# Status Problem Level Completes Likes 211 Backtracking - SUDOKU Solver Hard % 0 212 Dynamic Programming - Stairs Climbing Puzzle Beginner % 1 213 Dynamic Programming - Minimum Coin Change Problem Medium % 1 214 Merge K Sorted Arrays Hard % 0 215 Find a Number occurring odd number of times in a Given array Beginner % 1 216 Rearrange the Array of Given Range N, such that A[i]=i Medium % 0 217 Find a Missing Number From a Sequence of Consecutive Numbers | XOR Method Beginner % 1 218 Populate Next Siblings Pointers in a Given Binary Tree OR Populate Next Right Pointers in Each Node Hard % 0 219 Print All Paths From Root In a Binary Tree Whose Sum is Equal to a Given Number Medium % 0 220 Diameter Of a Binary Tree Hard % 1 221 Do the Reverse Level Order Traversal in a binary tree Medium % 0 222 Find the Deepest Node in a Binary Tree. Medium % 1 223 Print All The Full Nodes in a Binary Tree Beginner % 0 224 Binary Min-Max Heap Implementation Hard % 0 225 Find numbers that are palindrome in the decimal and octal Representations Beginner % 0 226 Find All the Well Ordered Permutations of a Given String. Medium % 0 227 Construct a Special Triangle from a Given Array Beginner % 0 228 Colorful Numbers Hard % 1 229 Goldbach's Conjecture Beginner % 0 230 Print All the Subsets of a Given Set (Power Set) Hard % 1 231 Convert Decimal into Irreducible Fraction Beginner % 0 232 Clock Angle Problem Beginner % 1 233 Print All Combinations of subset of size K from Given Array Hard % 0 234 Track the Maximum Element in a Stack. Medium % 1 235 Print All Possible Valid Combinations Of Parenthesis of Given 'N' Hard % 1 236 Towers Of Hanoi Beginner % 0 237 Generate All Strings of n bits. Medium % 1 238 Find The Missing Duplicate in a Given Array. Beginner % 1 239 Alternate Splitting of a given Linked List Medium % 0 240 Reverse The Doubly Linked List Medium % 0 241 Swap Kth Node from the front with the Kth Node from the End Medium % 0 242 Print the Bottom View of the Binary Tree. Medium % 0 243 Delete X Nodes After Y Nodes In a Linked List Beginner % 0 244 Merge Sort in a Linked list Medium % 0 245 Merge a Linked list into another Linked List at Alternate Positions. Medium % 0 Backtracking - SUDOKU Solver Dynamic Programming - Stairs Climbing Puzzle Dynamic Programming - Minimum Coin Change Problem Merge K Sorted Arrays Find a Number occurring odd number of times in a Given array Rearrange the Array of Given Range N, such that A[i]=i Find a Missing Number From a Sequence of Consecutive Numbers | XOR Method Populate Next Siblings Pointers in a Given Binary Tree OR Populate Next Right Pointers in Each Node Print All Paths From Root In a Binary Tree Whose Sum is Equal to a Given Number Diameter Of a Binary Tree Do the Reverse Level Order Traversal in a binary tree Find the Deepest Node in a Binary Tree. Print All The Full Nodes in a Binary Tree Binary Min-Max Heap Implementation Find numbers that are palindrome in the decimal and octal Representations Find All the Well Ordered Permutations of a Given String. Construct a Special Triangle from a Given Array Colorful Numbers Goldbach's Conjecture Print All the Subsets of a Given Set (Power Set) Convert Decimal into Irreducible Fraction Clock Angle Problem Print All Combinations of subset of size K from Given Array Track the Maximum Element in a Stack. Print All Possible Valid Combinations Of Parenthesis of Given 'N' Towers Of Hanoi Generate All Strings of n bits. Find The Missing Duplicate in a Given Array. Alternate Splitting of a given Linked List Reverse The Doubly Linked List Swap Kth Node from the front with the Kth Node from the End Print the Bottom View of the Binary Tree. Delete X Nodes After Y Nodes In a Linked List Merge Sort in a Linked list Merge a Linked list into another Linked List at Alternate Positions. 1 2 3 4 5 6 7 8 9
