- Binary String
- Power of 2
- Nth Fibonacci Number
- Majority Element
- Shortest path from 1 to n
- Count possible triangles
- Dice throw
- Permutations of a given string
- Parity of unsigned integer
- Missing number in array
- Array of alternate +ve and -ve no.s
- Segregate Even and Odd numbers
- Count total set bits
- Number is sparse or not
- Bit Difference
- Number of occurrence
- Maximum repeating number
- k largest elements
- Check if a number is power of another number
- Find position of set bit
- Sum of all prime numbers between 1 and N.
- Ways To Tile A Floor
- Generate Binary Numbers
- Shortest direction
- Find the Odd Occurence
- Angle between hour and minute hand
- Maximum Possible Sum of Products
- Rotating an Array
- Number of Integer solutions
- Help the Old Man!!!
- Minimize string value
- Rotate by 90 degree
- Reverse array in groups
- The OR Gate
- The XOR Gate
- Set Bits
- Longest Consecutive 1's
- Reverse each word in a given string
- Replace the Bit
- Squares in a Matrix
- Sum of dependencies in a graph
- Sort in specific order
- Check if two arrays are equal or not
- Find first set bit
- Does array represent Heap
- Find the element that appears once in sorted array
- Arranging the array
- First element to occur k times
- Check whether K-th bit is set or not
- Remove Duplicates from unsorted array
- URLify a given string
- Pair cube count
- Rightmost different bit
- Difficulty of sentence
- Toggle bits given range
- Print first n Fibonacci Numbers
- Count triplets with sum smaller than X
- Print Matrix in snake Pattern
- Closest Number
- Boolean String Value
- Sort first half in ascending and second half in descending
- Remove common characters and concatenate
- Find unique element
- Find the fine
- Game of Function
- Pairing the brackets
- Unit Digit
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Delete node in Doubly Linked List
- Inorder Traversal
- Count Leaves in Binary Tree
- Height of Binary Tree
- Finding middle element in a linked list
- Circular Linked List
- Postorder Traversal
- Square root
- Doubly linked list Insertion
- Convert to Roman No
- Preorder Traversal
- Implement strstr
- Implement Atoi
- Minimum distance between two numbers
- Find triplets with zero sum
- Linked List Insertion
- Minimum element in BST
- Circular Linked List Traversal
- Delete Alternate Nodes
- Maximum in Struct Array
- Queue Reversal
- Sum of Binary Tree
- Insert in Middle of Linked List
- longest substring containing '1'

Name

Nikhil Jindal

Institution

Rank in Institute

#17

Courses Attended

Campus Ambassador

Other Profile Link

Overall Coding Score: 1387

Monthly Coding Score: 0

Weekly Coding Score: 0

- Frequencies of Limited Range Array Elements
- Anagram
- Number of Unique Paths
- Wave Array
- Print Pattern
- Search in a Rotated Array
- Magic Number
- Trailing zeroes in factorial
- Maximize Number of 1's
- Non Repeating Character
- Minimum number of Coins
- Sum of Middle Elements of two sorted arrays
- First Repeating Element
- Reverse words in a given string
- Isomorphic Strings
- Move all zeroes to end of array
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Two numbers with sum closest to zero
- Count increasing Subarrays
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Count distinct pairs with difference k
- Maximum Product Subarray
- N meetings in one room
- Maximum sum increasing subsequence
- Facing the sun
- Max Sum without Adjacents
- Key Pair
- Maximum Difference
- Add Binary Strings
- Product array puzzle
- Length Unsorted Subarray
- Reverse Bits
- Count Smaller elements
- Subarray with given sum
- Adjacents are not allowed
- Leaders in an array
- Count number of hops
- Equal to product
- Count pairs with given sum
- Copy Set Bits in Range
- Triplet Sum in Array
- Two Repeated Elements
- Overlapping rectangles
- Minimum element in a sorted and rotated array
- Search in a matrix
- Number Of Open Doors
- 0 - 1 Knapsack Problem
- Count the Reversals
- Tom and Jerry
- Cutted Segments
- Smallest number subset
- Perfect Numbers
- Element appearing once
- Equilibrium point
- Maximize Dot Product
- Max value
- Flip Bits
- Finding the numbers
- Min Number of Flips
- Circle and Lattice Points
- Move all negative elements to end
- String Manipulation
- Chocolate Distribution Problem
- 1[0]1 Pattern Count
- Knapsack with Duplicate Items
- Longest K unique characters substring
- Friends Pairing Problem
- Gold Mine Problem
- Smallest subarray with sum greater than x
- Find Nth root of M
- Find all pairs with a given sum
- Largest zigzag sequence
- Palindromic patitioning
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Evaluation of Postfix Expression
- Rod Cutting
- Two numbers with odd occurrences
- Array Subset of another array
- Count the paths
- First negative integer in every window of size k
- Four Elements
- Paths to reach origin
- Subarray with 0 sum
- Subarrays with given sum
- Sum equals to Sum
- Find Pair Given Difference
- Count all possible paths from top left to bottom right
- Minimum Deletions
- Shortest Common Supersequence
- Happiest Triplet
- Painting the Fence
- Sort by Absolute Difference
- Sub-Array sum divisible by K
- Swapping pairs make sum equal
- Toppers Of Class
- Minimum steps to minimize n as per given condition
- Subset with sum divisible by m
- Count of strings that can be formed using a, b and c under given constraints
- String comparison
- Minimum indexed character
- Stickler Thief
- Maximum Product Cutting
- Maximum sum of subarray less than or equal to x
- Chocolate Station
- Count the triplets
- Pairs which are Divisible by 4
- Maximum distinct elements after removing K elements
- Maximum difference of zeros and ones in binary string
- Find out the Team
- Nearest multiple of 10
- Rearrange an array such that arr[i] = i
- Count pairs Sum in matrices
- Charul and vessels
- Print Bracket Number
- Cutting Binary String
- Save Ironman
- SPP - Palindrome Family
- SP - Beautiful Pairs
- SP - Stack Design
- SP - BST Traversal
- SP - Second Smallest in Range
- Pair with given sum in a sorted array
- Alternating elements
- Weigh the strings
- Adjacent Equal
- Out the Kth
- K Frequent
- Column with Minimum Difference
- Game of Function
- Power of Number
- Index of Left
- K Sum
- Shatter the Cycle
- Sum to Primes
- Student Record
- Check the Brackets
- Transmutation
- Sum Array
- Maximum Integer Value
- Reverse a linked list
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list
- Given a linked list of 0s, 1s and 2s, sort it.
- Rearrange a linked list
- Add 1 to a number represented as linked list
- Merge 2 sorted linked list in reverse order
- Linked List in Zig-Zag fashion
- Remove duplicates from an unsorted linked list
- Sorted insert for circular linked list
- Split a Circular Linked List into two halves
- Reverse a Doubly Linked List
- Right View of Binary Tree
- Mirror Tree
- Two Mirror Trees
- Maximum Width of Tree
- Diameter of Binary Tree
- Check for Balanced Tree
- Heap Sort
- Nth node from end of linked list
- Left View of Binary Tree
- Delete Middle of Linked List
- Merge two sorted linked lists
- Sum Tree
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Queue using two Stacks
- Remove duplicate element from sorted Linked List
- Stack using two queues
- Level order traversal in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- Run Length Encoding
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Print BST elements in given range
- Largest subarray with 0 sum
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Max sum in the configuration
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Sorted subsequence of size 3
- Expression Tree
- Check if Linked List is Palindrome
- Longest Consecutive Subsequence
- Delete a Node in Single Linked List
- Find duplicates in an array
- Count distinct elements in every window
- Check if two strings are k-anagrams or not
- Special Stack
- Sort a stack
- Print Common Nodes in BST
- Level order traversal
- Peak element
- Inorder Successor in BST
- Delete nodes greater than k
- Merge Sort for Linked List
- Union of Two Linked Lists
- Maximum path sum
- Perfect Binary Tree
- Full binary tree
- Triplet with 0 sum in BST
- Symmetric Tree
- Construct Tree from Inorder & Preorder
- Merge Lists Alternatingly
- Vertical sum
- Predecessor and Successor
- Reverse First K elements of Queue
- Height of Spiral Tree
- Sum of Leaf Nodes
- Sum of Right Leaf Nodes
- Sum of Left Leaf Nodes
- Closest Neighbor in BST
- Brothers From Different Roots
- Sum of the Longest Bloodline of a Tree
- Check if two Nodes are Cousins
- Convert To Doubly

- Coin Change
- Kadane's Algorithm
- Find Missing And Repeating
- Complement
- Excel Sheet | Part - 1
- Maximum Sub Array
- Print Diagonally
- Overlapping Intervals
- Maximum Index
- Equal Sum
- Next Permutation
- Longest Increasing Subsequence
- Parenthesis Checker
- Longest Common Subsequence
- Minimum number of jumps
- Count ways to reach the n'th stair
- Count ways to N'th Stair(Order does not matter)
- Egg Dropping Puzzle
- Count of n digit numbers whose sum of digits equals to given sum
- Edit Distance
- nCr
- Maximum Rectangular Area in a Histogram
- Longest Span with same Sum in two Binary arrays
- Consecutive 1's not allowed
- Count of Subarrays
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- Sum of bit differences
- Subset Sum Problem
- Number of Coins
- Stock buy and sell
- Largest Number formed from an Array
- Jumping Numbers
- Longest Palindrome in a String
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Relative Sorting
- Maximum of all subarrays of size k
- Largest square formed in a matrix
- Boolean Matrix Problem
- Sorting Elements of an Array by Frequency
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Minimum Cost of ropes
- Form a palindrome
- Inversion of array
- Preorder to Postorder
- Length of the longest substring
- Smallest number on left
- Longest consecutive subsequence
- Largest subsquare surrounded by ‘X’
- Maximum Sum Path in Two Arrays
- Stock span problem
- Convert an array to reduced form
- Minimum steps to get desired array
- Handshakes
- Tic-Tac-Toe
- Palindromic Array
- Is Binary Number Multiple of 3
- Possible groups
- Subsets with XOR value
- Bleak Numbers
- Nodes at even distance
- Largest number in K swaps
- Special Matrix
- Next larger element
- Taking 1 out of 3 consecutives
- X Total Shapes
- Total Decoding Messages
- Word Break
- Longest Prefix Suffix
- Kth smallest element
- Sum of Subarrays
- Longest Common Substring
- Snake and Ladder Problem
- Trie | (Insert and Search)
- Replace O's with X's
- Find all four sum numbers
- Max absolute difference
- Is Sudoku Valid
- Largest prime factor
- Rearrange characters
- First non-repeating character in a stream
- Stepping Numbers
- K
^{th}largest element in a stream - Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Smallest distinct window
- Infix to Postfix
- Smallest Absolute Difference
- Smallest Positive missing number
- Longest Bitonic subsequence
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Word Wrap
- Perfect Sum Problem
- Longest Path in a matrix
- Rotten Oranges
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- In First But Second
- Mail System Design
- Row with minimum number of 1's
- Count of sum of consecutives
- Matrix Chain Multiplication
- Maximum bitonic subarray sum
- Find the Maximum sum
- Number of subarrays with maximum values in given range
- Longest subarray with sum divisible by K
- Subarrays with equal 1s and 0s
- Longest Sub-Array with Sum K
- The Tiny Miny
- Geek and Strings
- Maximize the sum of selected numbers from an array to make it empty
- Construct binary palindrome by repeated appending and trimming
- SP - Special Subsequences
- SP - Playing with Stacks
- The Game of Digits
- Pattern Matcher
- Ups and Downs
- Pick the one
- Unknown Sort
- Count Students
- One in the Matrix
- Reach top of stair
- Unit Digit
- Optimal Strategy For A Game
- The Game of Digits
- Sorting distance
- Maximum number evaluation
- K
^{th}Maximum element of Max-Heap - Reverse a Linked List in groups of given size.
- Delete nodes having greater value on right
- Quick Sort on Linked List
- Count BST nodes that lie in a given range
- Check for BST
- Tree from Postorder and Inorder
- Bottom View of Binary Tree
- Delete without head pointer
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Connect Nodes at Same Level
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Boundary Traversal of binary tree
- Detect cycle in a directed graph
- Detect cycle in an undirected graph
- Min distance between two given nodes of a Binary Tree
- The Celebrity Problem
- Print a Binary Tree in Vertical Order
- Merge K sorted linked lists
- Find the number of islands
- Circular tour
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree From Linked List
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Largest BST
- Interleaved Strings
- LRU Cache
- Box Stacking
- Multiply two strings
- Minimum Swaps to Sort
- Rat in a Maze Problem
- Bipartite Graph
- Max sum subarray by removing at most one element
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Print Nodes having K leaves
- Duplicate subtree in Binary Tree
- Top View of Binary Tree
- Polynomial Addition
- Merge Sort on Doubly Linked List
- Binary Tree to CDLL
- Find a pair with given target in BST
- Count More than n/k Occurences
- Complete Binary Tree
- Construct expression tree
- K-Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct tree from Inorder and LevelOrder
- Maximum path sum from any node
- Leaves to DLL
- Largest Independent Set Problem
- Right Sibling in Binary Tree
- Duplicate Subtrees
- Construct Tree from Preorder Traversal
- Convert Level Order Traversal to BST
- Count Number of SubTrees having given Sum
- SP - K Sum
- Unit Area of largest region of 1's

- Minimum sum partition
- Maximum of minimum for every window size
- A Simple Fraction
- Largest rectangle of 1’s with swapping of columns allowed
- Longest valid Parentheses
- Word Break - Part 2
- N-Queen Problem
- Solve the Sudoku
- Find median in a stream
- Max Circular Subarray Sum
- Longest Zig-Zag Sub Sequence
- Similar expressions
- Phone directory
- Queries on a Matrix
- SPP - Range Queries
- SP - Jumping the Subtree
- The great one
- Longest Substring
- Santa and Gift
- Add the Triangles
- Increment and Move
- Maximum Simultaneous Difference
- Santa and Gift
- Rotten Oranges
- QuickSort on Doubly Linked List
- Reorder List
- Binary Tree to DLL
- Alien Dictionary
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST
- Number of Turns in Binary Tree
- Merge K sorted linked lists