leetcode929

package main

import (
    "fmt"
    "strings"
)

func numUniqueEmails(emails []string) int {
    var dic map[string]int
    dic = make(map[string]int)
    for _, s := range emails {
        strArr := strings.Split(s, "@")
        localname := strArr[0]
        domainname := strArr[1]
        plusIndex := strings.Index(localname, "+")
        if plusIndex > 0 {
            localname = localname[0:plusIndex]
        }
        localname = strings.Replace(localname, ".", "", -1)
        realmail := localname + "@" + domainname
        _, ok := dic[realmail]
        if ok {
            //found realmail
        } else {
            dic[realmail] = 1
        }
    }
    return len(dic)
}

func main() {
    emails := []string{"test.email+alex@leetcode.com", "test.e.mail+bob.cathy@leetcode.com", "testemail+david@lee.tcode.com"}
    num := numUniqueEmails(emails)
    fmt.Println(num)
}

public class Solution
    {
        public int NumUniqueEmails(string[] emails)
        {
            var dic = new Dictionary<string, int>();
            foreach (var email in emails)
            {
                var mails = email.Split('@');
                var localname = mails[0];
                var domainname = mails[1];

                var plusIndex = localname.IndexOf('+');
                if (plusIndex >= 0)
                {
                    localname = localname.Substring(0, plusIndex);
                }
                localname = localname.Replace(".", "");
                var realmail = localname + "@" + domainname;

                if (!dic.ContainsKey(realmail))
                {
                    dic.Add(realmail, 1);
                }
            }
            return dic.Count;
        }
    }