prateekgupta10
STREAK
144/1467
days
Longest streak/Global longest streak
Organization
Indian Railways
Language Used
C++, Python, Javascript
Coding Score
2160
Problem Solved
685
Contest Rating
-
Campus Mantri
ra2466 points
Contributor
66 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
237 submissions in current year
SCHOOL (2)
BASIC (24)
EASY (246)
MEDIUM (350)
HARD (63)
- Triangle and Square
- M and N
- Satisfy the condition
- Reverse a linked list
- Occurence of an integer in a Linked List
- Linked list of strings forms a palindrome
- Sorted insert for circular linked list
- Delete node in Doubly Linked List
- Inorder Traversal
- Check for BST
- K distance from root
- Mirror Tree
- Delete without head pointer
- Height of Binary Tree
- Middle of a Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- BFS of graph
- Root to leaf path sum
- Square root of a number
- Print all nodes that don't have sibling
- Lowest Common Ancestor in a BST
- Largest subarray of 0's and 1's
- Remove duplicates in array
- Remove every kth node
- Check if all leaves are at same level
- Match specific pattern
- Multiply two linked lists
- Josephus problem
- You and your books
- Max distance between same elements
- Print matrix in diagonal pattern
- Check whether BST contains Dead End
- Find duplicates in an array
- Count distinct elements in every window
- Three way partitioning
- Level order traversal
- Index of an Extra Element
- Split Linked List Alternatingly
- Sum of leaf nodes in BST
- Count More than n/k Occurences
- Symmetric Tree
- Delete Alternate Nodes
- Find the Sum of Last N nodes of the Linked List
- Count Pairs whose sum is equal to X
- Find length of Loop
- Linked List Matrix
- Reverse First K elements of Queue
- Remove Half Nodes
- Closest Neighbour in BST
- Brothers From Different Roots
- Swap the array elements
- Xoring and Clearing
- Reverse an Array
- Max and Second Max
- Rightmost different bit
- Factorial Of Number
- Minimum adjacent difference in a circular array
- Equilibrium Point
- Leaders in an array
- Rotate Array
- Roof Top
- Rotate by 90 degree
- Determinant of a Matrix
- Anagram
- Winner of an election
- Strings Rotations of Each Other
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Minimum indexed character
- Minimum Cost of ropes
- N meetings in one room
- Largest number with given sum
- Count Total Digits in a Number
- Digital Root
- Reach a given score
- Count ways to N'th Stair
- Union of Arrays with Duplicates
- Missing in Array
- Product array puzzle
- Sort 0s, 1s and 2s
- Maximize Array Value After Rearrangement
- Count the elements
- Find the closest number
- Common elements
- Split the Array
- Sorted and Rotated Minimum
- Search in a Row-Column sorted matrix
- Move All Zeroes to End
- Remove all duplicates from a given string
- Count pairs Sum in matrices
- Find Pair Given Difference
- Pairs with difference k
- Swap and Maximize
- Bitonic Point
- Closest Strings
- Single Number
- Alternate positive and negative numbers
- Remaining String
- Kth distance
- Palindrome Sentence
- Remove Duplicates
- Nearest multiple of 10
- Reorganize The Array
- Facing the sun
- Twice Counter
- Max Sum without Adjacents
- Second Largest
- Convert array into Zig-Zag fashion
- Two Sum - Pair with Given Sum
- Number of occurrence
- K-Pangrams
- Does array represent Heap
- Modify the Array
- Sum Pair closest to target
- String's Count
- Longest Common Prefix of Strings
- Longest substring with distinct characters
- Substrings with same first and last characters
- Count pairs with given sum
- Segregate 0s and 1s
- Play With OR
- First element to occur k times
- Palindrome String
- Total count
- Pair with given sum in a sorted array
- Print Bracket Number
- Odd Even Problem
- Binary representation of next number
- Padovan Sequence
- Minimum Operations
- Check if a number is divisible by 8
- Find the Highest number
- Armstrong Numbers
- Reverse Bits
- Max Sum Subarray of size K
- Swap two nibbles in a byte
- Maximum Sum Problem
- Party of Couples
- Maximize dot product
- Shortest path from 1 to n
- Count numbers containing 4
- Trail of ones
- K-Palindrome
- Reach the Nth point
- Minimum Cost To Make Two Strings Identical
- Recamans sequence
- Compare two fractions
- Recursive sequence
- Juggler Sequence
- Game with String
- Summed Matrix
- Row with minimum number of 1's
- Coverage of all Zeros in a Binary Matrix
- Exit Point in a Matrix
- Inorder Traversal and BST
- Print Pattern
- Array to BST
- Sum of dependencies in a graph
- Find maximum volume of a cuboid
- Smallest window containing 0, 1 and 2
- Insert an Element at the Bottom of a Stack
- Sort a k sorted doubly linked list
- Fibonacci series up to Nth term
- Stock Buy and Sell – Max one Transaction Allowed
- Divisor Game
- Find the String
- Find the first node of loop in linked list
- Sorting Items
- Minimise the Distance
- Bridge on Bits
- Max Splits
- Check Anagram Existence
- Virus Infection
- Dominating Geek
- Substrings with same value
- Candy shop I
- Minimum Distance
- Count Indices
- Min Query
- Maximum Distance
- Find Bots on Geeklandster
- Magic Array
- Not a palindromic string
- Find the enemies
- Chocolate Distribution
- Equality
- Minimum Number of Elements
- Jumping Towers
- Character Matrix Conundrum
- XOR GAME
- Check for Consecutive
- Prefix Distinct
- Frequency of every Element
- Geek & Geekina Purchasing Ice Cream
- Maximum average among all subarrays
- Eye's Contact
- Geekland Fair
- Super Palindrome
- Find Mode in BST
- Bob's Impression
- Modify MEX
- Geek Count
- And is Equal to OR
- Two Smallests in Every Subarray
- Split an array into two equal Sum subarrays
- Largest Pair Sum
- First Word
- Geekland Tax Calculator
- Winner Team
- Distribute Balls
- Boundary Sum of Matrix
- Maximum Product
- Two Swaps
- Maximize partitions in a String
- Count pairs with given sum
- Count Pairs whose sum is less than target
- Union of Two Sorted Arrays with Distinct Elements
- Intersection of Two arrays with Duplicate Elements
- Find All Triplets with Zero Sum
- Search in a row-wise sorted matrix
- Find Only Repetitive Element from 1 to n-1
- Seating Arrangement
- Bitwise Operations
- Minimum Jumps
- Can Transform ?
- Array Balancing Cost
- Weak Subarrays
- Good Array
- Remove Segments
- Number Difference
- Minimum Steps to Target Coordinate
- Absolute Difference Array
- Count the complement pairs
- Maximum Rectangle Score
- Minimum Cost to buy Candies
- Lexicographically Smallest String Cost
- Unique Number I
- Maximum Value
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- 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
- Construct Binary Tree from Inorder and Postorder
- Bottom View of Binary Tree
- Intersection Point in Y Shaped Linked Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Sum Tree
- Construct Binary Tree from Parent Array
- Tree Boundary Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- Min distance between two given nodes of a Binary Tree
- Max sum path in two arrays
- The Celebrity Problem
- Topological sort
- 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
- Make Binary Tree From Linked List
- Toeplitz matrix
- Kth element in Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Distinct occurrences
- Additive sequence
- Largest BST
- Sorted subsequence of size 3
- Multiply two strings
- Implement Atoi
- Maximum Difference
- Palindrome Linked List
- Rat in a Maze Problem - I
- Merge two BST 's
- Root to leaf paths sum
- Bridge edge in a graph
- k-th Smallest in BST
- Peak element
- Euler Circuit in an Undirected Graph
- Euler circuit and Path
- Merge Sort on Doubly Linked List
- Ancestors in Binary Tree
- Pair Sum in BST
- Root to Leaf Paths
- Populate Inorder Successor for all nodes
- XOR Linked List
- Counting elements in two arrays
- Linked List that is Sorted Alternatingly
- K Sum Paths
- Construct Tree from Inorder & Preorder
- Arrange Consonants and Vowels
- Count the nodes at distance K from leaf
- Vertical sum
- Insert in Sorted way in a Sorted DLL
- Maximum path sum from any node
- Predecessor and Successor
- Check for Children Sum Property in a Binary Tree
- Diagonal sum in binary tree
- Deletion and Reverse in Circular Linked List
- Duplicate Subtrees
- Sum of nodes on the longest path
- ZigZag Tree Traversal
- Vertical Width of a Binary Tree
- Maximum sum of Non-adjacent nodes
- Gray to Binary equivalent
- Tower Of Hanoi
- Smallest Positive Missing
- Maximum occured integer
- Rotate and delete
- Maximum Index
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Union of Two Sorted Arrays
- Indexes of Subarray Sum
- Count the number of possible triangles
- Number of pairs
- Make Matrix Beautiful
- Spirally traversing a matrix
- Search in a sorted Matrix
- Subarray with 0 sum
- Subarray range with given sum
- Sorting Elements of an Array by Frequency
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Evaluation of Postfix Expression
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Nearly sorted
- Activity Selection
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Largest number in K swaps
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Ways to Reach the n'th Stair
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Allocate Minimum Pages
- Kth Smallest
- Implement Trie
- Nth catalan number
- Rotten Oranges
- Maximize The Cut Segments
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Closest Three Sum
- Word Break
- Word Search
- Sort an array of 0s, 1s and 2s
- Paths to reach origin
- Missing And Repeating
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Sum of Subarrays
- Top k numbers in a stream
- Longest Span in two Binary Arrays
- Sum of Middle elements of two sorted arrays
- Consecutive 1's not allowed
- Pythagorean Triplet
- Search in Rotated Sorted Array
- Sum of bit differences
- Max Score from Subarray Mins
- Largest Number formed from an Array
- Add Binary Strings
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Sort the given array after applying the given equation
- Row with max 1s
- Swapping pairs make sum equal
- Check if frequencies can be equal
- Substrings with K Distinct
- Palindrome SubStrings
- Form a palindrome
- Nuts and Bolts Problem
- Longest Subarray with Sum K
- Cutting Binary String
- Search Pattern (KMP-Algorithm)
- Shuffle integers
- Find the N-th character
- k largest elements
- Find missing in second array
- Longest Common Substring
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- K-th element of two Arrays
- K closest elements
- Missing element of AP
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Equalize the Towers
- Minimum sum
- Not a subset sum
- Minimize the Heights II
- Transform to prime
- Minimum Deletions
- Print N-bit binary numbers having more 1s than 0s
- Nine Divisors
- Permutations of a String
- Sum of Products
- Unique Number II
- Modular Exponentiation for large numbers
- Game of XOR
- Maximum Tip Calculator
- Modified Game of Nim
- Minimum number of deletions and insertions
- Minimum cost to fill given weight in a bag
- Coin Change (Count Ways)
- Sequence of Sequence
- String Subsequence
- Mobile numeric keypad
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Dice throw
- Smallest number
- Longest subsequence-1
- Power Set
- Count ways to N'th Stair(Order does not matter)
- nCr
- Geek and its Game of Coins
- Minimum steps to destination
- Partition Equal Subset Sum
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Prime Pair with Target Sum
- Nth Natural Number
- LCM Triplet
- Smith Number
- Next Permutation
- Maximum sum of hour glass
- How Many X's?
- Power of k in factorial of n
- Longest alternating subsequence
- Left Rotate Matrix K times
- Decode the string
- Total Decoding Messages
- Check If two Line segments Intersect
- Print leaf nodes from preorder traversal of BST
- Number of Rectangles in a Circle
- Largest square formed in a matrix
- Integral Points Inside Triangle
- Count all Possible Path
- Count the paths
- Floyd Warshall
- Flood fill Algorithm
- Techfest and the Queue
- Largest subsquare surrounded by X
- Divisibility tree
- Police and Thieves
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- All Palindromic Partitions
- Bellman-Ford
- Subarrays with sum K
- Coin Piles
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Clone a stack without using extra space
- Maximum XOR of two numbers in an array
- Construct list using given q XOR queries
- Find duplicate rows in a binary matrix
- Maximum sum of elements not part of LIS
- Find rectangle with corners as 1
- Paths from root with a specified sum
- Shortest Prime Path
- Insertion Sort for Singly Linked List
- Remove all occurences of duplicates in a linked list
- Minimize the Heights I
- Anti Diagonal Traversal of Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Min Cost Climbing Stairs
- Overlapping Intervals
- Buy and Sell a Share at most twice
- Maximum product subset of an array
- K-th Largest Sum Contiguous Subarray
- Maximum Meetings in One Room
- Buy Maximum Stocks if i stocks can be bought on i-th day
- Find shortest safe route in a matrix
- Check if a given graph is tree or not
- Next element with greater frequency
- City With the Smallest Number of Neighbors at a Threshold Distance
- Path With Minimum Effort
- Shortest path in Undirected Graph
- Majority Element II
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Sum of subarray minimum
- Minimal Cost
- Smallest Divisor
- Combination Sum II
- Shortest Path in Weighted undirected graph
- Minimum Absolute Difference In BST
- Maximum Sum Combination
- Non-overlapping Intervals
- Stickler Thief II
- Insert Interval
- Longest String Chain
- Partitions with Given Difference
- Largest Divisible Subset
- Make array elements unique
- Next Greater Element in Circular Array
- Find the longest string
- Minimum repeat to make substring
- Prime List
- Water the plants
- Unique Paths in a Grid
- Number of Good Components
- Remove the balls
- Powerful Integer
- GSB Interview
- Sort last M elements
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Maximum Bridges
- Minimize the Array
- Pairs violating the BST property
- Kth common ancestor in BST
- For You
- Maximum Points
- Beautiful cities - I
- Height of Tower
- Geek's birthday party - II
- Maximum Doublet XOR
- Geek Count
- Strong Indices
- String Replacement
- Traffic Lights
- Count Valid Pairs
- Max Difference Cool Prime
- Min Size of Array
- Sum Equals Length
- Maximum Value
- Exotic Subsequences
- Kth Missing Positive Number in a Sorted Array
- Count Subarrays with given XOR
- Set Matrix Zeros
- Minimum cost to connect all houses in a city
- Meeting Rooms
- Split array in three equal sum subarrays
- Last Moment Before All Ants Fall Out
- Search in an almost Sorted Array
- Find H-Index
- Longest Subarray with Majority Greater than K
- Count all triplets with given sum in sorted array
- Balancing Consonants and Vowels Ratio
- Convert String
- Implement Pow
- Subarrays With At Most K Distinct Integers
- K Closest Points to Origin
- Who Were Online?
- Longest Palindromic Array
- Longest Bounded-Difference Subarray
- Minimize SubArray Sum
- Possible Value of X
- Divisible by 13
- Lexicographically Largest String After K Deletions
- Group Balls by Sequence
- Count Unique Vowel Strings
- Count Numbers Containing Specific Digits
- ASCII Range Sum
- 2D Difference Array
- Difference Check
- Count Linked List Nodes
- Replace all 0's with 5
- Third largest element
- Peak element
- Minimum element in BST
- Is Linked List Length Even?
- Identical Linked Lists
- Triplet Family
- Who has the majority?
- Strongest Neighbour
- Array insert at index
- Array insert at end
- Reversing an Array
- Reverse array in groups
- Search an Element in an array
- Searching an element in a sorted array
- Sum of Digits of a Number
- Power Using Recursion
- Fibonacci Using Recursion
- Alternative Sorting
- Who has the majority?
- Geekland Elections
- Valid Triangle
- Maximize Expression
- Linked List Group Reverse
- Binary Tree to DLL
- Clone List with Next and Random
- Wildcard Pattern Matching
- Subtraction in Linked List
- LRU Cache
- Alien Dictionary
- Smallest range in K lists
- Fixing Two nodes of a BST
- Max Path Sum 2 Special Nodes
- Trapping Rain Water
- Max Circular Subarray Sum
- Merge Without Extra Space
- Smallest window in a string containing all the characters of another string
- Histogram Max Rectangular Area
- Maximum of minimum for every window size
- Find median in a stream
- Solve the Sudoku
- Minimum Cost Path
- Stock Buy and Sell – Multiple Transaction Allowed
- Burning Tree
- Count Pairs in an Array
- Count Smaller elements
- Longest Prefix Suffix
- Wildcard string matching
- Circle of strings
- Longest repeating and non-overlapping substring
- Sum-string
- Sub-arrays with equal number of occurences
- Edit Distance
- Minimum Points To Reach Destination
- Stock Buy and Sell – Max K Transactions Allowed
- Matrix Chain Multiplication
- Strictly Increasing Array
- The Palindrome Pattern
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Possible Paths in a Tree
- N-Queen Problem
- Brackets in Matrix Chain Multiplication
- Rohan's Love for Matrix
- Articulation Point - II
- Maximum sum Rectangle
- Find all Critical Connections in the Graph
- Distribute candies in a binary tree
- Split Array Largest Sum
- Kth Smallest Number in Multiplication Table
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Vertex Cover
- Maximum Connected group
- Minimize Max Distance to Gas Station
- Candy
- Account Merge
- Max min Height
- Geekina Hate 1s
- Geekland Is Haunted
- Bigger Sum Find
- Meeting Rooms III
- Minimum Weight Cycle
- Count the Coprimes
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