rustHow to loop for backward in Rust

Looping backward in Rust is done using the rev() method on an iterator. This method reverses the order of the iterator, allowing you to loop through it in reverse.

Example code

let mut v = vec![1, 2, 3];

for i in v.iter().rev() {
    println!("{}", i);
}

Output example

3
2
1

Code explanation

• let mut v = vec![1, 2, 3];: creates a mutable vector with the values 1, 2, and 3.
• for i in v.iter().rev(): creates a loop that iterates over the vector in reverse order.
• println!("{}", i);: prints the current value of the loop.

Helpful links

• Rust Iterator Documentation

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