Unique Power Set
Concepts Used Back Tracking Difficulty Level Medium Problem Statement : Given N integers print all the distinct power sets of the sequence in lexicographical order. See original problem statement here...
Possible Numbers
Concepts Used Back Tracking Difficulty Level Easy Problem Statement : Given a string, we have to find total number of different sequences that can be formed using the letters in...
Phone Number
Concepts Used Backtracking Difficulty Level Easy Problem Statement : Given a string containing numeric digits from 2 to 9 inclusive, return all possible letter combinations that the number could represent...
Possible Attack-2
Concepts Used Back Tracking Difficulty Level Hard Problem Statement : Given N integers print all distinct combinations. See original problem statement here Solution Approach : Introduction : Idea is to...
Grey Code
Concepts Used Back Tracking Difficulty Level Hard Problem Statement : Given a non-negative integer n representing the total number of bits , we need to print the sequence of gray...
Time Bits
Concepts Used Back Tracking Difficulty Level Easy Problem Statement : Given n set bits, we have to determine all the time that can be represented by those number of set...
Creating Words
Concepts Used Back Tracking Difficulty Level Hard Problem Statement : Given a matrix of characters with n rows and m columns, and few words. We have to find out if...