Question

How to reverse a word in a string with Rust

Answer 1

fn reverse_word_in_string(s: &str, word: &str) -> String {
    if let Some(pos) = s.find(word) {
        let reversed: String = word.chars().rev().collect();
        let before = &s[..pos];
        let after = &s[pos + word.len()..];
        format!("{}{}{}", before, reversed, after)
    } else {
        s.to_string()
    }
}

fn main() {
    let text = "C++ C Java Python PHP C# Rust";
    let target = "Java";

    let result = reverse_word_in_string(text, target);
    println!("{}", result);
}




/*
run:

C++ C avaJ Python PHP C# Rust

*/

 

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