solve quiz2

Author: wishlee1124

exercises/quiz2.rs

@@ -19,7 +19,6 @@
 // - The output element is going to be a Vector of strings.
 //
 // No hints this time!
-
 // I AM NOT DONE
 
 pub enum Command {
@@ -32,11 +31,24 @@ mod my_module {
     use super::Command;
 
     // TODO: Complete the function signature!
-    pub fn transformer(input: ???) -> ??? {
+    pub fn transformer(input: Vec<(String, Command)>) -> Vec<String> {
         // TODO: Complete the output declaration!
-        let mut output: ??? = vec![];
+        let mut output: Vec<String> = vec![];
         for (string, command) in input.iter() {
             // TODO: Complete the function body. You can do it!
+            match command {
+                Command::Uppercase => output.push(string.to_uppercase()),
+                Command::Trim => output.push(string.trim().to_string()),
+                Command::Append(num) => {
+                    let mut append = String::new();
+                    let mut n: usize = 0;
+                    while n < *num {
+                        append.push_str("bar");
+                        n += 1;
+                    }
+                    output.push(string .to_owned()+ &append);
+                },
+            }
         }
         output
     }
@@ -45,7 +57,7 @@ mod my_module {
 #[cfg(test)]
 mod tests {
     // TODO: What do we need to import to have `transformer` in scope?
-    use ???;
+    use super::my_module::transformer;
     use super::Command;
 
     #[test]