- Reverse an Array
- Frequency of Array Elements
- Maximum Occuring Character
- Palindrome String
- LCM And GCD
- Power of 2
- Sort The Array
- Binary number to decimal number
- Sort a String
- Print the Kth Digit
- Count possible triangles
- Dice throw
- Rotate Array by n elements
- Permutations of a given string
- Rearrange Array Alternately
- Missing number in array
- Array of alternate +ve and -ve no.s
- Swap two nibbles in a byte
- Maximum product of two numbers
- Remove Spaces
- Value equal to index value
- Number of paths
- Boolean Matrix Problem
- Count total set bits
- Bit Difference
- Count numbers containing 4
- Reverse sub array
- Count zero
- Sum of distinct elements
- Max Sum without Adjacents
- Swap kth elements
- Union of two arrays
- Remove character
- Ugly Numbers
- Number of occurrence
- k largest elements
- Pairs of prime number
- Leaders in an array
- Find position of set bit
- Sum of Digits Divisibility
- Possible groups
- Absolute distinct count
- Shortest direction
- Count the numbers
- Find the Odd Occurence
- Keypad typing
- Generate binary string
- Total count
- Surpasser Count
- Minimize string value
- Rotate by 90 degree
- Good String
- Set Bits
- Subset Sums
- Chocolate Distribution Problem
- String with numbers at its end
- Interesting Patterns
- Replace the Bit
- Squares in a Matrix
- Find first and last occurrence of x
- Type of array
- Sum of dependencies in a graph
- Sort in specific order
- Check if two arrays are equal or not
- Check if divisible by 11
- Unique Numbers
- XOR of all elements
- Substrings with similar first and last characters
- Find first set bit
- Check for subsequence
- Check if the door is open or closed
- Find first repeated character
- Geek and Coffee Shop
- Index of first 1 in a sorted array of 0’s and 1’s
- Does array represent Heap
- Missing number in shuffled array
- Thief trying to escape
- Largest Fibonacci Subsequence
- Last index of One
- Arranging the array
- Common elements
- First element to occur k times
- Fill array with 1's
- Length of Last word
- Remove Duplicates from unsorted array
- Uncommon characters
- Minimum sum of two elements from two arrays
- Count of smaller elements
- Four Elements
- URLify a given string
- Reverse a string with spaces intact
- Count the elements
- Sum Terms Nth Row
- Balance with respect to an array
- Pair array product sum
- Pair cube count
- Equivalent Sub-Arrays
- Evaluate the expression
- Count pair sum
- First Come First Serve
- Friendly Array
- Max Odd Sum
- Largest Permutation
- Swap and Maximize
- Minimum Difference among K
- Longest Equal Prefix
- Line passing through 2 points
- Sort the Half Sorted
- Partition Point in the Array
- Fibonacci in the array
- Alternative Sorting
- Rightmost different bit
- Count numbers divisible by M
- Max value after m range operation
- Check set bits
- Set kth bit
- Sorting Employees
- Count Pairs Odd Xor
- Toppers Of Class
- Make a Palindrome
- Quick Left Rotation
- Bitonic Generator Sort
- Difficulty of sentence
- Toggle bits given range
- Stable Sort and Position
- Twice counter
- Shuffle integers
- Longest Common Prefix in an Array
- Elements in the Range
- Remaining String
- In First But Second
- Distinct Adjacent Element
- Min value of x
- First K natural numbers
- Sum of distinct elements for a limited range
- Count triplets with sum smaller than X
- Maximum number of zeroes
- Odd to Even
- Minimum number of flipped bits
- Total number of Strings
- Print Linked List elements
- Count nodes of linked list
- Node at a given index in linked list
- Delete node in Doubly Linked List
- Size of Binary Tree
- Inorder Traversal
- Count Leaves in Binary Tree
- Merge Sort
- Quick Sort
- Mirror Tree
- Two Mirror Trees
- Height of Binary Tree
- Heap Sort
- Finding middle element in a linked list
- Circular Linked List
- Sum Tree
- Postorder Traversal
- Implement Stack using Linked List
- Implement stack using array
- Implement Queue using Linked List
- Implement Queue using array
- Square root
- Print all nodes that don’t have sibling
- Insert a node in Doubly linked list
- Run Length Encoding
- Remove duplicate elements from sorted Array
- Replace all 0's with 5
- Equilibrium index of an array
- Convert to Roman No
- Preorder Traversal
- Search a node in BST
- Implement Atoi
- Repetition of k length substring
- Find Number of Numbers
- Minimum distance between two numbers
- Multiply Matrices
- Count distinct elements in every window
- Find triplets with zero sum
- Linked List Insertion
- Operating a sorted array
- Insert in a Sorted List
- Play with an array
- Ancestors in Binary Tree
- Root to Leaf Paths
- Anagram of String
- Circular Linked List Traversal
- Linked List Length Even or Odd?
- Delete Alternate Nodes
- Identical Linked Lists
- Merge Lists Alternatingly
- Find the Sum of Last N nodes of the Linked List

Name

Jasleen Kaur

Institution

Netaji Subhas Institute of Technology

Coding Score

2012

Subjective Score

0

Problems Solved

917

Total Submissions

2291

Overall Rank: 3

Monthly Rank: 191426

Weekly Rank: 125322

- Anagram
- Adding One
- Pascal Triangle
- Pattern Searching
- Print Pattern
- Rotation
- Search in a Rotated Array
- Parenthesis Checker
- Merge Two Sorted Arrays
- Consecutive elements
- Large Factorial
- Maximize Number of 1's
- Non Repeating Character
- GCD of Array
- Distinct Substrings
- Sum of Middle Elements of two sorted arrays
- Good Pairs
- First Repeating Element
- Count Occurences of Anagrams
- Reverse words in a given string
- Pythagorean Triplet
- Isomorphic Strings
- Count Substrings
- Check if a given string is a rotation of a palindrome
- Move all zeroes to end of array
- Remove all duplicates from a given string
- Activity Selection
- Remove “b” and “ac” from a given string
- Doubling the value
- Majority Element
- Equal Sum and Product
- Spirally traversing a matrix
- Sort an array of 0s, 1s and 2s
- Pairs with difference k
- Amend The Sentence
- Subset Sum Problem
- Two numbers with sum closest to zero
- Number of Coins
- Finding Number
- Stock buy and sell
- Maximum value in a bitonic array
- Number of paths in a matrix with k coins
- Next greater number set digits
- Possible words from Phone digits
- Finding Position
- Jumping Numbers
- Amount of Water
- Single Number
- Segregate even and odd nodes in a Linked List
- Does robot moves circular
- Element that appears once where every element occurs twice
- Longest Distinct characters in string
- Count distinct pairs with difference k
- Replace by X
- Is Square
- Column name from a given column number
- Maximum Product Subarray
- N meetings in one room
- Maximum of all subarrays of size k
- Remove Duplicates
- Row with max 1s
- Kth distance
- Addition of submatrix
- Segregate Even and Odd numbers
- Maximum sum increasing subsequence
- Array to BST
- Sum of two numbers represented as arrays
- Facing the sun
- Greater on right side
- Convert array into Zig-Zag fashion
- Key Pair
- Inversion of array
- Maximum Difference
- Add Binary Strings
- Product array puzzle
- Length Unsorted Subarray
- Reverse Bits
- Count Smaller elements
- Lucky Number
- Reach the Nth point
- Subarray with given sum
- Adjacents are not allowed
- Maximum repeating number
- Stock span problem
- Overlapping Substrings
- Max rope cutting
- Count number of hops
- Count pairs with given sum
- Inorder Traversal and BST
- Mapped String
- Minimum Value Assigned
- Copy Set Bits in Range
- Comment Removal
- Two Repeated Elements
- Three Great Candidates
- K closest elements
- Reach a given score
- Number of pairs
- Minimum element in a sorted and rotated array
- Search in a matrix
- Maximum Collatz sequence length
- K-Pangrams
- Check If two Line segments Intersect
- Sub-Array Pairs
- Pick values
- Missing element of AP
- Count the Zeros
- Distinct absolute array elements
- 0 - 1 Knapsack Problem
- Longest Common Increasing Subsequence
- Pangram Checking
- Pangram Strings
- Find the number of sub-arrays having even sum
- Skip the work
- Valid Substring
- Count the Reversals
- Last Match
- Special array reversal
- Maximum value K
- Extract the Number from the String
- Cutted Segments
- Number of distinct subsequences
- Maximum average subarray
- Next larger element
- Permutation divisibility
- Perfect Numbers
- Ordering of strings
- Count number of substrings
- Crack the series
- Maximum value
- Permutation with Spaces
- Element appearing once
- Equilibrium point
- Floor in a Sorted Array
- Buildings receiving sunlight
- Finding Profession
- RegEx matching
- Maximize Dot Product
- Max value
- Letter Writer
- Finding the numbers
- Optimal walk
- Count Increasing Subsequences
- Equal 0, 1 and 2
- Adding Ones
- Min Number of Flips
- Lucas Number
- Pairs with specific difference
- Count Pairs in an Array
- Minimum Steps
- Help Nobita
- Maximum 0’s between two immediate 1’s
- Binary Tree K level sum
- Recursively remove all adjacent duplicates
- Exit Point in a Matrix
- Reverse each word in a given string
- Maximum Sum Bitonic Subsequence
- 1[0]1 Pattern Count
- Knapsack with Duplicate Items
- Last non-zero digit in factorial
- Flood fill Algorithm
- Tom and String
- Pair with greatest product in array
- Longest K unique characters substring
- Roman Number to Integer
- Maximum no of 1's row
- Friends Pairing Problem
- Decode the string
- Next Greater Even Number
- Gold Mine Problem
- Smallest subarray with sum greater than x
- Find Nth root of M
- Find largest word in dictionary
- Minimum Operations
- Equal point in a string of brackets
- Find all pairs with a given sum
- Check if frequencies can be equal
- Shortest distance in infinite tree
- Largest zigzag sequence
- Palindromic patitioning
- Meta Strings
- Check if palindromic ignoring spaces
- Temple Offerings
- Matrix Game - 1
- Jon and string
- Find the element that appears once in sorted array
- Zero Sum Subarrays
- Smallest window in a string containing all the characters of another string
- Find the string in grid
- Increasing Sub Sequence
- Longest Palindromic Subsequence
- K-th element of two sorted Arrays
- Rod Cutting
- Decreasing Sequence
- Infix to Postfix
- Check whether K-th bit is set or not
- Element with left side smaller and right side greater
- Two numbers with odd occurrences
- Transitive closure of a Graph
- Array Subset of another array
- Smallest Positive missing number
- Divisible by 5 or not-1
- Longest Bitonic subsequence
- First negative integer in every window of size k
- Unique substrings
- Mobile numeric keypad
- Merge two binary Max heaps
- Extract Maximum
- Sum of product of all pairs
- Game with String
- Sort the pile of cards
- Sum of numbers in string
- Find the highest occurring digit in prime numbers in a range
- Paths to reach origin
- Print first letter of every word in the string
- Maximum Sum LCM
- Subarray with 0 sum
- Get Minimum Squares
- Rotate matrix elements clockwise
- Combine the strings
- Max Circular Subarray Sum
- Nth catalan number
- Count number of words
- Group Anagrams Together
- Number of divisors in a given range
- Sum equals to Sum
- Wildcard string matching
- Sorted matrix
- Carry counter
- Determinant of a Matrix
- Top k numbers in a stream
- Second most repeated string in a sequence
- Equalize an array in minimum operations
- Reverse vowels in a given string
- Count all possible paths from top left to bottom right
- k modulus array element
- Shortest Common Supersequence
- Sort the given array after applying the given equation
- k sorted array
- LIS in circular manner
- Circular tour
- Assign Mice Holes
- Firing employees
- Greedy Fox
- Happiest Triplet
- Mr Modulo and Pairs
- Painting the Fence
- Rearrange a string
- Minimum Number in a sorted rotated array
- Find distinct elements
- Sum of length
- Sort by Absolute Difference
- Euler Totient Function
- Divisibility by 999
- Bird and maximum fruit gathering
- Sub-Array sum divisible by K
- Corners of a Rectangle
- Rotten Oranges
- Number of Groups
- Ticket sellers
- Minimum Toogles to partition
- Primes sum
- Fibonacci Expression
- Swapping pairs make sum equal
- Number and the Digit Sum
- Decode It
- Sum of K Primes
- String Ignorance
- First Digit of Product of Numbers
- Count the number of ways to tile the floor of size n x m using 1 x m size tiles
- Break a number
- Minimum insertions to sort an array
- Minimum number of deletions and insertions.
- Minimum number of deletions to make a sorted sequence
- Minimum steps to delete a string
- Minimum steps to minimize n as per given condition
- Minimum number of deletions.
- Closest Strings
- Replace a word
- Longest alternating subsequence
- Subset with sum divisible by m
- Modify array to maximize sum of adjacent differences
- Count ways to increase LCS length of two strings by one
- Count of strings that can be formed using a, b and c under given constraints
- Nth item through sum
- Total digits
- Shortest Uncommon Subsequence
- Broken blocks
- Sum of Divisors in an array
- Find length of longest subsequence
- Ways to write n as sum
- LCS of three strings
- Find all distinct subset (or subsequence) sums
- Longest subsequence-1
- Sum of average of all subsets
- Maximum sum Problem
- Number of permutation with K inversions
- Longest repeating and non-overlapping substring
- Count digit groupings of a number
- String comparison
- Minimum indexed character
- Find number of times a string occurs as a subsequence
- Minimum Cost To Make Two Strings Identical
- Printing Maximum Sum Increasing Subsequence
- Consecutive Array Elements
- High-effort vs. Low-effort
- Minimum cost to fill given weight in a bag
- Longest Repeating Subsequence
- Stickler Thief
- Bell Numbers
- Minimum Swaps for Bracket Balancing
- Longest Zig-Zag Sub Sequence
- k-th smallest number using digits of a given number
- Even and odd elements at even and odd positions
- Geek and its Colored Strings
- Transform the array
- Reverse a linked list
- Occurence of an integer in a Linked List
- Delete N nodes after M nodes of a linked list
- Rotate a Linked List
- Pairwise swap elements of a linked list by swapping data
- Given a linked list of 0s, 1s and 2s, sort it.
- Add two numbers represented by linked lists
- Rearrange a linked list
- Add 1 to a number represented as linked list
- Compare two linked lists
- Merge 2 sorted linked list in reverse order
- Linked List in Zig-Zag fashion
- Detect Loop in linked list
- 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
- Insertion Sort
- Right View of Binary Tree
- K distance from root
- Maximum Width of Tree
- Delete without head pointer
- Diameter of Binary Tree
- Check for Balanced Tree
- n'th node from end of linked list
- Left View of Binary Tree
- Delete Middle of Linked List
- Merge two sorted linked lists
- Decimal Equivalent of Binary Linked List
- Transform to Sum Tree
- Intersection of two sorted Linked lists
- Find Transition Point
- 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
- Depth First Traversal for a Graph
- Boundary Traversal of binary tree
- Reverse alternate levels of a perfect binary tree
- Insert a node in a BST
- BFS traversal of graph
- Lowest Common Ancestor in a Binary Tree
- Determine if Two Trees are Identical
- Root to leaf path sum
- Postorder traversal from given Inorder and Preorder traversals
- Absolute List Sorting
- Lowest Common Ancestor in a BST
- Implement two stacks in an array
- Max sum path in two arrays
- Largest subarray of 0's and 1's
- Level order traversal Line by Line
- Print BST elements in given range
- The Celebrity Problem
- Largest subarray with 0 sum
- Print a Binary Tree in Vertical Order
- Minimum Depth of a Binary Tree
- Odd even level difference
- Binary Tree to BST
- K-Palindrome
- Find nth element of spiral matrix
- Max sum in the configuration
- Get minimum element from stack
- Unique rows in boolean matrix
- Serialize and Deserialize a Binary Tree
- Remove every k'th node
- Leaf at same level
- Is Binary Tree Heap
- Match specific pattern
- Validate an IP Address
- Find Maximum value
- Multiply two linked lists
- Distinct occurrences
- Sorted subsequence of size 3
- Josephus problem
- You and your books
- Expression Tree
- Check if Linked List is Palindrome
- Max distance between same elements
- Print matrix in diagonal pattern
- Find perimeter of shapes
- Generate Grey Code Sequences
- Check whether BST contains Dead End
- Delete a Node in Single Linked List
- Kth largest element in BST
- Find duplicates in an array
- Minimum four sum subsequence
- Check if two strings are k-anagrams or not
- Max Level Sum in Binary Tree
- Special Stack
- Root to leaf paths sum
- Three way partitioning
- Print Nodes having K leaves
- Sort a stack
- String Modification
- Longest consecutive sequence in Binary tree
- Print Common Nodes in BST
- Peak element
- Delete nodes greater than k
- Index Of an Extra Element
- Merge Sort for Linked List
- Sum of given range
- Convert Ternary Expression to Binary Tree
- Maximum Bipartite Matching
- Union of Two Linked Lists
- Intersection of Two Linked Lists
- Split Singly Linked List Alternatingly
- Level of a Node in Binary Tree
- Sum of leaf nodes in BST
- Maximum path sum
- Counting Sort
- Max and min element in Binary Tree
- Perfect Binary Tree
- XOR Linked List
- Counting elements in two arrays
- Sum of digits in factorial of a number
- Reverse a string using Stack
- Linked List that is Sorted Alternatingly
- XOR of a given range
- Full binary tree
- Modify Linked List-1
- Triplet with 0 sum in BST
- Symmetric Tree
- Construct BST from Postorder
- Arrange Consonants and Vowels
- Vertical sum
- Next Right Node
- Count Pairs whose sum is equal to X
- Insert in Sorted way in a Sorted DLL
- Check if Tree is Isomorphic
- Depth of node
- pth common ancestor in BST
- Predecessor and Successor
- Leaves to DLL
- Maximum Node Level
- Children Sum Parent
- Diagonal Sum In Binary Tree
- Find length of Loop
- Deletion and Reverse in Linked List
- K-Nearest Neighbours

- Coin Change
- Kadane's Algorithm
- Complement
- Number of Unique Paths
- Excel Sheet | Part - 1
- Maximum Sub Array
- Wave Array
- Overlapping Intervals
- Equal Sum
- Binary String
- Next Permutation
- Longest Increasing Subsequence
- Arithmetic Progression
- 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
- Min Coin
- Consecutive 1's not allowed
- Next Smallest Palindrome
- Count of Subarrays
- Longest Even Length Substring
- Path in Matrix
- Trapping Rain Water
- String formation from substring
- Case-specific Sorting of Strings
- Sum of bit differences
- Maximize The Array
- Factorials of large numbers
- Minimum Platforms
- Number following a pattern
- Longest Palindrome in a String
- Modular Exponentiation for large numbers
- Concatenation of Zig-Zag String in ‘n’ Rows
- Sum of Query I
- Relative Sorting
- Remove minimum elements
- Largest square formed in a matrix
- Design a tiny URL or URL shortener
- Nuts and Bolts Problem
- Rotate a 2D array without using extra space
- Special Keyboard
- Number of ways
- Minimum Cost of ropes
- Sum of Query II
- Form a palindrome
- Preorder to Postorder
- Maximum length Bitonic Subarray
- Length of the longest substring
- Longest consecutive subsequence
- Largest subsquare surrounded by ‘X’
- Convert an array to reduced form
- Minimum steps to get desired array
- Subsequence matching
- Handshakes
- Tic-Tac-Toe
- Number to words
- Betting game
- Unique partitions
- Is Binary Number Multiple of 3
- Maximum Sum Subsequence of length k
- Preorder Traversal and BST
- Search Pattern
- Longest Arithmetic Progression
- Triplet Sum in Array
- Subsets with XOR value
- Palindromic Strings
- Max possible amount
- Bleak Numbers
- Satisfy the equation
- Maximum Profit
- Circle of strings
- Nodes at even distance
- Build the smallest
- Largest number in K swaps
- Special Matrix
- Minimize the heights
- Taking 1 out of 3 consecutives
- Total Decoding Messages
- Unique BST's
- Distinct Transformations
- Subsets
- Combination Sum
- Combination Sum - Part 2
- Word Break
- Longest Prefix Suffix
- K’th smallest element
- Divisible by 8
- Transform String
- Maximum calorie
- Count Palindrome Sub-Strings of a String
- Check if a string is repetition of its substring of k-length
- Negative weight cycle[test cases to be corrected]
- Hamiltonian Path
- Minimums in Array
- Snake and Ladder Problem
- Shortest Source to Destination Path
- Trie | (Insert and Search)
- Replace O's with X's
- Knight Walk
- Find all four sum numbers
- Word Boggle
- Form coils in a matrix
- Max absolute difference
- Print leaf nodes from preorder traversal of BST
- Is Sudoku Valid
- Find whether path exist
- Check Mirror in N-ary tree
- Length of largest region of 1's
- Rearrange characters
- First non-repeating character in a stream
- Count subsequences of type a^i b^j c^k
- Stepping Numbers
- Convex Hull
- Matrix Exponentiation
- Kth largest element in a stream
- Magnet Array Problem
- Smallest distinct window
- Minimum number of steps to reach a given number.
- Floyd Warshall
- Huffman Encoding
- Nearly Sorted Algorithm
- Optimal binary search tree
- Smallest Absolute Difference
- Geek collects the balls
- Largest Sum Subarray of Size at least K
- Pyramid form
- Maximum sum Rectangle
- Maximum Intervals Overlap
- Perfect Sum Problem
- Longest Path in a matrix
- Array Pair Sum Divisibility Problem
- Job Sequencing Problem
- Cows of FooLand
- Number of palindromic strings
- Page Faults in LRU
- Count possible ways to construct buildings
- Min cut Square
- Image Multiplication
- N Digit numbers with digits in increasing order
- Mila and strings
- Prime factorization and geek number
- Sisters and coins
- Probability of Knight
- Two water Jug problem
- CamelCase Pattern Matching
- Steps by Knight
- Median In a Row-Wise sorted Matrix
- Given a linked list, reverse alternate nodes and append at the end
- Reverse a Linked List in groups of given size.
- Delete nodes having greater value on right
- Count BST nodes that lie in a given range
- Check for BST
- Bottom View of Binary Tree
- Intersection Point in Y Shapped Linked Lists
- Add all greater values to every node in a BST
- Construct Binary Tree from Parent Array
- Connect Nodes at Same Level
- Clone a linked list with next and random pointer
- Flattening a Linked List
- Diagonal Traversal of Binary Tree
- Delete a node from BST
- Detect cycle in a directed graph
- Detect cycle in an undirected graph
- Min distance between two given nodes of a Binary Tree
- Maximum difference between node and its ancestor
- Range Minimum Query
- Operations on Binary Min Heap
- Topological sort
- Merge K sorted linked lists
- Find the number of islands
- Circular tour
- Wildcard Pattern Matching
- Max rectangle
- Make Binary Tree
- Generate IP Addresses
- Check if subtree
- Extreme nodes in alternate order
- Kth element in Matrix
- Clone a Binary Tree
- Remove loop in Linked List
- Implementing Dijkstra | Set 1 (Adjacency Matrix)
- Max length chain
- Minimum Spanning Tree
- Additive sequence
- Interleaved Strings
- Box Stacking
- Count Palindromic Subsequences
- Multiply two strings
- Minimum Swaps
- Count of distinct substrings
- Strongly Connected Components (Kosaraju's Algo)
- Longest Consecutive Subsequence
- Rat in a Maze Problem
- Bipartite Graph
- Max sum subarray by removing at most one element
- Maximum subset XOR
- Number of root to leaf paths
- Find the Closest Element in BST
- Pots of Gold Game
- Delete keys in a Linked list
- Merge two BST 's
- Merge k Sorted Arrays
- Length of longest palindrome in linked list
- Bridge Edge in Graph
- Find the missing no in string
- Top View of Binary Tree
- Smallest range in K lists
- k-th smallest element in BST
- Polynomial Addition
- Inorder Successor in BST
- Euler Circuit in a Directed Graph
- Euler circuit and Path
- Merge Sort on Doubly Linked List
- Binary Tree to CDLL
- Find a pair with given target in BST
- Count Element Occurences
- Occurences of 2 as a digit
- Complete Binary Tree
- Populate Inorder Successor for all nodes
- Construct expression tree
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Construct tree from Inorder and LevelOrder
- Node at distance
- Mirror of a given node
- Pairs violating BST property
- Maximum path sum from any node
- Largest Independent Set Problem

- Maximum Index
- Maximum of minimum for every window size
- Head to Tail ordering
- Find Prime numbers in a range
- Largest Number formed from an Array
- Find sum of different corresponding bits for all pairs
- Return two prime numbers
- Allocate minimum number of pages
- Sorting Elements of an Array by Frequency
- X Total Shapes
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - Part 2
- Print all LCS sequences
- Minimum Cost Path
- N-Queen Problem
- Solve the Sudoku
- Generalised Fibonacci numbers
- Find median in a stream
- Travelling Salesman Problem
- Distinct palindromic substrings
- QuickSort on Doubly Linked List
- Reorder List
- Binary Tree to DLL
- Tree from Postorder and Inorder
- LRU Cache
- AVL Tree Insertion
- Longest Palindromic Substring in Linear Time
- Nodes at given distance in binary tree
- Fixing Two nodes of a BST