Problems # Status Problem Level Completes Likes 491 Find all common numbers in given three sorted arrays. Beginner % 0 492 Level Order Traversal in Zig Zag pattern OR Print in Spiral Pattern Hard % 0 493 Find the first repeated element in an array by its index Medium % 0 494 Minimum number that cannot be formed by any subset of an array Beginner % 0 495 Determine whether given binary tree is binary search tree(BST) or not Medium % 0 496 Find the Size of the Binary Tree Beginner % 0 497 Given two binary trees, check if one binary tree is a subtree of another Medium % 1 498 Print a path from Root to Node in Binary Tree Medium % 0 499 Inorder Successor in Binary Tree Medium % 0 500 Inorder Successor in Binary Search Tree without Using Parent link Hard % 0 501 Inorder Successor in Binary Search Tree Using Parent link Hard % 0 502 Sorted Array to Binary Search Tree of Minimal Height Medium % 0 503 In a Binary Tree, Create Linked Lists of all the nodes at each depth. Hard % 0 504 Level Order Traversal, Print each level in separate line. Medium % 0 505 Find whether a Given Binary Tree is Balanced? Medium % 0 506 Get the Height of a Node in a Binary Tree Medium % 0 507 Find the Maximum Depth OR Height of a Binary Tree Beginner % 0 508 Add two numbers represented by a linked list, Numbers are Stored in FORWARD order Medium % 0 509 Add two numbers represented by a linked list, Numbers are Stored in REVERSE order Medium % 0 510 Reverse the binary representation of a number. Medium % 0 511 Binary Search Tree (BST) Complete Implementation. Beginner % 0 512 Reverse a Linked List - Part 2 Beginner % 0 513 Swap Every Kth Node in a LinkedList Medium % 0 514 Delete a Node in the Middle of a linked list, Given only access to that Node Beginner % 0 515 Find the n'th Node from the end of a given Linked List Beginner % 0 516 Remove Duplicates from an Unsorted Linked list Beginner % 0 517 Check if one string is Rotation of another string Beginner % 0 518 String Compression using count of repeated characters - Run Length Encoding Beginner % 0 519 Replace all spaces in a String with '%20' Medium % 0 520 Find Whether Two Strings are Permutation of each other Beginner % 1 521 Find Intersection Point in Two Linked List Medium % 0 522 Find the Loop in a Linked list, find its length and Break the Loop Medium % 0 523 Reverse a Linked List Beginner % 0 524 Count All Paths from Top left to bottom right in Two Dimensional Array including Diagonal Paths Medium % 0 525 Print All Paths from Top left to bottom right in Two Dimensional Array Medium % 0 Find all common numbers in given three sorted arrays. Level Order Traversal in Zig Zag pattern OR Print in Spiral Pattern Find the first repeated element in an array by its index Minimum number that cannot be formed by any subset of an array Determine whether given binary tree is binary search tree(BST) or not Find the Size of the Binary Tree Given two binary trees, check if one binary tree is a subtree of another 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? Get the Height of a Node in a Binary Tree 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 the binary representation of a number. Binary Search Tree (BST) Complete Implementation. 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 String Compression using count of repeated characters - Run Length Encoding Replace all spaces in a String with '%20' Find Whether Two Strings are Permutation of each other Find Intersection Point in Two Linked List Find the Loop in a Linked list, find its length and Break the Loop Reverse a Linked List Count All Paths from Top left to bottom right in Two Dimensional Array including Diagonal Paths Print All Paths from Top left to bottom right in Two Dimensional Array 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
