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authorHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
committerHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
commit4dfc11d74ab02ac5765ae5d08fb750c91f4744b4 (patch)
tree17ba62056d6b691dd0217b0e8f1b3a5826dce0f6 /rustlings/solutions/11_hashmaps
parent02d8f1c62896576e1266553a56980eddbc2a88d7 (diff)
rustlings: move to rust/
Diffstat (limited to 'rustlings/solutions/11_hashmaps')
-rw-r--r--rustlings/solutions/11_hashmaps/hashmaps1.rs42
-rw-r--r--rustlings/solutions/11_hashmaps/hashmaps2.rs96
-rw-r--r--rustlings/solutions/11_hashmaps/hashmaps3.rs85
3 files changed, 0 insertions, 223 deletions
diff --git a/rustlings/solutions/11_hashmaps/hashmaps1.rs b/rustlings/solutions/11_hashmaps/hashmaps1.rs
deleted file mode 100644
index 3a787c4..0000000
--- a/rustlings/solutions/11_hashmaps/hashmaps1.rs
+++ /dev/null
@@ -1,42 +0,0 @@
-// A basket of fruits in the form of a hash map needs to be defined. The key
-// represents the name of the fruit and the value represents how many of that
-// particular fruit is in the basket. You have to put at least 3 different
-// types of fruits (e.g apple, banana, mango) in the basket and the total count
-// of all the fruits should be at least 5.
-
-use std::collections::HashMap;
-
-fn fruit_basket() -> HashMap<String, u32> {
- // Declare the hash map.
- let mut basket = HashMap::new();
-
- // Two bananas are already given for you :)
- basket.insert(String::from("banana"), 2);
-
- // Put more fruits in your basket.
- basket.insert(String::from("apple"), 3);
- basket.insert(String::from("mango"), 1);
-
- basket
-}
-
-fn main() {
- // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- #[test]
- fn at_least_three_types_of_fruits() {
- let basket = fruit_basket();
- assert!(basket.len() >= 3);
- }
-
- #[test]
- fn at_least_five_fruits() {
- let basket = fruit_basket();
- assert!(basket.values().sum::<u32>() >= 5);
- }
-}
diff --git a/rustlings/solutions/11_hashmaps/hashmaps2.rs b/rustlings/solutions/11_hashmaps/hashmaps2.rs
deleted file mode 100644
index 75e6ec2..0000000
--- a/rustlings/solutions/11_hashmaps/hashmaps2.rs
+++ /dev/null
@@ -1,96 +0,0 @@
-// We're collecting different fruits to bake a delicious fruit cake. For this,
-// we have a basket, which we'll represent in the form of a hash map. The key
-// represents the name of each fruit we collect and the value represents how
-// many of that particular fruit we have collected. Three types of fruits -
-// Apple (4), Mango (2) and Lychee (5) are already in the basket hash map. You
-// must add fruit to the basket so that there is at least one of each kind and
-// more than 11 in total - we have a lot of mouths to feed. You are not allowed
-// to insert any more of the fruits that are already in the basket (Apple,
-// Mango, and Lychee).
-
-use std::collections::HashMap;
-
-#[derive(Hash, PartialEq, Eq, Debug)]
-enum Fruit {
- Apple,
- Banana,
- Mango,
- Lychee,
- Pineapple,
-}
-
-fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
- let fruit_kinds = [
- Fruit::Apple,
- Fruit::Banana,
- Fruit::Mango,
- Fruit::Lychee,
- Fruit::Pineapple,
- ];
-
- for fruit in fruit_kinds {
- // If fruit doesn't exist, insert it with some value.
- basket.entry(fruit).or_insert(5);
- }
-}
-
-fn main() {
- // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- // Don't modify this function!
- fn get_fruit_basket() -> HashMap<Fruit, u32> {
- let content = [(Fruit::Apple, 4), (Fruit::Mango, 2), (Fruit::Lychee, 5)];
- HashMap::from_iter(content)
- }
-
- #[test]
- fn test_given_fruits_are_not_modified() {
- let mut basket = get_fruit_basket();
- fruit_basket(&mut basket);
- assert_eq!(*basket.get(&Fruit::Apple).unwrap(), 4);
- assert_eq!(*basket.get(&Fruit::Mango).unwrap(), 2);
- assert_eq!(*basket.get(&Fruit::Lychee).unwrap(), 5);
- }
-
- #[test]
- fn at_least_five_types_of_fruits() {
- let mut basket = get_fruit_basket();
- fruit_basket(&mut basket);
- let count_fruit_kinds = basket.len();
- assert!(count_fruit_kinds >= 5);
- }
-
- #[test]
- fn greater_than_eleven_fruits() {
- let mut basket = get_fruit_basket();
- fruit_basket(&mut basket);
- let count = basket.values().sum::<u32>();
- assert!(count > 11);
- }
-
- #[test]
- fn all_fruit_types_in_basket() {
- let fruit_kinds = [
- Fruit::Apple,
- Fruit::Banana,
- Fruit::Mango,
- Fruit::Lychee,
- Fruit::Pineapple,
- ];
-
- let mut basket = get_fruit_basket();
- fruit_basket(&mut basket);
-
- for fruit_kind in fruit_kinds {
- let Some(amount) = basket.get(&fruit_kind) else {
- panic!("Fruit kind {fruit_kind:?} was not found in basket");
- };
- assert!(*amount > 0);
- }
- }
-}
diff --git a/rustlings/solutions/11_hashmaps/hashmaps3.rs b/rustlings/solutions/11_hashmaps/hashmaps3.rs
deleted file mode 100644
index 485bf83..0000000
--- a/rustlings/solutions/11_hashmaps/hashmaps3.rs
+++ /dev/null
@@ -1,85 +0,0 @@
-// A list of scores (one per line) of a soccer match is given. Each line is of
-// the form "<team_1_name>,<team_2_name>,<team_1_goals>,<team_2_goals>"
-// Example: "England,France,4,2" (England scored 4 goals, France 2).
-//
-// You have to build a scores table containing the name of the team, the total
-// number of goals the team scored, and the total number of goals the team
-// conceded.
-
-use std::collections::HashMap;
-
-// A structure to store the goal details of a team.
-#[derive(Default)]
-struct TeamScores {
- goals_scored: u8,
- goals_conceded: u8,
-}
-
-fn build_scores_table(results: &str) -> HashMap<&str, TeamScores> {
- // The name of the team is the key and its associated struct is the value.
- let mut scores = HashMap::<&str, TeamScores>::new();
-
- for line in results.lines() {
- let mut split_iterator = line.split(',');
- // NOTE: We use `unwrap` because we didn't deal with error handling yet.
- let team_1_name = split_iterator.next().unwrap();
- let team_2_name = split_iterator.next().unwrap();
- let team_1_score: u8 = split_iterator.next().unwrap().parse().unwrap();
- let team_2_score: u8 = split_iterator.next().unwrap().parse().unwrap();
-
- // Insert the default with zeros if a team doesn't exist yet.
- let team_1 = scores.entry(team_1_name).or_default();
- // Update the values.
- team_1.goals_scored += team_1_score;
- team_1.goals_conceded += team_2_score;
-
- // Similarly for the second team.
- let team_2 = scores.entry(team_2_name).or_default();
- team_2.goals_scored += team_2_score;
- team_2.goals_conceded += team_1_score;
- }
-
- scores
-}
-
-fn main() {
- // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- const RESULTS: &str = "England,France,4,2
-France,Italy,3,1
-Poland,Spain,2,0
-Germany,England,2,1
-England,Spain,1,0";
-
- #[test]
- fn build_scores() {
- let scores = build_scores_table(RESULTS);
-
- assert!(
- ["England", "France", "Germany", "Italy", "Poland", "Spain"]
- .into_iter()
- .all(|team_name| scores.contains_key(team_name))
- );
- }
-
- #[test]
- fn validate_team_score_1() {
- let scores = build_scores_table(RESULTS);
- let team = scores.get("England").unwrap();
- assert_eq!(team.goals_scored, 6);
- assert_eq!(team.goals_conceded, 4);
- }
-
- #[test]
- fn validate_team_score_2() {
- let scores = build_scores_table(RESULTS);
- let team = scores.get("Spain").unwrap();
- assert_eq!(team.goals_scored, 0);
- assert_eq!(team.goals_conceded, 3);
- }
-}