naveenarora
STREAK
00/1459
days
Longest streak/Global longest streak
Language Used
C++, Python, C, Java
Coding Score
1403
Problem Solved
575
Contest Rating
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Campus Mantri
piyushpiyush0121738 points
Contributor
21738 points
Contributor
1 Point
Proficient
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100 Point
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1k Point
Master
Master
10k Point
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50k Point
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SCHOOL (1)
BASIC (93)
EASY (233)
MEDIUM (220)
HARD (28)
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Rearrange a linked list
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Quick Sort on Linked List
- Insert in Sorted Circular Linked List
- Count BST nodes that lie in a given range
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Sum Tree
- Construct Binary Tree from Parent Array
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Reverse alternate levels of a perfect binary tree
- Delete a node from BST
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- Absolute List Sorting
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Max sum in the configuration
- Get Min from Stack
- Serialize and deserialize a binary tree
- Gas Station
- Linked List to Binary Tree
- Check if subtree
- Extreme nodes in alternate order
- Clone a Binary Tree
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Largest BST
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Strongly Connected
- Rat in a Maze Problem - I
- Number of root to leaf paths
- Closest in BST
- BST with Dead End
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Root to leaf paths sum
- Longest Palindrome in Linked List
- Print Nodes having K leaves
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Peak element
- Delete nodes greater than k
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Populate Inorder Successor for all nodes
- XOR Linked List
- Construct expression tree
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct Tree from Inorder & Preorder
- Construct tree from Inorder and LevelOrder
- Count the nodes at distance K from leaf
- Vertical sum
- Mirror of a given node
- Pairs violating BST property
- Isomorphic Trees
- Maximum path sum from any node
- Predecessor and Successor
- Leaves to DLL
- Largest Independent Set Problem
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Normal BST to Balanced BST
- Right Sibling in Binary Tree
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Construct a Full Binary Tree
- Check if two Nodes are Cousins
- Convert Level Order Traversal to BST
- ZigZag Tree Traversal
- Count Number of SubTrees having given Sum
- Vertical Width of a Binary Tree
- C++ Generic sort
- Coin Change - Minimum number of coins
- Swap Kth nodes from ends
- Maximum sum of Non-adjacent nodes
- Mother Vertex
- Count set bits
- Tower Of Hanoi
- Reverse array in groups
- Smallest Positive Missing
- Maximum occured integer
- Wave Array
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Stock buy and sell
- Rotate Array
- Check if array is sorted and rotated
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Unique BST's
- Indexes of Subarray Sum
- Triplet Sum in Array
- Merge Without Extra Space
- Possible paths between 2 vertices
- Level of Nodes
- Rotate by 90 degree
- Subarray with 0 sum
- Subarray range with given sum
- Longest Consecutive Subsequence
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- Infix to Postfix
- K Sized Subarray Maximum
- Kth smallest element
- Minimum Jumps
- Ways to write n as sum
- Stickler Thief
- Ways to Reach the n'th Stair
- nCr
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Lucky Numbers
- Minimum number of jumps
- Find whether path exist
- Kth Smallest
- Implement Trie
- Nth Catalan Number
- Rotten Oranges
- Steps by Knight
- Longest Subarray Of Evens And Odds
- Count subsequences of type a^i, b^j, c^k
- Maximize The Cut Segments
- Longest Span in two Binary Arrays
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Search in Rotated Sorted Array
- Count Full Binary Trees
- Form the Largest Number
- Longest Subarray with Sum K
- Count the Reversals
- Max Sum without Adjacents
- Greater tower sum
- Smallest Absolute Difference
- LCS of three strings
- Longest Common Increasing Subsequence
- First negative in every window of size k
- Find k-th character in string
- Valid Substring
- Number following a pattern
- Friends Pairing Problem
- Collecting Trees
- Modular Exponentiation
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Gold Mine Problem
- Firing employees
- Longest subsequence-1
- Power Set
- Knapsack with Duplicate Items
- nCr
- Partition Equal Subset Sum
- Matchsticks game
- Card Rotation
- Game of Chocolates
- Return two prime numbers
- Game with String
- Find the Safe Position
- Next Permutation
- Rank The Permutations
- Smaller on Left
- Longest Repeating Subsequence
- Longest alternating subsequence
- Decode the string
- Preorder Traversal and BST
- Stream First Non-repeating
- Largest square formed in a matrix
- Geek and Strings
- Check Mirror in N-ary tree
- Negative weight cycle
- Subset Sum Problem
- Subarrays with sum K
- Next Greater Element
- Special Array
- Strange Concatenation
- Largest subtree sum in a tree
- Shortest Path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Koko Eating Bananas
- Frog Jump
- Minimal Cost
- Are we facebook friends?
- Geeky Movement
- Pairs of Adjacent elements
- Reverse a linked list
- Frequency in a Linked List
- Delete N nodes after M nodes of a linked list
- Pairwise swap elements of a linked list
- Node at a given index in linked list
- Linked list of strings forms a palindrome
- Compare two linked lists
- Delete nodes having greater value on right
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Inorder Traversal
- Selection Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- Kth from End of Linked List
- Middle of a Linked List
- Check If Circular Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Transform to Sum Tree
- Intersection Sorted Linked Lists
- Queue using two Stacks
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Stack using Linked List
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Root to leaf path sum
- Square Root
- Nodes without a Sibling
- Postorder from Inorder and Preorder
- Lowest Common Ancestor in a BST
- Binary Search
- Largest subarray of 0's and 1's
- Level Order Line by Line
- BST Keys in a Range
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- Remove every k'th node
- Leaves at Same Level or Not
- Multiply two linked lists
- Josephus problem
- Expression Tree
- Count Occurrence of digit k
- Generate Grey Code Sequences
- Delete in a Singly Linked List
- Kth largest element in BST
- Max Level Sum in Binary Tree
- Longest consecutive sequence in Binary tree
- Level order traversal
- Inorder Successor in BST
- Index of an Extra Element
- Convert Ternary Expression to Binary Tree
- Intersection of Two Linked Lists
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Max and min element in Binary Tree
- Perfect Binary Tree
- Reverse Using Stack
- XOR of a given range
- Full Binary Tree
- Triplet with 0 sum in BST
- Symmetric Tree
- Delete Alternate Nodes
- Construct BST from Postorder
- Merge Lists Alternatingly
- Find the Sum of Last N nodes of the Linked List
- Next Right Node
- Count Pairs whose sum is equal to X
- Depth of node
- Maximum Node Level
- Find length of Loop
- Median of BST
- Leaf under budget
- Linked List Matrix
- Maximum Pairwise Computed Value
- Queue Reversal
- Reverse first K of a Queue
- Remove Half Nodes
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Deletion in a Binary Tree
- Nodes at Odd Levels
- Closest Neighbour in BST
- Brothers From Different Roots
- Exchange the Leaf Nodes
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Rotate doubly Linked List
- C++ Template
- Learn to Comment
- Learning to be precise
- While loop- printTable
- Learning Macros
- Learn to Comment - Java
- Bitwise Operators - Java
- Even Odd - Java
- Xoring and Clearing - Java
- Swap values using References
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Maximum Area Rectangle
- Sum of Big Integers
- BigInteger Multiply
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- Java ArrayList Operation
- Stack Operations
- Frequency in Queue
- Operations on PriorityQueue
- Get min at pop
- Deque Implementations
- Min Heap implementation
- Frequency Game
- Multiset Operations
- Multimap Operations
- Dictionary Usage 2 - Java
- Max and Second Max
- Fibonacci Numbers - Top Down DP
- Fibonacci Numbers - Bottom Up DP
- Coin Change - Number of ways
- Kadane's Algorithm - I
- Kadane's Algorithm - II
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Factorial Of Number
- Digits In Factorial
- GP Term
- Primality Test
- Longest Consecutive 1's
- Exactly 3 Divisors
- Mean And Median of Array
- Power of 2
- Swap odd and even bits
- Minimum adjacent difference in a circular array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Count 1's in binary array
- Floor in a Sorted Array
- Minimum Number in a sorted rotated array
- Print adjacency list
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Transpose of Matrix
- Separate chaining in Hashing
- Naive Pattern Search
- Linear Probing in Hashing
- Quadratic Probing in Hashing
- Check if a string is Isogram or not
- Count Non-Repeated Elements
- Print Non-Repeated Elements
- Anagram
- Winner of an election
- Removing consecutive duplicates
- Removing consecutive duplicates - 2
- Parenthesis Checker
- Generate Binary Numbers
- Minimum Cost of ropes
- Count Digits in a Number
- Digital Root
- Count ways to N'th Stair
- Count number of hops
- Rotate Deque By K
- First Repeating Element
- Union of Arrays with Duplicates
- Reach a given score
- Check Equal Arrays
- Numbers containing 1, 2 and 3
- Search Query for Strings
- Intersection of Arrays with Distinct
- Maximum AND Value
- Move All Zeroes to End
- Min sum formed by digits
- String Manipulation
- Left most and right most index
- Smallest subarray with sum greater than x
- Even Greater than Odd
- Same characters in two strings
- Reorganize The Array
- Second Largest
- Rotate Bits
- Number of occurrence
- Convert an array to reduced form
- First Repeated Character
- Sum of f(a[i], a[j]) over all pairs in an array of n integers
- Print an array in Pendulum Arrangement
- The Counting Game !!
- Print Bracket Number
- Minimum changes to make all substrings distinct
- Karatsuba Algorithm
- K Smallests in the Original Order
- Set Bits
- Rearrange the array
- Nth Fibonacci Number
- Swap two nibbles in a byte
- Palindrome
- Toggle bits in the given range
- Game of Nim
- Exponentiation (Set 2)
- Swap bits
- Number Game
- Game of cells
- BBT counter
- Maximum Diamonds
- Inorder Traversal and BST
- Array to BST
- Sum of k smallest elements in BST
- Check for BST
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Min distance between two given nodes of a Binary Tree
- Subtraction in Linked List
- LRU Cache
- Maximum subset XOR
- Alien Dictionary
- Merge Sort on Doubly Linked List
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Pattern Search KMP
- Trapping Rain Water
- Pattern Search
- Histogram Max Rectangular Area
- Max of min for every window size
- Minimum Cost Path
- Word Ladder I
- Burning Tree
- Merge Without Extra Space
- Ugly Numbers
- Longest Prefix Suffix
- Longest valid Parentheses
- Minimum swap required to convert binary tree to binary search tree
- Maximum number of overlapping Intervals
- Total Number Of Spanning Trees In A Graph
- Rotate Array
- Find Length of Linked List
- Size of Binary Tree
- Count Leaves in Binary Tree
- Postorder Traversal
- Implement stack using array
- Queue using Linked List
- Queue Using Array
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Preorder Traversal
- Search a node in BST
- Equal Sum and XOR
- C++ STL | Set 8 (unordered set)
- Palindromic Array
- Linked List Insertion At End
- C++ Functions (Sum of numbers) | Set 1
- Minimum element in BST
- Circular Linked List Traversal
- Is Linked List Length Even?
- Identical Linked Lists
- Sum of Binary Tree
- Count Non-Leaf Nodes in Tree
- Mrs. S- JAVA Bits Set 1
- C++ Inheritance introduction
- C++ Call by reference
- Java Inheritance
- Logical Operators
- Sort and Reverse Vector
- Front to Back
- Stack designer
- Queue Push & Pop
- Set Operations
- Two digit Sum
- Who has the majority?
- Strongest Neighbour
- Array insert at index
- Array insert at end
- Operations on Stack
- Absolute Value
- Convert Celsius To Fahrenheit
- Bit Difference
- Number is sparse or not
- Print 1 To N Without Loop
- Array Search
- Sorted Array Search
- Left Index
- Adding two matrices
- Multiply the matrices
- Sum of numbers in string
- Sum of Digits of a Number
- Power Using Recursion
- Fibonacci Using Recursion
- Addition Under Modulo
- Multiplication Under Modulo
- Reverse a String
- Insertion in deque
- Deque Traversal
- Keypad typing
- First n Fibonacci
- Find second largest element
- Minimum Product of k Integers
- Type of array
- Immediate Smaller Element
- Rock Paper Scissors!
- Find element at a given Index
- Largest Element in Array
- Jay's Apples
- Rotating an Array
- Multiply left and right array sum
- XOR of all elements
- The AND Gate
- Gray Code
- Set kth bit
- Factor OR Multiple
- Smallest power of 2 greater than or equal to n
- XOR Count Zero and One
- Find the fine
- LCM And GCD
- Message Spreading
- Parity of unsigned integer
- Special Odd Series Sum
- Special Series Sum
- Difference series
- Absolute Difference of 1
- Common Divisors
- Gray to Binary and Binary to Gray
- Anshuman's Favourite Number
- Series X1
- Doctors Clinic
- Repetitive Addition Of Digits
- Sum Terms Nth Row
- Sorted matrix
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