# Status Problem video Level Completes Likes 223 Stock Single Sell Problem - Dynamic Programming - O(n) Medium % 2 221 Identifying Maximum Gain from Sequential Elements Medium % 0 195 Single Threaded Binary Tree Complete Implementation Hard % 0 164 Print All Possible Subsets with Sum equal to a given Number 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 % 0 146 Dynamic Programming - Stairs Climbing Puzzle Beginner % 1 145 Dynamic Programming - Minimum Coin Change Problem Medium % 1 143 Merge K Sorted Arrays Hard % 0 134 Diameter Of a Binary Tree Hard % 1 131 Find the Height of a tree without using Recursion Medium % 0 121 Print All the Subsets of a Given Set (Power Set) Hard % 1 118 Print All Combinations of subset of size K from Given Array Hard % 0 116 Generate All Balanced Parentheses Combinations (N Pairs) Medium % 1 108 Queue with Stacks: Efficient Implementation Using Stack Operations Medium % 0 102 Merge Sort for Linked Lists (In-place Algorithm) Medium % 0 Stock Single Sell Problem - Dynamic Programming - O(n) Identifying Maximum Gain from Sequential Elements Single Threaded Binary Tree Complete Implementation Print All Possible Subsets with Sum equal to a given Number 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 Dynamic Programming - Stairs Climbing Puzzle Dynamic Programming - Minimum Coin Change Problem Merge K Sorted Arrays Diameter Of a Binary Tree Find the Height of a tree without using Recursion Print All the Subsets of a Given Set (Power Set) Print All Combinations of subset of size K from Given Array Generate All Balanced Parentheses Combinations (N Pairs) Queue with Stacks: Efficient Implementation Using Stack Operations Merge Sort for Linked Lists (In-place Algorithm) 1 2 3 4
