Featured Lists

Top 20 Problems on Dynamic programming

Top 10 Problems on Backtracking

Top 20 Problems on Graph

Top 25 Problems on Trees

All Problems

# Status Problem Level Completes Likes
421

Sort Names by their Last Names.

Beginner % 0
422

Backtracking - Rat In A Maze Puzzle

Hard % 0
423

Backtracking - SUDOKU Solver

Hard % 0
424

Introduction To Backtracking Programming

Beginner % 0
425

Merge K Sorted Arrays

Hard % 0
426

Find the Deepest Left Node in a Binary Tree.

Medium % 0
427

Rearrange the Array of Given Range N, such that A[i]=i

Medium % 0
428

Find the Max element in a Given Binary Tree

Beginner % 0
429

Populate Next Siblings Pointers in a Given Binary Tree OR Populate Next Right Pointers in Each Node

Hard % 0
431

Do the Reverse Level Order Traversal in a binary tree

Medium % 0
432

Find the Height of a tree without using Recursion

Medium % 0
434

Binary Min-Max Heap Implementation

Hard % 0
435

Magic Index - Find Index In Sorted Array Such That A[i] = i.

Beginner % 0
436

Find numbers that are palindrome in the decimal and octal Representations

Beginner % 0
437

Find All the Well Ordered Permutations of a Given String.

Medium % 0
438

Find the Increasing Triplet Sub-sequence in an array

Medium % 0
439

Construct a Special Triangle from a Given Array

Beginner % 0
440

Colorful Numbers

Hard % 0
441

Goldbach's Conjecture

Beginner % 0
442

Convert Decimal into Irreducible Fraction

Beginner % 0
444

Track the Maximum Element in a Stack.

Medium % 0
445

Counting Sort

Medium % 0
446

Towers Of Hanoi

Beginner % 0
447

Sort 3 Integers without using if condition OR use only Max() function.

Beginner % 0
448

Euclidean algorithm - Greatest Common Divisor(GCD)

Beginner % 0
449

Implement Queue Using Stacks

Medium % 0
450

Alternate Splitting of a given Linked List

Medium % 0
451

Reverse The Doubly Linked List

Medium % 0
452

Swap Kth Node from the front with the Kth Node from the End

Medium % 0
454

Delete X Nodes After Y Nodes In a Linked List

Beginner % 0
455

Merge Sort in a Linked list

Medium % 0

Sort Names by their Last Names.

Backtracking - Rat In A Maze Puzzle

Backtracking - SUDOKU Solver

Introduction To Backtracking Programming

Merge K Sorted Arrays

Find the Deepest Left Node in a Binary Tree.

Rearrange the Array of Given Range N, such that A[i]=i

Find the Max element in a Given Binary Tree

Populate Next Siblings Pointers in a Given Binary Tree OR Populate Next Right Pointers in Each Node

Do the Reverse Level Order Traversal in a binary tree

Find the Height of a tree without using Recursion

Binary Min-Max Heap Implementation

Magic Index - Find Index In Sorted Array Such That A[i] = i.

Find numbers that are palindrome in the decimal and octal Representations

Find All the Well Ordered Permutations of a Given String.

Find the Increasing Triplet Sub-sequence in an array

Construct a Special Triangle from a Given Array

Colorful Numbers

Goldbach's Conjecture

Convert Decimal into Irreducible Fraction

Track the Maximum Element in a Stack.

Counting Sort

Towers Of Hanoi

Sort 3 Integers without using if condition OR use only Max() function.

Euclidean algorithm - Greatest Common Divisor(GCD)

Implement Queue Using Stacks

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

Delete X Nodes After Y Nodes In a Linked List

Merge Sort in a Linked list