finished hashmaps

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("pineapple"), 3);
 
     basket
 }

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 +35,10 @@ 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, 2);
+        }
     }
 }
 

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 +38,36 @@ 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.
+
+        if (scores.contains_key(&team_1_name)) {
+            let team = scores.get_mut(&team_1_name).unwrap();
+            team.goals_scored += team_1_score;
+            team.goals_conceded += team_2_score;
+        } else {
+            scores.insert(
+                team_1_name.clone(),
+                Team {
+                    name: team_1_name.clone(),
+                    goals_scored: team_1_score,
+                    goals_conceded: team_2_score,
+                },
+            );
+        }
+
+        if (scores.contains_key(&team_2_name)) {
+            let team = scores.get_mut(&team_2_name).unwrap();
+            team.goals_scored += team_2_score;
+            team.goals_conceded += team_1_score;
+        } else {
+            scores.insert(
+                team_2_name.clone(),
+                Team {
+                    name: team_2_name.clone(),
+                    goals_scored: team_2_score,
+                    goals_conceded: team_1_score,
+                },
+            );
+        }
     }
     scores
 }