10.9 Letter Phone (Backtracking)-Interviewbit #backtracking#interview#recursion

#backtracking#recursion#interviewbit#interview#algorithm#datastrucutres#programming#coding#code#coding #programming #programmer #code #python #coder #technology #codinglife #cpp #c #tech #computerscience #software #softwaredeveloper #softwareengineer #programmers #bhfyp this video consists of a topic from the interview bit backtracking and further videos will be uploaded soon. till then for any doubts write in the comment section. ques- https://www.interviewbit.com/problems/letter-phone/?utm_medium=referral&utm_source=https://www.interviewbit.com/ Instagram ID-https://www.instagram.com/sarthak_pruthi_/ LinkedIn ID-https://www.linkedin.com/in/sarthak-pruthi-884415175/ don't forget to SUBSCRIBE. explaining question: (0:00) Approach: (1:10) Recursive Tree & Complexity: (4:00) Code: (8:00) Mapping Problem: (12:55) Time Complexity Analysis: (18:20)