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subdomain-visit-count.rs
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subdomain-visit-count.rs
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struct Solution;
impl Solution {
pub fn subdomain_visits(cpdomains: Vec<String>) -> Vec<String> {
use std::collections::HashMap;
let mut map: HashMap<String, u32> = HashMap::new();
for i in cpdomains.into_iter() {
let v = i.split(' ').collect::<Vec<&str>>();
let count = unsafe { v[0].parse::<u32>().unwrap_unchecked() };
let domains = v[1].split('.').collect::<Vec<&str>>();
for j in 0..domains.len() {
let domain = domains[j..].join(".");
match map.get_mut(&domain) {
Some(v) => *v += count,
None => {
let _ = map.insert(domain, count);
}
}
}
}
let mut ans = Vec::with_capacity(map.len());
for (k, v) in map.into_iter() {
ans.push(format!("{v} {k}"));
}
ans
}
}
fn main() {
println!(
"{:?}",
Solution::subdomain_visits(vec!["9001 discuss.leetcode.com".into()])
);
println!(
"{:?}",
Solution::subdomain_visits(vec![
"900 google.mail.com".into(),
"50 yahoo.com".into(),
"1 intel.mail.com".into(),
"5 wiki.org".into()
])
);
}
#[cfg(test)]
mod tests {
use crate::Solution;
#[test]
fn test() {
let result = Solution::subdomain_visits(vec!["9001 discuss.leetcode.com".into()]);
for i in ["9001 com", "9001 discuss.leetcode.com", "9001 leetcode.com"] {
assert!(result.contains(&i.to_owned()));
}
}
}