Objective c array grouping?

Question

Objective-C

Hello! there is an array of data like
{"items":[{"id":14167,"src":"[phone]","dst":"[phone]","calldate":1487326257000,"billsec":2,"status" :"ANSWER","direction":null,"issendme":false,"price":0,"currency":"RUB"},{"id":14171,"src":"[phone]","dst ":"[phone]","calldate":1487326870000,"billsec":0,"status":"CANCEL","direction":null,"issendme":false,"price":0,"currency":" RUB"},{"id":14265,"src":"[phone]","dst":"[phone]","calldate":1487425709000,"billsec"
Tell me how to group an array by dst and status, as implemented in a native iOS application