Question

How to get the number of characters that two strings have in common in Rust

Answer 1

use std::collections::HashSet;

fn common_characters_count(str1: &str, str2: &str) -> usize {
    // Create sets for characters from each string
    let set1: HashSet<char> = str1.chars().collect();
    let set2: HashSet<char> = str2.chars().collect();

    // Find the intersection and count common characters
    set1.intersection(&set2).count()
}

fn main() {
    let str1 = "abcdefg";
    let str2 = "xayzgoe";

    println!("{}", common_characters_count(str1, str2)); 
}

 
      
/*
run:
   
3
     
*/

 

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