | 20 | let mut aux: Vec<usize> = Vec::new(); | ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_aux` | = note: `#[warn(unused_variables)]` on by default warning: variable does not need to be mutable --> main.rs:20:9 | 20 | let mut aux: Vec<usize> = Vec::new(); | ----^^^ | | | help: remove this `mut` | = note: `#[warn(unused_mut)]` on by default warning: variable does not need to be mutable --> main.rs:22:9 | 22 | let mut left_1: Vec<usize> = vec![0; n + 1]; | ----^^^^^^ | | | help: remove this `mut` warning: variable does not need to be mutable --> main.rs:23:9 | 23 | let mut left_2: Vec<usize> = vec![0; n + 1]; | ----^^^^^^ | | | help: remove this `mut` warning: variable does not need to be mutable --> main.rs:24:9 | 24 | let mut right_1: Vec<usize> = vec![n + 1; n + 1]; | ----^^^^^^^ | | | help: remove this `mut` warning: variable does not need to be mutable --> main.rs:25:9 | 25 | let mut right_2: Vec<usize> = vec![n + 1; n + 1]; | ----^^^^^^^ | | | help: remove this `mut`