rust in a string, replace multiple spaces with single space
To replace multiple spaces with a single space in a Rust string, you can use regular expressions. Here's an example code snippet that demonstrates how to achieve this:
use regex::Regex;
fn main() {
let input = "Hello World Rust";
let re = Regex::new(r"\s+").unwrap();
let result = re.replace_all(input, " ");
println!("{}", result);
}
In this code, we first import the Regex
module from the regex
crate. We then define the input string input
which contains multiple spaces. Next, we create a regular expression re
using the Regex::new
function. The regular expression \s+
matches one or more whitespace characters. Finally, we use the replace_all
method to replace all matches of the regular expression with a single space.
When you run this code, it will output:
Hello World Rust
This demonstrates that the multiple spaces in the input string have been replaced with a single space.