nobita04
STREAK
14/1477
days
Longest streak/Global longest streak
Language Used
C++, Python, C
Coding Score
1599
Problem Solved
659
Contest Rating
__
Campus Mantri
hardeepsingh0491 points
Contributor
91 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
0 submissions in current year
SCHOOL (3)
BASIC (81)
EASY (298)
MEDIUM (252)
HARD (25)
- Sorting Elements of an Array by Frequency
- Nearly Sorted Algorithm
- 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
- Rearrange linked list in-place
- Insert in Sorted Circular Linked List
- Count BST nodes that lie in a given range
- Merge Sort
- Quick Sort
- Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Heap Sort
- Merge two sorted linked lists
- Add all greater values to every node in a BST
- Sum Tree
- Connect Nodes of Levels
- Flattening a Linked List
- Diagonal Tree Traversal
- Tree Boundary Traversal
- Reverse alternate levels of a perfect binary tree
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Maximum difference between node and its ancestor
- Absolute List Sorting
- Max sum path in two arrays
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Find kth element of spiral matrix
- Gas Station
- Wildcard Pattern Matching
- Check if subtree
- Remove loop in Linked List
- Dijkstra Algorithm
- Largest BST
- Implement Atoi
- Palindrome Linked List
- Rat in a Maze Problem - I
- Bipartite Graph
- Number of root to leaf paths
- Closest in BST
- Delete keys in a Linked list
- Merge two BST 's
- Count distinct elements in every window
- Trie | (Delete)
- Merge k Sorted Arrays
- Root to leaf paths sum
- Find triplets with zero sum
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Level order traversal
- Peak element
- Merge Sort for Linked List
- Union of Two Linked Lists
- Ancestors in Binary Tree
- Binary Tree to CDLL
- Pair Sum in BST
- Root to Leaf Paths
- Occurences of 2 as a digit
- Populate Inorder Successor for all nodes
- Counting elements in two arrays
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Modify Linked List-1
- Construct Tree from Inorder & Preorder
- Construct tree from Inorder and LevelOrder
- Vertical sum
- Insert in Sorted way in a Sorted DLL
- Maximum path sum from any node
- Predecessor and Successor
- Leaves to DLL
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Construct Tree from Preorder Traversal
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- Check if two Nodes are Cousins
- ZigZag Tree Traversal
- Count Number of SubTrees
- Vertical Width of a Binary Tree
- C++ Generic sort
- Maximum sum of Non-adjacent nodes
- Reverse array in groups
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Binary Array Sorting
- Two Repeated Elements
- Unique BST's
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Sort by Absolute Difference
- Triplet Sum in Array
- Merge Without Extra Space
- Spirally traversing a matrix
- Search in a sorted Matrix
- Subarray with 0 sum
- Subarray range with given sum
- Subarrays with equal 1s and 0s
- Sort Elements by Decreasing Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Postfix Evaluation
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Combination Sum
- Stickler Thief
- Ways to Reach the n'th Stair
- Egg Dropping Puzzle
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Sort according to an Array
- Preorder to BST
- Zero Sum Subarrays
- Kth Smallest
- Shortest Common Supersequence
- Steps by Knight
- Count only Repeated
- Maximize The Cut Segments
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- Generate Parentheses
- Sort 0s, 1s and 2s
- Sum of Subarrays
- Equal Sum
- Top k numbers in a stream
- Maximize Number of 1's
- Sum of Middle elements of two sorted arrays
- Count Occurences of Anagrams
- Search in Rotated Sorted Array
- Print Binary Tree levels in sorted order
- Water Collection
- Row with max 1s
- Sort in specific order
- Nuts and Bolts Problem
- Rotate a Matrix
- Longest Subarray with Sum K
- Max Sum without Adjacents
- Maximum Sum Path in Two Arrays
- k largest elements
- Longest Common Substring
- Valid Expression
- K-th element of two Arrays
- LCS of three strings
- First negative in every window of size k
- Number of palindromic strings
- Minimum sum
- Not a subset sum
- Minimize the Heights II
- First and Last Occurrences
- Permutations of a String
- String Subsequence Game
- Unique Number II
- Max possible amount
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Palindromic Strings
- Perfect Sum Problem
- K-Palindrome
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Minimum Cost To Make Two Strings Identical
- Knapsack with Duplicate Items
- nCr
- Partition Equal Subset Sum
- Matchsticks game
- Subset Sums
- Number of paths
- Nth Natural Number
- Game with String
- Rotate a Matrix by 180 Counterclockwise
- Next Permutation
- Kth Largest in a Stream
- 7 Segment Display
- Check Mirror in N-ary tree
- Height Using Parent Array
- Reverse Spiral Form of Matrix
- Number of minimum picks to get 'k' pairs of socks from a drawer
- Spiral Matrix
- Valid Pair Sum
- Dam of Candies
- Repeated String Match
- Bit Difference
- Ruling Pair
- Triplets in Sorted Linked List
- Restrictive Candy Crush
- Help Classmates
- Restricted Pacman
- Valentine Sum
- Lucy's Neighbours
- Escape the Forbidden Forest
- Iterative Inorder
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- Longest Palindromic Substring
- Form a palindrome
- Player with max score
- Subarrays with sum K
- Partition a Linked List around a given value
- Searching an element in a sorted array (Ternary Search)
- Distribute N candies among K people
- Substrings of length k with k-1 distinct elements
- Maximum sum leaf to root path
- BST to greater sum tree
- Paths from root with a specified sum
- Cousins of a given node
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Subsets
- IPL 2021 - Match Day 2
- Make Subsequence
- Robots
- Hit most Balloons
- Concatenate Equal to Target
- Exactly one swap
- Maximum Winning score
- Compute Before Matrix
- Winner of an election
- Sahil love good scorer
- Longest Subarray with atmost K Even elements
- Geek and his Marks
- K larger values
- Geek-onacci Number
- Reverse a linked list
- Frequency in 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
- Remove duplicates from an unsorted linked list
- Split a Linked List into two halves
- Delete in a Doubly Linked List
- Inorder Traversal
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- 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
- Transform to Sum Tree
- Intersection Sorted Linked Lists
- Find Transition Point
- 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
- Implement stack using array
- 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
- Run Length Encoding
- Largest subarray of 0's and 1's
- Remove Duplicates Sorted Array
- Level Order Line by Line
- BST Keys in a Range
- Minimum Depth of a Binary Tree
- Remove Duplicates from an array
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Equilibrium index of an array
- Remove every k'th node
- Leaves at Same Level or Not
- Third largest element
- Match specific pattern
- Josephus problem
- Expression Tree
- Max distance between same elements
- Count Occurrence of digit k
- Delete in a Singly Linked List
- Kth largest element in BST
- Array Duplicates
- Max Level Sum in Binary Tree
- Special Stack
- Three way partitioning
- Inorder Successor in BST
- Index of an Extra Element
- Intersection of Two Linked Lists
- Insert in a Sorted List
- Play with an array
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- Reverse Using Stack
- XOR of a given range
- Full Binary Tree
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Depth of node
- Maximum Node Level
- Find length of Loop
- Median of BST
- Find n/k th node in Linked list
- Maximum Pairwise Computed Value
- Queue Reversal
- Reverse first K of a Queue
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Nodes at Odd Levels
- Brothers From Different Roots
- Sum of Leaf Nodes at Min Level
- Tilt of Binary Tree
- Delete Mid of a Stack
- Rotate doubly Linked List
- C++ Multi-level inheritance
- C++ Function overloading
- C++ Template
- The New Line
- Data Types
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- While loop- printTable
- Learning Macros
- Swap the array elements
- Count the Specials
- Matrix Interchange
- Predict the Column
- Swap values using References
- Swap the objects
- Structs and Objects
- Two Dimensional World
- Learning Structs
- Delete Array
- Find the Frequency
- Back to Front
- Pair Sum in Vector
- Student of the Year
- Get min at pop
- Deque Implementations
- Multiset Operations
- Multimap Operations
- Pair Sum Existence
- Max and Second Max
- Check K-th Bit
- Longest Consecutive 1's
- 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
- Roof Top
- Closet 0s 1s and 2s
- Print adjacency list
- Anagram
- Winner of an election
- String Rotated by 2 Places
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum indexed character
- Generate Binary Numbers
- K largest elements
- N meetings in one room
- Largest number with given sum
- Count ways to N'th Stair
- Count number of hops
- Pattern searching
- First Repeating Element
- Union of Arrays with Duplicates
- Check Equal Arrays
- Numbers containing 1, 2 and 3
- Missing in Array
- Product array puzzle
- Search an element in sorted and rotated array
- Intersection of Arrays with Distinct
- Minimum Absolute Difference
- Mean of range in array
- Adding One
- Max Value Permutation
- Missing And Repeating
- Cumulative frequency of count of each element in an unsorted array
- Non-Repeating Element
- Last seen array element
- Find Kth Rotation
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- String Duplicates Removal
- Minimize the sum of product
- Move all negative elements to end
- Unusual String Sort
- Count the triplets
- Permutations in array
- Bitonic Point
- Find Duplicate Element
- Single Number
- Alternate Positive Negative
- Check if actual binary representation of a number is palindrome
- Remaining String
- Closing bracket index
- Common Subsequence
- Remove b and ac from a given string
- Palindrome Sentence
- Check if the number is balanced
- Rearrange a string
- Ordering of strings
- Remove Duplicates
- Facing the sun
- Count Substrings
- Twice Counter
- Word with maximum frequency
- Swap the closest and farthest digits
- Bitonic Generator Sort
- Two Sum - Pair with Given Sum
- Second most repeated string in a sequence
- Check if array contains contiguous integers
- Rearrange to Make arr[i] = i
- Find all pairs with a given sum
- Number of occurrence
- Modify the Array
- Convert an array to reduced form
- Check if array is sorted
- Find missing in second array
- Longest Common Prefix of Strings
- Largest Fibonacci Subsequence
- Special array reversal
- Counts Zeros Xor Pairs
- Two sum -Pairs with 0 Sum
- Segregate 0s and 1s
- Play With OR
- Ishaan and Sticks
- Merging two unsorted arrays in sorted order
- Count the Zeros
- Distinct absolute array elements
- Palindrome String
- Total count
- Search array with adjacent diff at most k
- Fitting The Array
- Pangram Strings
- Pair with given sum in a sorted array
- Pattern Searching
- Print Bracket Number
- Divisible by 7
- Shop in Candy Store
- Minimum changes to make all substrings distinct
- Common Subsequence OldP
- Minimum Operations
- Number of 1 Bits
- Find the Highest number
- Midori and chocolates
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Change Bits
- Number of factors
- Maximum Sum Problem
- Minimum insertions to sort an array
- Minimum number of deletions to make a sorted sequence
- Find sum of divisors
- Count numbers containing 4
- Amicable Pair
- Divisible Numbers
- Assign Mice Holes
- Find maximum number
- Reach the Nth point
- Minimum number of Coins
- Nth item through sum
- Palindrome numbers
- Optimal walk
- Maximum height of the staircase
- Incomplete Array
- Array's Game
- Discovering Atlantis
- Game of cells
- Maximize Toys
- Integral Root
- Squares in N*N Chessboard
- Find smallest values of x and y
- Form a number divisible by 3 using array digits
- Subtraction and two numbers
- Sum of First N Natural Numbers
- BBT counter
- Tom and Jerry
- Multiply two polynomials
- Inorder Traversal and BST
- Rearrange Geek and his Classmates
- Array to BST
- Rearrange Geek and his Classmates
- Sum of k smallest elements in BST
- Plus One
- Sum of two numbers without using arithmetic operators
- Even and Odd
- Largest value in each level
- Smallest window containing 0, 1 and 2
- Can Make Triangle
- Matrix Operations
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Min distance between two given nodes of a Binary Tree
- Serialize and deserialize a binary tree
- Max rectangle
- Merge Sort on Doubly Linked List
- Fixing Two nodes of a BST
- String Permutations
- Trapping Rain Water
- Merge Without Extra Space
- Search Pattern
- Count Smaller elements
- Number of distinct subsequences
- Edit Distance
- Check Tree Traversal
- Longest valid Parentheses
- Smallest Positive Integer that can not be represented as Sum
- Secret Cipher
- 132 Geeky Buildings
- Shortest Range In BST
- Search Pattern (Z-algorithm)
- Search Pattern (Rabin-Karp Algorithm)
- Maximum XOR subarray
- Maximum Selling cost
- Rotate Array
- Sort String
- Print Linked List
- Find Length of Linked List
- Size of Binary Tree
- Count Leaves in Binary Tree
- Postorder Traversal
- 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)
- Minimum element in BST
- Circular Linked List Traversal
- Is Linked List Length Even?
- Identical Linked Lists
- Modular Node
- Sum of Binary Tree
- Insert in Middle of Linked List
- Count Non-Leaf Nodes in Tree
- Start Coding
- Count Odd and Even
- Sort and Reverse Vector
- Front to Back
- Stack designer
- Queue Push & Pop
- Set Operations
- Sum Array Puzzle
- Print 1 To N Without Loop
- Array Search
- Reverse a String
- First n Fibonacci
- Binary Array Sorting
- C++ Hello World
- Count pair sum
- Balanced Array
- Sort a String
- Change the string
- Maximum product of two numbers
- Value equal to index value
- Fighting the darkness
- Reverse sub array
- A guy with a mental problem
- First 1 in a Sorted Binary Array
- Max and Min Product from 2 Arrays
- Last index of One
- Largest Element in Array
- Rotate Array by One
- Game with nos
- One odd Occuring
- Ishaan Loves Chocolates
- Minimum number to form the sum even
- Count of smaller elements
- Min and Max in Array
- Multiply left and right array sum
- Print first letter of every word in the string
- Remove character
- Red OR Green
- Check set bits
- Set kth bit
- Change all even bits in a number to 0
- set-bits and number
- House Robber
- Maximum Area
- Binary Shift to Divide
- Check perfect square
- Factorial
- Binary number to decimal number
- Sum of elements in a matrix
- Matching Pair
- Check if the number is Fibonacci
- Anshuman's Favourite Number
- Mind Game
- Swap two numbers
- Height of Heap
- Half N by M
- Minimum difference pair
- The Lazy Caterer's Problem
- Sum of product of x and y with floor(n/x) = y
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