FACEBOOK Coding Interview Problem || Phone Keypad || C++ || Recursion

.................. In this video, we discuss the recursive approach to printing all possible keypad combinations of a given number in C++.
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[sawanpatel]

where is the full lecture ?
please send link.

[itharshahuja]

Sir what about the cases in which input contains 1 and 0?

[phaijalkhan]

sir why are we making a temporary array here, why cant we store answer in output array itself?

[aakashkumarsingh]

Thank you very much sir. You have explained it in the simplest way possible.

[meensvenkat]

sir what happened if we use vector instead of output array

[AbhishekKumar-qzjv]

what is the time space complexity of this code

[AR-nwdv]

Why we are using temp memory .. instead of string the given array how i will solve ...and i saw the solution he is passing the temp array and Changing in output array how it's going cam u explain plzz

[anantharajunikhilbharadwaj]

Your content is good but try to choose small variable names so that all can understand easily!