hashmaps, modules, and quiz #2

exercises/hashmaps/hashmaps1.rs

@@ -10,15 +10,15 @@
 //
 // Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 use std::collections::HashMap;
 
 fn fruit_basket() -> HashMap<String, u32> {
-    let mut basket = // TODO: declare your hash map here.
+    let mut basket: HashMap<String, u32> = HashMap::new();
 
     // Two bananas are already given for you :)
     basket.insert(String::from("banana"), 2);
+    basket.insert(String::from("apple"), 3);
+    basket.insert(String::from("mango"), 4);
 
     // TODO: Put more fruits in your basket here.
 

exercises/hashmaps/hashmaps2.rs

@@ -11,8 +11,6 @@
 //
 // Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 use std::collections::HashMap;
 
 #[derive(Hash, PartialEq, Eq)]
@@ -37,6 +35,9 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
         // TODO: Put new fruits if not already present. Note that you
         // are not allowed to put any type of fruit that's already
         // present!
+        if !basket.contains_key(&fruit) {
+            basket.insert(fruit, 5);
+        }
     }
 }
 

exercises/hashmaps/hashmaps3.rs

@@ -14,8 +14,6 @@
 
 // Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 use std::collections::HashMap;
 
 // A structure to store team name and its goal details.
@@ -35,11 +33,36 @@ fn build_scores_table(results: String) -> HashMap<String, Team> {
         let team_1_score: u8 = v[2].parse().unwrap();
         let team_2_name = v[1].to_string();
         let team_2_score: u8 = v[3].parse().unwrap();
-        // TODO: Populate the scores table with details extracted from the
-        // current line. Keep in mind that goals scored by team_1
-        // will be number of goals conceded from team_2, and similarly
-        // goals scored by team_2 will be the number of goals conceded by
-        // team_1.
+
+        let team_1_updated_status = match scores.get(&team_1_name) {
+            Some(team) => Team {
+                name: team_1_name,
+                goals_scored: team.goals_scored + team_1_score,
+                goals_conceded: team.goals_conceded + team_2_score,
+            },
+            None => Team {
+                name: team_1_name,
+                goals_scored: team_1_score,
+                goals_conceded: team_2_score,
+            },
+        };
+
+        scores.insert(team_1_updated_status.name.clone(), team_1_updated_status);
+
+        let team_2_updated_status = match scores.get(&team_2_name) {
+            Some(team) => Team {
+                name: team_2_name,
+                goals_scored: team.goals_scored + team_2_score,
+                goals_conceded: team.goals_conceded + team_1_score,
+            },
+            None => Team {
+                name: team_2_name,
+                goals_scored: team_2_score,
+                goals_conceded: team_1_score,
+            },
+        };
+
+        scores.insert(team_2_updated_status.name.clone(), team_2_updated_status);
     }
     scores
 }

exercises/modules/modules1.rs

@@ -1,15 +1,13 @@
 // modules1.rs
 // Execute `rustlings hint modules1` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 mod sausage_factory {
     // Don't let anybody outside of this module see this!
     fn get_secret_recipe() -> String {
         String::from("Ginger")
     }
 
-    fn make_sausage() {
+    pub fn make_sausage() {
         get_secret_recipe();
         println!("sausage!");
     }

exercises/modules/modules2.rs

@@ -3,12 +3,9 @@
 // 'use' and 'as' keywords. Fix these 'use' statements to make the code compile.
 // Execute `rustlings hint modules2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 mod delicious_snacks {
-    // TODO: Fix these use statements
-    use self::fruits::PEAR as ???
-    use self::veggies::CUCUMBER as ???
+    pub use self::fruits::PEAR as fruit;
+    pub use self::veggies::CUCUMBER as veggie;
 
     mod fruits {
         pub const PEAR: &'static str = "Pear";

exercises/modules/modules3.rs

@@ -5,10 +5,7 @@
 // from the std::time module. Bonus style points if you can do it with one line!
 // Execute `rustlings hint modules3` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
-// TODO: Complete this use statement
-use ???
+use std::time::{SystemTime, UNIX_EPOCH};
 
 fn main() {
     match SystemTime::now().duration_since(UNIX_EPOCH) {

exercises/quiz2.rs

@@ -18,8 +18,6 @@
 // - The output element is going to be a Vector of strings.
 // Execute `rustlings hint quiz2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
-
 pub enum Command {
     Uppercase,
     Trim,
@@ -29,12 +27,15 @@ pub enum Command {
 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(size) => output.push(string.to_owned() + &"bar".repeat(*size)),
+            }
         }
         output
     }
@@ -42,8 +43,7 @@ mod my_module {
 
 #[cfg(test)]
 mod tests {
-    // TODO: What do we have to import to have `transformer` in scope?
-    use ???;
+    use super::my_module::transformer;
     use super::Command;
 
     #[test]