ℹ️ 🚴🏾 🍧 Alfa Battle - comment c'était, enregistrement de la conférence et liste des tâches 👃🏼 👩🏿‍🏫 🧛

Début juin, nous avons lancé Alfa Battle for Java Developers. Il est temps de parler de la façon dont tout s'est passé, de partager des vidéos utiles des intervenants de la conférence stream "Coding of the Future" (Alfa-Bank, Beeline, X5 Retail Group) et de montrer nos tâches. Au fait, sur les tâches. Soit nous avons surestimé et surestimé les participants possibles, soit le temps était médiocre, en général, sur 1498 participants de 50 villes, personne n'a complètement résolu tous les problèmes (5 pièces). Par conséquent, sous la coupe, vous trouverez toutes les tâches avec une description et, si vous souhaitez les résoudre, vous pouvez le faire sans aucun délai. Nous inviterons volontiers ceux qui maîtrisent

... À la fin de l'article - sur une nouvelle stratégie d'embauche de spécialistes. Il fut un temps où l'informatique d'Alfa-Bank était principalement concentrée dans trois villes - Moscou, Saint-Pétersbourg, Ekaterinbourg. Maintenant, nous pouvons regarder des gens de partout au pays. Et pas seulement.

Merci à tous ceux qui ont répondu - il y avait plus de 1500 personnes de ce type, dont 198 gars ont atteint la finale qui ont montré les meilleurs résultats. Oui, ce n'était pas facile: les tâches se sont avérées plus difficiles que ce que beaucoup de participants attendaient et le format du championnat en ligne avec un flux de conférence, franchement, était tendu. Pourtant, 5 heures de programmation en ligne ne sont pas une expérience rétro en équipe.

Au total, trois gagnants ont reçu un prix en argent, ainsi que des invitations à travailler pour nous et pour les partenaires du championnat. Les voici:

1ère place: Mikhail Burshtein, Moscou (250 000 roubles)

2e place: Alexander Ilyushechkin, Moscou (150 000 roubles)

3e place: Pavel Lyubinsky, Saint-Pétersbourg (100 000 roubles)

Tâches

# 1 Où est le guichet automatique

Détails de la tâche

État

-.

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 Analysez-le

Détails de la tâche

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 .

.

, , . , ( , - ).

:

consumer-group-id. .
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
}

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 Caisse gratuite

Détails de la tâche

- .

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 Prêts élastiques

Détails de la tâche

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 Sur l'aiguille promo

Détails de la tâche

.

- .

.

REST API IP:8084 :

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

: /promo, /receipt.

* IP — IP .

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

CSV :
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:

Enregistrements vidéo de rapports

Tous les 16 rapports de nos gars et partenaires de Beeline et X5 Retail Group que vous pouvez voir sur le site Web de l'événement .

Alors qu'en est-il de l'embauche?

Damir Battulin, notre directeur du département pour le développement des canaux en ligne, a évoqué l'embauche, les initiatives stratégiques de la banque, les principes du travail d'équipe sur les projets et les critères de choix de nouveaux spécialistes pour le développement de la digitalisation.

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

. , . , , . , . .

Vous pouvez consulter toutes nos offres d'emploi actuelles (informatique, marketing, RH, etc.) sur cette page.

Pour les amateurs de détails - toute l'interview

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Alfa Battle - comment c'était, enregistrement de la conférence et liste des tâches

Tâches

# 1 Où est le guichet automatique

État

1. deviceId

2. (-)

3.

# 2 Analysez-le

Swagger-

1.

GET IP:8081/admin/health

GET IP:8081/analytic/{userId}

2.

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

3.

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

# 3 Caisse gratuite

1. id

2. (-)

3.

# 4 Prêts élastiques

,

# 5 Sur l'aiguille promo

1. -

2. -

3. - N+k

Enregistrements vidéo de rapports

Alors qu'en est-il de l'embauche?

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