Featured Lists Top 20 Problems on Dynamic programming Top 10 Problems on Backtracking Top 20 Problems on Graph Top 25 Problems on Trees Top 10 Problems on Bits Manipulation Top 15 Problems in LinkedList All Problems # Status Problem video Level Completes Likes 124 Create a Specific Triangle Pattern from an Array Beginner % 0 122 Goldbach's Conjecture Beginner % 0 120 Convert Decimal to Irreducible Fraction (Simplified Form) Beginner % 0 118 Print All Combinations of subset of size K from Given Array Hard % 0 114 Counting Sort Algorithm Medium % 0 113 Towers Of Hanoi Beginner % 0 110 Tricky Sorting: Sort 3 Numbers Without If Statements (or Only Max()) Beginner % 0 109 Find Greatest Common Divisor (GCD) Efficiently with Euclidean Algorithm Beginner % 0 108 Queue with Stacks: Efficient Implementation Using Stack Operations Medium % 0 107 Alternate Splitting of a given Linked List Medium % 0 106 Reverse a Doubly-Linked List (In-place Algorithm) Medium % 0 105 Swapping Nodes in a Linked List (Kth Position) Medium % 0 104 Print the Bottom View of a Binary Tree Medium % 0 103 Delete X Nodes After Y Nodes In a Linked List Beginner % 0 102 Merge Sort for Linked Lists (In-place Algorithm) Medium % 0 101 Merge a Linked list into another Linked List at Alternate Positions Medium % 0 100 AVL Tree - Insertion Hard % 0 99 Construct a binary tree from given Inorder and Level Order Traversal Hard % 0 98 Construct Binary Search Tree from a given Preorder Traversal Using Stack (Without Recursion) Hard % 0 97 Construct Binary Search Tree from a given Preorder Traversal using Recursion Hard % 0 96 Print The Top View of a Binary Tree Medium % 0 95 Construct a Binary Tree from Given Inorder and Depth-First-Search Hard % 0 94 Depth First Search/Traversal in Binary Tree Beginner % 0 93 Inorder Predecessor and Successor in Binary Search Tree Hard % 0 92 Check if Array Contains All Elements Of Some Given Range Medium % 0 91 Check if Array is Consecutive Integers Beginner % 0 90 Find Subarray with Sum Equal to a Target Value Medium % 0 89 Find Smallest Subarray Exceeding a Target Sum Medium % 0 88 Rearrange Array: Positive and Negative Elements Alternating Hard % 0 87 Find Intersection of Two Sorted Arrays Beginner % 0 86 Find Kth Smallest or Largest element in an Array Medium % 0 85 Find Maximum Distance Between Increasing Elements in Array Medium % 0 84 Elements in an Array Occurring More Than N/K Times Hard % 0 83 Find Element in Rotated Sorted Array Medium % 0 82 Find Nodes at Distance X from a Given Node in a Tree Hard % 0 Create a Specific Triangle Pattern from an Array Goldbach's Conjecture Convert Decimal to Irreducible Fraction (Simplified Form) Print All Combinations of subset of size K from Given Array Counting Sort Algorithm Towers Of Hanoi Tricky Sorting: Sort 3 Numbers Without If Statements (or Only Max()) Find Greatest Common Divisor (GCD) Efficiently with Euclidean Algorithm Queue with Stacks: Efficient Implementation Using Stack Operations Alternate Splitting of a given Linked List Reverse a Doubly-Linked List (In-place Algorithm) Swapping Nodes in a Linked List (Kth Position) Print the Bottom View of a Binary Tree Delete X Nodes After Y Nodes In a Linked List Merge Sort for Linked Lists (In-place Algorithm) Merge a Linked list into another Linked List at Alternate Positions AVL Tree - Insertion 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 Depth First Search/Traversal in Binary Tree 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 Subarray with Sum Equal to a Target Value Find Smallest Subarray Exceeding a Target Sum Rearrange Array: Positive and Negative Elements Alternating Find Intersection of Two Sorted Arrays Find Kth Smallest or Largest element in an Array Find Maximum Distance Between Increasing Elements in Array Elements in an Array Occurring More Than N/K Times Find Element in Rotated Sorted Array Find Nodes at Distance X from a Given Node in a Tree 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
