R
rajat_singh
STREAK
93/1472
days
Longest streak/Global longest streak
Language Used
Java, Python
Coding Score
1126
Problem Solved
338
Contest Rating
__
97 points
Contributor
97 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
162 submissions in current year
SCHOOL (0)
BASIC (18)
EASY (111)
MEDIUM (188)
HARD (21)
- Sort a linked list of 0s, 1s and 2s
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Insert in Sorted Circular Linked List
- Count BST nodes that lie in a given range
- Bottom View of Binary Tree
- Intersection in Y Shaped Lists
- Merge two sorted linked lists
- Sum Tree
- Connect Nodes of Levels
- Flattening a Linked List
- Cycle in a Directed Graph
- Undirected Graph Cycle
- LCA in Binary Tree
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Vertical Tree Traversal
- Find the number of islands
- Max sum in the configuration
- Get Min from Stack
- Gas Station
- Kth element in Matrix
- Is Binary Tree Heap
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Multiply two strings
- Palindrome Linked List
- Closest in BST
- BST with Dead End
- Merge two BST 's
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- Root to Leaf Paths
- Counting elements in two arrays
- K Sum Paths
- Foldable Binary Tree
- Leftmost and rightmost nodes of binary tree
- Predecessor and Successor
- Sum of nodes on the longest path
- Maximum sum of Non-adjacent nodes
- Floor in BST
- Count total set bits
- Tower Of Hanoi
- Smallest Positive Missing
- Rearrange an array with O(1) extra space
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Two Repeated Elements
- Union of 2 Sorted with Duplicates
- Count the number of possible triangles
- Make Matrix Beautiful
- Boolean Matrix
- Search in a sorted Matrix
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Case-specific Sorting of Strings
- Next Greater Element
- Activity Selection
- Fractional Knapsack
- Minimum Platforms
- Largest number in K swaps
- Stickler Thief
- Sum of all substrings of a number
- 0 - 1 Knapsack Problem
- Sort according to an Array
- Zero Sum Subarrays
- Kth Smallest
- Rotten Oranges
- Longest Subarray Of Evens And Odds
- Count subsequences of type a^i, b^j, c^k
- Sort 0s, 1s and 2s
- Pascal Triangle
- Sum of Subarrays
- Top k numbers in a stream
- Longest Span in two Binary Arrays
- Consecutive 1's not allowed
- Pythagorean Triplet
- Max Score from Subarray Mins
- Subarray Sum Divisible By K
- Sort the given array after applying the given equation
- Row with max 1s
- Check if frequencies can be equal
- Substrings with K Distinct
- Longest Subarray with Sum K
- Cutting Binary String
- Reverse each word in a given string
- k largest elements
- Longest Common Substring
- Smallest distinct window
- Longest Substring with K Uniques
- Longest Palindrome in a String
- Look and Say Pattern
- Valid Expression
- Rod Cutting
- K closest elements
- Missing element of AP
- LCS of three strings
- Equalize the Towers
- Minimum sum
- Minimum Deletions
- Nine Divisors
- Valid Substring
- Shop in Candy Store
- Number following a pattern
- Unique Number II
- Coin Change (Count Ways)
- Mobile numeric keypad
- Gold Mine Problem
- Dice throw
- Perfect Sum Problem
- Trail of ones
- Knapsack with Duplicate Items
- nCr
- LCM Triplet
- Game with String
- Next Permutation
- Smaller on Left
- Power of k in factorial of n
- Exit Point in a Matrix
- Rotate Each Row of Matrix K Times
- Print leaf nodes from preorder traversal of BST
- Count the paths
- Flood fill Algorithm
- Shortest Source to Destination Path
- Police and Thieves
- Save Your Life
- Help Classmates
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- All Palindromic Partitions
- Subarrays with sum K
- Coin Piles
- Rearrange characters
- Substrings of length k with k-1 distinct elements
- Prefix match with other strings
- Check if a String is Subsequence of Other
- 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
- Unique Number III
- Clone an Undirected Graph
- Target Sum
- K-th Largest Sum Contiguous Subarray
- Exactly one swap
- Next element with greater frequency
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Eventual Safe States
- Path With Minimum Effort
- Shortest path in Directed Acyclic Graph
- Majority Element II
- Koko Eating Bananas
- Longest subarray with Atmost two distinct integers
- Sum of subarray minimum
- Aggressive Cows
- Smallest Divisor
- Shortest Path in Weighted undirected graph
- Maximum Sum Combination
- Partitions with Given Difference
- Floor in BST
- Largest Divisible Subset
- Next Greater Element in Circular Array
- Find the longest string
- Prime List
- Unique Paths in a Grid
- Remove the balls
- Powerful Integer
- Set Matrix Zeros
- Last Moment Before All Ants Fall Out
- Search in an almost Sorted Array
- Longest Subarray with Majority Greater than K
- Balancing Consonants and Vowels Ratio
- Subarrays With At Most K Distinct Integers
- 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
- Reverse a linked list
- Remove duplicates from an unsorted linked list
- Insertion Sort
- Check for BST
- 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
- Left View of Binary Tree
- Intersection Sorted Linked Lists
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Stack using two queues
- Level Order in spiral form
- Square Root
- Binary Search
- Largest subarray of 0's and 1's
- Remove Duplicates Sorted Array
- Kth largest element in BST
- Array Duplicates
- Special Stack
- Three way partitioning
- Inorder Successor in BST
- Reverse Using Stack
- Symmetric Tree
- Find length of Loop
- Reverse First K elements of Queue
- Closest Neighbour in BST
- Delete Mid of a Stack
- The Loner - Java
- Exists or Not? - Java
- Swap the array elements
- The Pattern Matcher - Java
- Almost Equal -Java
- Count the Specials - Java
- Predict the Column - Java
- Queue Operations
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Factorial Of Number
- Digits In Factorial
- GP Term
- Primality Test
- Longest Consecutive 1's
- Exactly 3 Divisors
- Modular Inverse
- Power of 2
- Swap all odd and even bits
- Wave Array
- Frequencies in a Limited Array
- Array Leaders
- Floor in a Sorted Array
- Anagram
- Winner of an election
- Strings Rotations of Each Other
- The Modified String
- Reverse Words
- Minimum indexed character
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Count Total Digits in a Number
- Digital Root
- First Repeating Element
- Union of Arrays with Duplicates
- Check Equal Arrays
- Missing in Array
- Roman Number to Integer
- Missing And Repeating
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- String Duplicates Removal
- Minimize the sum of product
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Count the triplets
- Bitonic Point
- Alternate Positive Negative
- Palindrome Sentence
- Arya's Long String
- Remove Duplicates
- Jumping Caterpillars
- Second Largest
- Substrings with same first and last characters
- Count the Zeros
- Palindrome String
- Extract the Number from the String
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Compare two fractions
- Form a number divisible by 3 using array digits
- Maximum Collatz sequence length
- Balloon Everywhere
- Introduction to Trees
- Binary Tree Representation
- Calculate The Work Done
- Select Maximum number
- Geekina loves order
- Valuable String
- Special Array
- Count the Substrings
- Wave Array
- Antique Collections
- Find Only Repetitive Element from 1 to n-1
- Books Reordering
- Unique Number I
- Maximum Matching Pair
- Queue Using Array
- Replace all 0's with 5
- Absolute Value
- Convert Celsius To Fahrenheit
- Bit Difference
- Number is sparse or not
- Binary To Gray Code equivalent
- Most Frequent Character
- Sum of numbers in string
- Sum of Digits of a Number
- Power Using Recursion
- Addition Under Modulo
- Multiplication Under Modulo
- Immediate Smaller Element
- Largest Element in Array
- Rotate Array by One
- Ways To Tile A Floor
- Naughty Geek
- Linked List Group Reverse
- Reorder List
- Alien Dictionary
- Smallest range in K lists
- Max Circular Subarray Sum
- Word Ladder I
- Burning Tree
- Merge Without Extra Space
- Palindrome SubStrings
- Longest Prefix Suffix
- Sum-string
- Minimum sum partition
- Maximum sum Rectangle
- Word Ladder II
- Split Array Largest Sum
- Kth Smallest Number in Multiplication Table
- Max min Height
- Meeting Rooms III
- Count the Coprimes
- Longest Periodic Proper Prefix
- Maximum Non-Overlapping Odd Palindrome Sum
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