finish all hashmap problem.

exercises/hashmaps/hashmaps1.rs

@@ -11,15 +11,16 @@
 // 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();  // TODO: declare your hash map here.
 
     // Two bananas are already given for you :)
     basket.insert(String::from("banana"), 2);
+    basket.insert(String::from("apple"), 114);
+    basket.insert(String::from("dick"), 514);
 
     // TODO: Put more fruits in your basket here.
 

exercises/hashmaps/hashmaps2.rs

@@ -14,7 +14,6 @@
 // Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
 
 use std::collections::HashMap;
 
@@ -40,7 +39,12 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
         // TODO: Insert new fruits if they are not already present in the
         // basket. Note that you are not allowed to put any type of fruit that's
         // already present!
+        if !basket.contains_key(&fruit) {
+            basket.insert(fruit, 1);
+        }
+
     }
+
 }
 
 #[cfg(test)]

exercises/hashmaps/hashmaps3.rs

@@ -14,7 +14,6 @@
 // Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a
 // hint.
 
-// I AM NOT DONE
 
 use std::collections::HashMap;
 
@@ -39,6 +38,28 @@ 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 let Some(value) = scores.get_mut(&team_1_name){
+            (*value).goals_scored += team_1_score;
+            (*value).goals_conceded += team_2_score;
+        } else {
+            scores.insert(team_1_name, Team{
+                goals_scored: team_1_score,
+                goals_conceded: team_2_score,
+            });
+        }
+
+
+        if let Some(value) = scores.get_mut(&team_2_name){
+            (*value).goals_scored += team_2_score;
+            (*value).goals_conceded += team_1_score;
+
+        } else {
+            scores.insert(team_2_name, Team{
+                goals_scored: team_2_score ,
+                goals_conceded: team_1_score,
+            });
+        }
+
     }
     scores
 }