leetcode: solve problem 929

leetcode/0929-unique-email-addresses/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "unique-email-addresses"
+version = "0.1.0"

leetcode/0929-unique-email-addresses/Cargo.toml

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+[package]
+name = "unique-email-addresses"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

leetcode/0929-unique-email-addresses/src/main.rs

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+use std::collections::HashSet;
+
+pub fn num_unique_emails(emails: Vec<String>) -> i32 {
+    let mut unique_emails = HashSet::new();
+    
+    for email in emails.iter() {
+        let mut parts: Vec<String> = email
+            .split("@")
+            .map(|s| s.to_string())
+            .collect();
+        parts[0] = parts[0]
+            .replace(".", "")
+            .split("+")
+            .collect::<Vec<&str>>()[0]
+            .to_string();
+        unique_emails.insert(format!("{}@{}", parts[0], parts[1]));
+    }
+
+    unique_emails.len() as i32
+}
+
+fn main() {
+    let inp: Vec<String> = vec![
+        "test.email+alex@leetcode.com",
+        "test.e.mail+bob.cathy@leetcode.com",
+        "testemail+david@lee.tcode.com",
+    ].iter().map(|s| s.to_string()).collect();
+    println!("{}", num_unique_emails(inp));
+}