How to Make a Reverse Ordered For Loop in Rust

Using rev Function

The .rev() function reverses an iterator’s direction. Usually, iterators iterate from left to right. After using rev(), an iterator will instead iterate from right to left. For example,

fn main() {
  for x in (0..5).rev() {
    println!("{}", x);
  }
}

4
3
2
1
0

This also works for most Iterators:

fn main() {
  let v = vec!["a", "b", "c"];
  for x in v.iter().rev() {
    println!("{}", x);
  }
}

c
b
a