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This code was used for the Hackerrank Twitter challenge. The code works well on 6 of the 9 test cases, but they don't tell you what's wrong in the wrong test cases, hence it's quite difficult to know what's wrong.
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| import java.text.SimpleDateFormat | |
| import java.util.{Calendar, Date} | |
| import scala.collection.mutable | |
| object Solution { | |
| def main(args: Array[String]) { | |
| val rawLogs = mutable.MutableList[String]( | |
| "10.10.10.10 - - [27/Sep/2016:05:22:00 +0000] \"GET /1.1/friendships/list.json?user_id=123 HTTP/1.1\" 500 563 19 \"Twitter-iPhone/6.63 iOS/10.0.2 (Apple;iPhone7,2;;;;;1)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:05:22:08 +0000] \"GET /1.1/friendships/list.json?user_id=123 HTTP/1.1\" 200 563 19 \"Twitter-iPhone/6.63 iOS/10.0.2 (Apple;iPhone7,2;;;;;1)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:05:22:31 +0000] \"GET /1.1/friendships/list.json HTTP/1.1\" 200 563 19 \"Twitter-iPhone/6.63 iOS/10.0.2 (Apple;iPhone7,2;;;;;1)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:05:22:59 +0000] \"GET /1.1/friendships/list.json HTTP/1.1\" 200 94 6 \"Twitter-iPhone/6.63 iOS/10.0.1 (Apple;iPhone7,2;;;;;1)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:05:23:01 +0000] \"GET /1.1/users/show.json?include_entities=1&user_id=321 HTTP/1.1\" 200 4160 51 \"Twitter-iPhone/6.63 iOS/9.3.5 (Apple;iPhone7,2;;;;;0)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:22:45:33 +0000] \"GET /1.1/friendships/list.json?user_id=234 HTTP/1.1\" 200 563 19 \"Twitter-iPhone/6.63 iOS/10.0.2 (Apple;iPhone7,2;;;;;1)\" 177.177.177.177", | |
| "10.10.10.10 - - [27/Sep/2016:22:45:51 +0000] \"POST /1.1/friendships/create.json HTTP/1.1\" 200 4193 120 \"Twitter-iPhone/6.62.1 iOS/9.3.5 (Apple;iPhone7,2;;;;;0)\" 177.177.177.177" | |
| ) | |
| // val rawLogs = mutable.MutableList[String]() | |
| // var line = "" | |
| // while ({line = StdIn.readLine(); line != null}) { | |
| // rawLogs += line | |
| // } | |
| val logs = mutable.MutableList[Log]() | |
| val cal = Calendar.getInstance() | |
| rawLogs.foreach(it => { | |
| val date = """(\d\d)\/([A-Z]\w+)\/(\d\d\d\d):(\d\d):(\d\d)""".r | |
| val uri = """\s+(?:\/[A-Za-z0-9$.+!*'(){},~:;=@#%_\-]*)+""".r | |
| val code = """\s(\d+)\s""".r | |
| cal | |
| .setTime(new java.text.SimpleDateFormat("dd/MMM/yyyy:HH:mm") | |
| .parse(date.findFirstIn(it).getOrElse(""))) | |
| val log = Log( | |
| cal.getTime, | |
| uri.findFirstIn(it).getOrElse("").trim, | |
| code.findFirstIn(it).getOrElse("").split("\" ")(0).trim) | |
| logs += log | |
| }) | |
| var currentLog = logs.head | |
| val listFFS = mutable.MutableList[Log](currentLog) | |
| logs.foreach(log => { | |
| if (log.date.after(currentLog.date) || log.url != currentLog.url) { | |
| currentLog = log | |
| listFFS += log | |
| } | |
| listFFS.last.total += 1 | |
| if (log.code != "500") listFFS.last.not500 += 1 | |
| }) | |
| listFFS | |
| .sortBy(it => (it.date, it.url)) | |
| .foreach(it => println(f"${new SimpleDateFormat("yyyy-MM-dd'T'HH:mm").format(it.date)} ${it.url} ${(100 * it.not500 / it.total).toFloat}%.2f")) | |
| } | |
| case class Log(date: Date, url: String, code: String, var total: Int = 0, var not500: Int = 0) | |
| } |
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