function committed to codewars

src/main.rs

@@ -11,23 +11,16 @@ fn main() {
 }
 
 fn order(sentence: &str) -> String {
-
-    let mut words = vec![];
-
-    for word in sentence.split_whitespace() {
-        let n = word.matches(char::is_numeric).collect::<Vec<&str>>()[0];
-        println!("{:?}\t{:?}", n, word);
-    }
-    println!();
-
-    words = sentence.split_ascii_whitespace()
-        .map(|s| format!("{}{}", s.matches(char::is_numeric).collect::<Vec<&str>>()[0],s))
+    // Iterate over non-whitespace 'words'
+    let mut words: Vec<String> = sentence.split_whitespace()
+        // Insert copy of first (only) digit at the beginning
+        .map(|s| format!("{}{}",
+            s.matches(char::is_numeric).collect::<Vec<&str>>()[0], s))
         .collect();
-
+    
     words.sort();
-
+    // Remove first character and join with spaces
     words.iter().map(|w| &w[1..])
         .collect::<Vec<&str>>()
-        .join(" ")
-
-}
+        .join(" ").to_string()
+}