Problems # Status Problem Level Completes Likes 246 Construct a binary tree from given Inorder and Level Order Traversal Hard % 0 247 Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion) Hard % 0 248 Construct Binary Search Tree from a given Preorder Traversal using Recursion Hard % 0 249 Print The Top View of a Binary Tree Medium % 0 250 Construct a Binary Tree from Given Inorder and Depth-First-Search. Hard % 0 251 Inorder Predecessor and Successor in Binary Search Tree Hard % 0 252 Check if Array Contains All Elements Of Some Given Range Medium % 0 253 Check if Array is Consecutive Integers Beginner % 0 254 Find the subarray with sum to a Given Value. Medium % 0 255 Rearrange Positive and Negative Elements at Alternate Positions in an Array In O(1) Extra Space Hard % 0 256 Find intersection between Two Sorted Arrays. Beginner % 0 257 Given an array arrA[], find the maximum j – i such that arr[j] > arr[i]. Medium % 0 258 Find All Elements in an Array which appears more than N/K times, N is Array Size and k is a Number. Hard % 0 259 Print All The Nodes Which are X distance from the Given Node Hard % 0 260 Print All The Nodes Which are X distance from the Leaf Nodes Medium % 0 261 Print All The Nodes Which are X distance from the Root Medium % 0 262 Find the Distance between Two Nodes of a Binary Tree. Hard % 0 263 Find The Distance From Root To Given Node of a Binary Tree. Medium % 0 264 Print a path from Root to Node in Binary Tree Medium % 0 265 Inorder Successor in Binary Tree Medium % 0 266 Inorder Successor in Binary Search Tree without Using Parent link Hard % 0 267 Inorder Successor in Binary Search Tree Using Parent link Hard % 0 268 Sorted Array to Binary Search Tree of Minimal Height Medium % 0 269 In a Binary Tree, Create Linked Lists of all the nodes at each depth. Hard % 0 270 Level Order Traversal, Print each level in separate line. Medium % 0 271 Find whether a Given Binary Tree is Balanced? Medium % 0 272 Find the Maximum Depth OR Height of a Binary Tree Beginner % 0 273 Add two numbers represented by a linked list, Numbers are Stored in FORWARD order Medium % 0 274 Add two numbers represented by a linked list, Numbers are Stored in REVERSE order Medium % 0 275 Reverse a Linked List - Part 2 Beginner % 0 276 Swap Every Kth Node in a LinkedList Medium % 0 277 Delete a Node in the Middle of a linked list, Given only access to that Node Beginner % 0 278 Find the n'th Node from the end of a given Linked List Beginner % 0 279 Remove Duplicates from an Unsorted Linked list Beginner % 0 280 Check if one string is Rotation of another string Beginner % 0 Construct a binary tree from given Inorder and Level Order Traversal Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion) Construct Binary Search Tree from a given Preorder Traversal using Recursion Print The Top View of a Binary Tree Construct a Binary Tree from Given Inorder and Depth-First-Search. Inorder Predecessor and Successor in Binary Search Tree Check if Array Contains All Elements Of Some Given Range Check if Array is Consecutive Integers Find the subarray with sum to a Given Value. Rearrange Positive and Negative Elements at Alternate Positions in an Array In O(1) Extra Space Find intersection between Two Sorted Arrays. Given an array arrA[], find the maximum j – i such that arr[j] > arr[i]. Find All Elements in an Array which appears more than N/K times, N is Array Size and k is a Number. Print All The Nodes Which are X distance from the Given Node Print All The Nodes Which are X distance from the Leaf Nodes Print All The Nodes Which are X distance from the Root Find the Distance between Two Nodes of a Binary Tree. Find The Distance From Root To Given Node of a Binary Tree. Print a path from Root to Node in Binary Tree Inorder Successor in Binary Tree Inorder Successor in Binary Search Tree without Using Parent link Inorder Successor in Binary Search Tree Using Parent link Sorted Array to Binary Search Tree of Minimal Height In a Binary Tree, Create Linked Lists of all the nodes at each depth. Level Order Traversal, Print each level in separate line. Find whether a Given Binary Tree is Balanced? Find the Maximum Depth OR Height of a Binary Tree Add two numbers represented by a linked list, Numbers are Stored in FORWARD order Add two numbers represented by a linked list, Numbers are Stored in REVERSE order Reverse a Linked List - Part 2 Swap Every Kth Node in a LinkedList Delete a Node in the Middle of a linked list, Given only access to that Node Find the n'th Node from the end of a given Linked List Remove Duplicates from an Unsorted Linked list Check if one string is Rotation of another string 1 2 3 4 5 6 7 8 9