You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
87 lines
2.6 KiB
87 lines
2.6 KiB
// hashmaps3.rs
|
|
//
|
|
// 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, goals the
|
|
// team scored, and goals the team conceded. One approach to build the scores
|
|
// table is to use a Hashmap. The solution is partially written to use a
|
|
// Hashmap, complete it to pass the test.
|
|
//
|
|
// Make me pass the tests!
|
|
//
|
|
// 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 the goal details of a team.
|
|
struct Team {
|
|
goals_scored: u8,
|
|
goals_conceded: u8,
|
|
}
|
|
|
|
fn build_scores_table(results: String) -> HashMap<String, Team> {
|
|
// The name of the team is the key and its associated struct is the value.
|
|
let mut scores: HashMap<String, Team> = HashMap::new();
|
|
|
|
for r in results.lines() {
|
|
let v: Vec<&str> = r.split(',').collect();
|
|
let team_1_name = v[0].to_string();
|
|
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 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.
|
|
}
|
|
scores
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests {
|
|
use super::*;
|
|
|
|
fn get_results() -> String {
|
|
let results = "".to_string()
|
|
+ "England,France,4,2\n"
|
|
+ "France,Italy,3,1\n"
|
|
+ "Poland,Spain,2,0\n"
|
|
+ "Germany,England,2,1\n";
|
|
results
|
|
}
|
|
|
|
#[test]
|
|
fn build_scores() {
|
|
let scores = build_scores_table(get_results());
|
|
|
|
let mut keys: Vec<&String> = scores.keys().collect();
|
|
keys.sort();
|
|
assert_eq!(
|
|
keys,
|
|
vec!["England", "France", "Germany", "Italy", "Poland", "Spain"]
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn validate_team_score_1() {
|
|
let scores = build_scores_table(get_results());
|
|
let team = scores.get("England").unwrap();
|
|
assert_eq!(team.goals_scored, 5);
|
|
assert_eq!(team.goals_conceded, 4);
|
|
}
|
|
|
|
#[test]
|
|
fn validate_team_score_2() {
|
|
let scores = build_scores_table(get_results());
|
|
let team = scores.get("Spain").unwrap();
|
|
assert_eq!(team.goals_scored, 0);
|
|
assert_eq!(team.goals_conceded, 2);
|
|
}
|
|
}
|