BuyHatke Software Developer interview questions

I got a call from a consulting firm regarding this opening. Round 1: Hackerank Online test:(1.5 hours) It had two questions. you have to pass all the test cases. Given an array of numbers, print only those numbers which have 1, 2 and 3 as digits. the numbers should be sorted and comma separated. given a sequence of M and N with M representing increasing and N representing decreasing. output the smallest number that follows this pattern.