How to Reverse a String in Rust

Created May 10, 2022 at 15:02

Modified May 24, 2022 at 9:44

Using rev Function

The str::rev() function reverses an iterator’s direction.

See the following example:

fn main() {
  let mut s = "Hello";
  println!("{}", s.chars().rev().collect::<String>());

  s = "a̐éö";
  println!("{}", s.chars().rev().collect::<String>());
}

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Using unicode-segmentation Crate

Installation

This crate is fully compatible with Cargo. Just add it to your Cargo.toml:

[dependencies]
unicode-segmentation = "1"

unicode-segmentation Usage

use unicode_segmentation::UnicodeSegmentation;

fn main() {
  let mut s = "Hello";
  println!("{}", s.graphemes(true).rev().collect::<String>());

  s = "a̐éö";
  println!("{}", s.graphemes(true).rev().collect::<String>());
}