# Status Problem video Level Completes Likes 183 Convert binary tree to its Sum tree Medium % 1 179 Binary Tree Deletion Beginner % 0 178 Search the Element in a binary tree - With and Without Recursion Beginner % 0 177 Tree Traversals Beginner % 1 174 Dynamic Programming - Maximum Product Cutting Problem Medium % 1 171 Dynamic Programming - Longest Common Subsequence Medium % 0 170 Dynamic Programming - Rod Cutting Problem Medium % 1 169 Dynamic Programming - Coin Change Problem Medium % 1 167 Generate Well Ordered Passwords of a Given Length K Medium % 0 166 All N Length Strings from Given String of Length K Medium % 0 165 Generate all combinations of length N Hard % 0 164 Print All Possible Subsets with Sum equal to a given Number Hard % 0 162 Dynamic Programming - Subset Sum Problem Hard % 0 161 The Word Break Problem Hard % 0 159 Solve the Knight's Tour with Backtracking Hard % 0 158 Backtracking - Search a Word In a Matrix Hard % 0 157 Backtracking - N Queens Problem - Better Solution Hard % 0 156 Backtracking - N Queens Problem Hard % 0 149 Backtracking - Rat In A Maze Puzzle Hard % 0 148 Solve Sudoku Puzzles with Backtracking Hard % 0 Convert binary tree to its Sum tree Binary Tree Deletion Search the Element in a binary tree - With and Without Recursion Tree Traversals Dynamic Programming - Maximum Product Cutting Problem Dynamic Programming - Longest Common Subsequence Dynamic Programming - Rod Cutting Problem Dynamic Programming - Coin Change Problem Generate Well Ordered Passwords of a Given Length K All N Length Strings from Given String of Length K Generate all combinations of length N Print All Possible Subsets with Sum equal to a given Number Dynamic Programming - Subset Sum Problem The Word Break Problem Solve the Knight's Tour with Backtracking Backtracking - Search a Word In a Matrix Backtracking - N Queens Problem - Better Solution Backtracking - N Queens Problem Backtracking - Rat In A Maze Puzzle Solve Sudoku Puzzles with Backtracking 1 2 3 4 5 6 7 8