Alfa Battle - wie es war, Konferenzaufzeichnung und Aufgabenliste

Anfang Juni haben wir Alfa Battle für Java-Entwickler gestartet. Es ist Zeit, darüber zu sprechen, wie alles gelaufen ist, nützliche Videos von den Rednern der Stream-Konferenz "Coding of the Future" (Alfa-Bank, Beeline, X5 Retail Group) zu teilen und unsere Aufgaben zu zeigen. Übrigens über die Aufgaben. Entweder haben wir es übertrieben und die möglichen Teilnehmer überschätzt, oder das Wetter war im Allgemeinen mittelmäßig. Von 1498 Teilnehmern aus 50 Städten hat niemand alle Probleme vollständig gelöst (5 Teile). Daher finden Sie unter dem Schnitt alle Aufgaben mit einer Beschreibung, und wenn Sie sie lösen möchten, können Sie dies ohne Fristen tun. Wir laden gerne diejenigen ein, die es beherrschen







... Am Ende des Beitrags - über die neue Rekrutierungsstrategie. Es gab eine Zeit, in der sich die IT der Alfa-Bank hauptsächlich auf drei Städte konzentrierte - Moskau, St. Petersburg, Jekaterinburg. Jetzt können wir Menschen aus dem ganzen Land betrachten. Und nicht nur.



Vielen Dank an alle, die geantwortet haben - es gab mehr als 1.500 solcher Leute, von denen 198 das Finale erreichten und die besten Ergebnisse zeigten. Ja, es war nicht einfach: Die Aufgaben erwiesen sich als schwieriger als von vielen Teilnehmern erwartet, und das Format der Online-Meisterschaft mit einem Konferenzstrom war offen gesagt angespannt. Dennoch sind 5 Stunden Online-Programmierung keine Retro-Erfahrung in einem Team.



Insgesamt drei Gewinner, die einen Geldpreis sowie Einladungen zur Zusammenarbeit mit uns und mit Partnern der Meisterschaft erhalten haben. Hier sind sie:



1. Platz: Mikhail Burshtein, Moskau (250.000 Rubel)

2. Platz: Alexander Ilyushechkin, Moskau (150.000 Rubel)

3. Platz: Pavel Lyubinsky, St. Petersburg (100.000 Rubel)



Aufgaben



# 1 Wo ist der Geldautomat?



Aufgabendetails

Bedingung



-.

REST API IP:8080.

API – api.json.



- API .

: api.alfabank.ru/node/238

API .

: api.alfabank.ru/start



* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task1





1. deviceId



: GET IP:8080/atms/{deviceId}

:

— 200 AtmResponse

— 404 ErrorResponse ( )



:



GET http://IP:8080/atms/153463
200
{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}




:



GET http://IP:8080/atms/1
404
{
  “status”: “atm not found”
}




18 .



2. (-)



- — .

3 ! -.



payments=true, (. - API ATMServices).



: GET IP:8080/atms/nearest?latitude=string&longitude=string&payments=boolean

: 200 AtmResponse



:
GET http://IP:8080/atms/nearest?latitude=55.66&longitude=37.63
200
{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}




:



GET http://IP:8080/atms/nearest?latitude=55.66&longitude=37.63&payments=true
200
{
  "deviceId": 210612,
  "latitude": "55.66442",
  "longitude": "37.628051",
  "city": "",
  "location": " , . 14",
  "payments": true
}




36 .



3.



- .

, .



: GET IP:8080/atms/nearest-with-alfik?latitude=string&longitude=string&alfik=int

: 200 [AtmResponse]



, WebSocket STOMP .



:



mkdir task1 ; cd task1

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task1/docker-compose.yml

docker-compose up -d




( task1):

docker-compose down

: ws://IP:8100

: { “deviceId”: 0 }

/topic/alfik: { “deviceId”: 0, “alfik”: 0 }



:
 GET http://IP:8080/atms/nearest-with-alfik?latitude=55.66&longitude=37.63&alfik=300000
200
[{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
}]


(.. 153463 — 383026 )



:
GET http://IP:8080/atms/nearest-with-alfik?latitude=55.66&longitude=37.63&alfik=400000
200
[{
  "deviceId": 153463,
  "latitude": "55.6610213",
  "longitude": "37.6309405",
  "city": "",
  "location": " ., 4, . 10",
  "payments": false
},
{
  “deviceId": 153465,
  "latitude": "55.6602801",
  "longitude": "37.633823",
  "city": "",
  "location":"  ., 18",
  "payments": false
}]


( , )



# 2 Analysiere es



Aufgabendetails



Kafka RAW_PAYMENTS .

docker IP:29092 .



Kafka.



:

mkdir task2 ; cd task2

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/data.txt

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/docker-compose.yml

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task2/start.sh

bash start.sh


.



( task2):

docker-compose down



* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task2



:



key1:{"ref":"U030306190000188", "categoryId":1, "userId":"XAABAA", "recipientId":"XA3SZV", "desc":"  ", "amount":10.0}




, key1 — .

.



:

  • Kafka.
  • .
  • REST API . 8081.




RAW_PAYMENTS. .



, .



, Kafka .



.





, , . , ( , - ).



:

  1. consumer-group-id. .
  2. consumer-group. , , ,




docker exec -i broker kafka-consumer-groups --bootstrap-server broker:9092 --all-groups --all-topics --reset-offsets --to-earliest --execute



start.sh, . ,



Swagger-



Swagger- api-swagger.json .





:



key1:{"ref":"ref1", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _1", "amount":10.0}
key2:{"ref":"ref2", "categoryId":2, "userId":"User_1", "recipientId":"User_2", "desc":" _2", "amount":350.56}
key3:{"ref":"ref3", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _3", "amount":700.0}
key4:{"ref":"ref4", "categoryId":3, "userId":"User_1", "recipientId":"User_2", "desc":" _4", "amount":5.99}
key5:{"ref":"ref5", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _5", "amount":10.0}
key6:{"ref":"ref6", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _6", "amount":350.56}
key7:{"ref":"ref7", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _7", "amount":890.0}
key8:{"ref":"ref8", "categoryId":3, "userId":"User_3", "recipientId":"User_2", "desc":" _8", "amount":35.99}
key9:{"ref":"ref9", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _9", "amount":890.0}
key10:{"ref":"ref10", "categoryId":3, "userId":"User_3", "recipientId":"User_2", "desc":" _10", "amount":35.9910}
key11:{"ref":"ref11", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _11", "amount":10.0}
key12:{"ref":"ref12", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _12", "amount":350.56}
key13:{"ref":"ref13", "categoryId":1, "userId":"User_1", "recipientId":"User_2", "desc":" _13", "amount":10.0}
key14:{"ref":"ref14", "categoryId":2, "userId":"User_2", "recipientId":"User_3", "desc":" _14", "amount":350.56}
key15:{"ref":"ref15", "categoryId":4, "userId":"User_1", "recipientId":"User_4", "desc":" _15", "amount":15.00}




1.



( categoryId).

, .



.



GET IP:8081/admin/health



200



:

{"status":"UP"}

<h4>GET http://IP:8081/analytic</h4>
200








:

[
  {
    "userId": "User_3",
    "totalSum": 71.981,
    "analyticInfo": {
      "3": {
        "min": 35.99,
        "max": 35.991,
        "sum": 71.981
      }
    }
  },
  {
    "userId": "User_2",
    "totalSum": 1051.68,
    "analyticInfo": {
      "2": {
        "min": 350.56,
        "max": 350.56,
        "sum": 1051.68
      }
    }
  },
  {
    "userId": "User_1",
    "totalSum": 2891.55,
    "analyticInfo": {
      "1": {
        "min": 10,
        "max": 890,
        "sum": 2520
      },
      "2": {
        "min": 350.56,
        "max": 350.56,
        "sum": 350.56
      },
      "3": {
        "min": 5.99,
        "max": 5.99,
        "sum": 5.99
      },
      "4": {
        "min": 15,
        "max": 15,
        "sum": 15
      }
    }
  }
]




analyticInfo Id .



GET IP:8081/analytic/{userId}



— 200

— 404 + {«status»:”user not found"} ( )







:

GET http://IP:8081/analytic/User_1




:



{
  "userId": "User_1",
  "totalSum": 2891.55,
  "analyticInfo": {
    "1": {
      "min": 10,
      "max": 890,
      "sum": 2520
    },
    "2": {
      "min": 350.56,
      "max": 350.56,
      "sum": 350.56
    },
    "3": {
      "min": 5.99,
      "max": 5.99,
      "sum": 5.99
    },
    "4": {
      "min": 15,
      "max": 15,
      "sum": 15
    }
  }
}




40 .



2.



. :





GET IP:8081/analytic/{userId}/stats



— 200

— 404 + {«status»:”user not found"} ( )

.



:

GET http://IP:8081/analytic/User_1/stats
 :
{
  "oftenCategoryId": 1,
  "rareCategoryId": 2,
  "maxAmountCategoryId": 1,
  "minAmountCategoryId": 3
}




60



3.



.



:

  • , , (recipientId userId )




, .



GET IP:8081/analytic/{userId}/templates



— 200

— 404 + {«status»:”user not found"} ( )

, .



:

GET http://IP:8081/analytic/User_1/templates
 :
[
  {
    "recipientId": "User_2",
    "categoryId": 1,
    "amount": 10
  }
]




# 3 Kostenlose Kasse



Aufgabendetails



- .

REST API IP:8082.

API – api.json.

, , , , .



PostgreSQL.

PostgreSQL:



mkdir task3 ; cd task3

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/docker-compose.yml

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/Dockerfile

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task3/init_db.sql

docker-compose up -d


( task3):

docker-compose down

: IP:5432

DB: alfa_battle

Auth: alfa_battle / qwe123



* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task3





1. id



: GET IP:8082/branches/{id}

:

— 200 Branches

— 404 ErrorResponse ( )



:
GET http://IP:8082/branches/612
200
{
  "id": 612,
  "title": "",
  "lon": 37.6329,
  "lat": 55.7621,
  "address": " ., 13, . 1"
}




:
 GET http://IP:8082/branches/1
404
{
  “status”: “branch not found”
}




8 .



2. (-)



-, , 1.



.



, Latitude Longitude.



: GET IP:8082/branches/lat=string&lon=string

: 200 Branches



:
GET http://IP:8082/branches/lat=55.773284&lon=37.624125
200
{
  "id": 631,
  "title": " ",
  "lon": 37.6227,
  "lat": 55.7695,
  "address": " ., 16/1",
  "distance": 430
}




Distance — , , .



28 .



3.



, — , , , , .



.



: GET IP:8082/branches/{id}/predict?dayOfWeek=int&hourOfDay=int

:

— 200 BranchesWithPredicting

— 404 ErrorResponse ( )



:
GET http://IP:8082/branches/612/predict?dayOfWeek=1&hourOfDay=14
200
{
  "id": 612,
  "title": "",
  "lon": 37.6329,
  "lat": 55.7621,
  "address": " ., 13, . 1",
  "dayOfWeek": 1,
  "hourOfDay": 14,
  "predicting": 117
}




dayOfWeek — , 1, 7

hourOfDay — 0 23

Predicting — , , .



:
GET http://IP:8082/branches/1/predict?dayOfWeek=1&hourOfDay=14
404
{
  “status”: “branch not found”
}


.

, , apache-commons-math3



# 4 Elastische Kredite



Aufgabendetails



1 2 JSON:



person.json — , :

{
     "ID":"29",
     "DocId":"702821510",
     "FIO":"Phoebe Whitehouse",
     "Birthday":"7/12/1971",
     "Salary":"201.02",
     "Gender":"F"
}


, :

ID — ,

DocId — ( 9 )

FIO —

Birthday — MM/dd/yyyy

Salary — , , .. 201.02 20102 .

Gender —



loans.json — , :

{
     "Loan":"631553",
     "PersonId":"68",
     "Amount":"201.02",
     "StartDate":"6/1/2019",
     "Period":"1"
}


, :

Loan — ,

PersonId —

Amount — , , .. 201.02 20 102

StartDate — MM/dd/yyyy

Period —





, ElasticSearch .

REST- ElasticSearch, . IP:8083



ElasticSearch:

mkdir task4 ; cd task4

wget https://raw.githubusercontent.com/evgenyshiryaev/alfa-battle-resources/master/task4/docker-compose.yml

docker-compose up -d


ElasticSearch IP:9200



( task4):

docker-compose down



* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task4





ElasticSearch :



persons

  • Birthday — 1945-05-03
  • Salary — ,




loans

  • PersonId — , Document, DocId Persons.
  • Amount — , .
  • StartDate — , 1945-05-03
  • Period — ,








GET IP:8083/admin/health

200

{«status»:«UP»}





ElasicSearch.



POST IP:8083/loans/loadPersons

200

{«status»:«OK»}



ElasicSearch.

, Document, ElasticSearch .



POST IP:8083/loans/loadLoans

200

{«status»:«OK»}





GET http://IP:8083/loans/getPerson/855406656/
200
{
   "docid": "855406656",
   "fio": "Celina Jackson",
   "birthday": "1961-05-22",
   "salary": 69106.0,
   "gender": "F"
}




400 ( )

{

«status»: «person not found»

}





GET http://IP:8083/loans/getLoan/692826/
200
{
   "loan": "692826",
   "amount": 448900,
   "document": "027665876",
   "startdate": "2017-01-16",
   "period": 48
}


400 ( )

{
   "status": "loan not found"
}






, — Document.



GET http://IP:8083/loans/creditHistory/737767072/
200
{
   "countLoan": 4,
   "sumAmountLoans": 1058400.0,
   "loans": [
       {
           "loan": "434224",
           "amount": 7100,
           "document": "737767072",
           "startdate": "2019-09-18",
           "period": 12
       },
       {
           "loan": "917105",
           "amount": 283600,
           "document": "737767072",
           "startdate": "2019-12-22",
           "period": 12
       },
       {
           "loan": "692147",
           "amount": 300800,
           "document": "737767072",
           "startdate": "2016-08-01",
           "period": 24
       },
       {
           "loan": "145020",
           "amount": 466900,
           "document": "737767072",
           "startdate": "2017-01-16",
           "period": 36
       }
   ]
}




, :

countLoan —

sumAmountLoans —

loans —



,



GET http://IP:8083/loans/creditClosed
200
[
   {
       "loan": "222398",
       "amount": 265400,
       "document": "074658188",
       "startdate": "2017-09-22",
       "period": 12
   },
  
       "loan": "826942",
       "amount": 329400,
       "document": "788117788",
       "startdate": "2016-01-29",
       "period": 48
   },
...
]




, ( ElasticSearch).



GET http://IP:8083/loans/loansSortByPersonBirthday
200
[
   {
       "id": null,
       "docid": "840704451",
       "fio": "John Isaac",
       "birthday": "19.08.1989",
       "salary": 58295.0,
       "gender": "M",
       "loans": [
           {
               "loan": "771916",
               "amount": 337600,
               "document": "840704451",
               "startdate": "2019-11-09",
               "period": 48
           },
           {
               "loan": "504544",
               "amount": 358900,
               "document": "840704451",
               "startdate": "2018-06-10",
               "period": 36
           },
           {
               "loan": "699247",
               "amount": 464400,
               "document": "840704451",
               "startdate": "2018-10-30",
               "period": 36
           },
           {
               "loan": "783101",
               "amount": 139300,
               "document": "840704451",
               "startdate": "2017-02-19",
               "period": 36
           }
       ]
   },
   {
       "id": null,
       "docid": "023665566",
       "fio": "Denny Tanner",
       "birthday": "25.03.1989",
       "salary": 80713.0,
       "gender": "M",
       "loans": [
           {
               "loan": "631553",
               "amount": 403000,
               "document": "023665566",
               "startdate": "2019-06-01",
               "period": 12
           },
           {
               "loan": "598452",
               "amount": 198500,
               "document": "023665566",
               "startdate": "2015-09-28",
               "period": 36
           },
           {
               "loan": "151915",
               "amount": 13600,
               "document": "023665566",
               "startdate": "2019-06-15",
               "period": 12
           },
           {
               "loan": "368342",
               "amount": 350500,
               "document": "023665566",
               "startdate": "2017-02-06",
               "period": 48
           },
           {
               "loan": "633056",
               "amount": 482900,
               "document": "023665566",
               "startdate": "2016-07-01",
               "period": 12
           }
       ]
   },
...
]




# 5 Auf der Promo-Nadel



Aufgabendetails



.

- .

.



REST API IP:8084 :



  • /promo – POST - ( , ). .
  • /receipt – , POST id , (, ), , , .




: /promo, /receipt.



* IP — IP .

* : github.com/evgenyshiryaev/alfa-battle-resources/tree/master/task5





  1. CSV :
  2. API – api.yml






- , -, .

-, - .

- , -, .



2 RoundingMode.HALF_EVEN.



!!! , code review !!!





1. -



:

: POST IP:8084/promo

{}

: 200

: POST IP:8084/receipt

{

«shopId»: 1,

«loyaltyCard»: false,

«positions»:

[

{

«itemId»: «3432166»,

«quantity»: 1

}

]

}

: 200

{

«total»: 141.99,

«discount»: 0.00,

«positions»:

[

{

«id»: «3432166»,

«name»: «...G11 Green .1»,

«price»: 141.99,

«regularPrice»: 141.99

}

]

}



8 .



2. -



/promo - “ ” (LoyaltyCardRule). , .



- , /receipt loyaltyCard=true - , id .



:

: POST IP:8084/promo

{
  "loyaltyCardRules": 
  [
    {
      "shopId": -1,
      "discount": 0.03
    },
    {
      "shopId": 2,
      "discount": 0.05
    }
  ]
}


: 200



: POST IP:8084/receipt

{
  "shopId": 1,
  "loyaltyCard": false,
  "positions":
  [
    {
      "itemId": "3432166",
      "quantity": 1
    }
  ]
}
: 200
{
  "total": 137.73,
  "discount": 4.26,
  "positions":
  [
    {
      "id": "3432166",
      "name": "...G11 Green .1",
      "price": 137.73,
      "regularPrice": 141.99
    }
  ]
}


16 .



3. - N+k



/promo - LoyaltyCardRule ItemCountRule. , .

N+k , N ID k . N=3, k=2:



Videoaufnahmen von Berichten







Alle 16 Berichte unserer Mitarbeiter und Partner von Beeline und der X5 Retail Group finden Sie auf der Event-Website .



Was ist also mit Einstellungen?



Damir Battulin, unser Direktor der Abteilung für die Entwicklung von Online-Kanälen, sprach über Einstellungen, die strategischen Initiativen der Bank, die Prinzipien der Teamarbeit bei Projekten und die Kriterien für die Auswahl neuer Spezialisten für die Entwicklung der Digitalisierung.



: , - . , , , , . . , .



. , . , , . , . .




Auf dieser Seite können Sie alle aktuellen Stellenangebote (IT, Marketing, HR usw.) einsehen .



FĂĽr Liebhaber von Details - das gesamte Interview
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