done till exercises/options/options1

exercises/hashmaps/README.md

@@ -1,4 +1,5 @@
 # Hashmaps
+
 A *hash map* allows you to associate a value with a particular key.
 You may also know this by the names [*unordered map* in C++](https://en.cppreference.com/w/cpp/container/unordered_map), 
 [*dictionary* in Python](https://docs.python.org/3/tutorial/datastructures.html#dictionaries) or an *associative array* in other languages.

exercises/hashmaps/hashmaps1.rs

@@ -10,17 +10,18 @@
 //
 // 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::new(); // TODO: declare your hash map here.
 
     // Two bananas are already given for you :)
     basket.insert(String::from("banana"), 2);
 
     // TODO: Put more fruits in your basket here.
+    basket.insert(String::from("apple"), 3);
+    basket.insert(String::from("apple1"), 3);
 
     basket
 }

exercises/hashmaps/hashmaps2.rs

@@ -11,7 +11,6 @@
 //
 // Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a hint.
 
-// I AM NOT DONE
 
 use std::collections::HashMap;
 
@@ -37,6 +36,7 @@ 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!
+        basket.entry(fruit).or_insert(1);
     }
 }
 

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.
@@ -40,6 +38,42 @@ fn build_scores_table(results: String) -> HashMap<String, Team> {
         // will be the 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 team1 = scores.get_mut(&team_1_name);
+        match team1 {
+            Some(t) => {
+                t.goals_scored += team_1_score;
+                t.goals_conceded += team_2_score;
+            }
+            None => {
+                scores.insert(
+                    team_1_name.clone(),
+                    Team {
+                        name: team_1_name.clone(),
+                        goals_scored: team_1_score,
+                        goals_conceded: team_2_score,
+                    },
+                );
+            }
+        }
+
+        let team2 = scores.get_mut(&team_2_name);
+        match team2 {
+            Some(t) => {
+                t.goals_scored += team_2_score;
+                t.goals_conceded += team_1_score;
+            }
+            None => {
+                scores.insert(
+                    team_2_name.clone(),
+                    Team {
+                        name: team_2_name.clone(),
+                        goals_scored: team_2_score,
+                        goals_conceded: team_1_score,
+                    },
+                );
+            }
+        }
     }
     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 +3,11 @@
 // '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 +5,10 @@
 // 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.
 // No hints this time!
 
-// I AM NOT DONE
-
 pub enum Command {
     Uppercase,
     Trim,
@@ -30,11 +28,22 @@ 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![];
         for (string, command) in input.iter() {
             // TODO: Complete the function body. You can do it!
+            match command {
+                Command::Append(u) => {
+                    output.push(format!("{}{}", string, "bar".repeat(*u)));
+                }
+                Command::Trim => {
+                    output.push(string.trim().to_string());
+                }
+                Command::Uppercase => {
+                    output.push(string.to_uppercase().to_string());
+                }
+            }
         }
         output
     }
@@ -43,7 +52,7 @@ 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]

exercises/strings/strings4.rs

@@ -9,6 +9,7 @@
 fn string_slice(arg: &str) {
     println!("{}", arg);
 }
+
 fn string(arg: String) {
     println!("{}", arg);
 }