Can't able to undestand the question

#1

SMART KEYPAD - ADVANCED explaination required

#2

Hi divyam
Lets take the sample case provided in question
input str = 26
vector = {coding}

ans = coding
explanation : if you check nokia keypad phones, 2 has a,b,c and 6 has m,n,o. With 26, possible combinations are am, an,ao,bm,bn,bo,cm,cn,co. co is one of the possible string with 26. Since co is substring of coding, coding is the ans.

Hope you understood the question.
Please mark resolved if satisfied :slight_smile:

#3

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