Data Structure
Java
Python
HTML
Interview Preparation
- Tutorials
- Courses
- Tracks
Campus Mantri
S
sksinha2410
starstarstar
STREAK
38/1539
days
Longest streak/Global longest streak
71 points
Contributor
71 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
11 submissions in current year
SCHOOL (1)
BASIC (11)
EASY (103)
MEDIUM (135)
HARD (34)
- Reverse alternate nodes in Link List
- Merge 2 sorted linked list in reverse order
- Implement Atoi
- Palindrome Linked List
- Print matrix in diagonal pattern
- BST with Dead End
- Merge two BST 's
- Count distinct elements in every window
- Duplicate Subtree
- Find Common Nodes in two BSTs
- Level order traversal
- Peak element
- Euler circuit and Path
- Binary Tree to CDLL
- K Sum Paths
- Isomorphic Trees
- Normal BST to Balanced BST
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Rotate and delete
- Maximum Index
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Union of 2 Sorted Arrays
- Indexes of Subarray Sum
- Merge Without Extra Space
- Level of Nodes
- Boolean Matrix
- Determinant of a Matrix
- Subarray with 0 sum
- Strings Rotations of Each Other
- K Sized Subarray Maximum
- Minimum Cost of ropes
- Fractional Knapsack
- Minimum Jumps
- Detect Cycle using DSU
- Stickler Thief
- Optimal Strategy For A Game
- Sum of all substrings of a number
- Lucky Numbers
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Nth Catalan Number
- Container With Most Water
- Top K Frequent in Array
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Flip Bits
- Top k numbers in a stream
- Pythagorean Triplet
- Painting the Fence
- Search in Rotated Sorted Array
- Count pairs Sum in matrices
- Sum of bit differences
- Form the Largest Number
- 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
- Check if frequencies can be equal
- Column name from a given column number
- Substrings with K Distinct
- Longest Subarray with Sum K
- Next Smaller Element
- Max Sum without Adjacents
- Shuffle integers
- Find the N-th character
- Sum of XOR of all pairs
- Longest Common Substring
- Rod Cutting
- LCS of three strings
- Largest Sum Subarray of Size at least K
- Minimize the Heights II
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- Number following a pattern
- Bleak Numbers
- Game of XOR
- Modified Game of Nim
- Maximize dot product
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Gold Mine Problem
- Perfect Sum Problem
- Power Set
- Knapsack with Duplicate Items
- Partition Equal Subset Sum
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Number of paths
- Nth Natural Number
- Smith Number
- Next Permutation
- How Many X's?
- Transitive closure of a Graph
- Subset Sum Problem
- Remove K Digits
- Find duplicate rows in a binary matrix
- Paths from root with a specified sum
- Shortest Prime Path
- Sort for Singly Linked List
- Anti Diagonal Traversal of Matrix
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Maximum Meetings in One Room
- Buy Maximum Stocks
- Graph is Tree or Not
- Number Of Enclaves
- Eventual Safe States
- Majority Element - More Than n/3
- Minimal Cost
- Minimum Absolute Difference In BST
- Maximum Sum Combination
- Floor in BST
- Water the plants
- Empty the String
- Shortest Subarray with Sum K
- New Year Resolution
- Grinding Geek
- Kth common ancestor in BST
- Shortest XY distance in Grid
- Minimum Time
- Split array in three equal sum subarrays
- Pairwise swap elements of a linked list
- Reverse a Doubly Linked List
- Bubble Sort
- Mirror Tree
- Height of Binary Tree
- Balanced Tree Check
- Middle of a Linked List
- Left View of Binary Tree
- Intersection Sorted Linked Lists
- Find Transition Point
- Identical Trees
- Binary Search
- Remove Duplicates Sorted Array
- Third largest element
- Multiply two linked lists
- Minimum distance in an Array
- Array Duplicates
- Index of an Extra Element
- Insert in a Sorted List
- More than n/k Occurrences
- Symmetric Tree
- Reverse first K of a Queue
- Find Sum Pairs Across Two BSTs
- Product of an Array
- Learn to Comment
- Learn to Comment - Java
- Swap the array elements
- Predict the Column
- Learning Structs
- Delete Array
- Reverse an Array
- First Set Bit
- Rightmost different bit
- Check K-th Bit
- Power of 2
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Roof Top
- Sum of upper and lower triangles
- Print Matrix in snake Pattern
- Matrix Boundary Traversal
- Anagram
- Winner of an election
- String Rotated by 2 Places
- Isomorphic Strings
- Reverse Words
- Panagram Checking
- Non Repeating Character
- Parenthesis Checker
- Reach a given score
- Count ways to N'th Stair
- Union of Arrays with Duplicates
- Missing in Array
- Product array puzzle
- Roman Number to Integer
- Missing And Repeating
- Move All Zeroes to End
- String Duplicates Removal
- Left most and right most index
- Alternate Positive Negative
- Facing the sun
- Second Largest
- Convert array into Zig-Zag fashion
- Rotate Bits
- Number of occurrence
- String's Count
- Play With OR
- At Least K Occurrences
- Find the closest pair from two arrays
- Total count
- Minimum Operations
- Divisibility by 8
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Maximum Sum Problem
- Shortest path from 1 to n
- Sum 1 to n Divisors
- Reach the Nth point
- Perfect Numbers
- Largest number possible
- Form a number divisible by 3 using array digits
- Tom and Jerry
- Coverage of all Zeros in a Binary Matrix
- Letters Collection
- Print Pattern
- Sum of dependencies in a graph
- Triangle and Square
- Choice
- Pattern 4
- Pattern 16
- Print N to 1 without loop
- Stock Buy and Sell – Max one Transaction Allowed
- Introduction to Trees
- Pass by Reference and Value
- Weird Island
- Maximum AND
- Negative Prefix
- Is it a Leap Year
- Maximum Happiness
- Array Game
- Maximum Distance
- Count the complement pairs
- Binary Tree to DLL
- Clone List with Next and Random
- Distinct occurrences
- AVL Tree Insertion
- Nodes at given distance in binary tree
- Max Circular Subarray Sum
- Smallest window containing all characters
- Search Pattern
- Longest Prefix Suffix
- Number of distinct subsequences
- Wildcard string matching
- Longest repeating and non-overlapping substring
- Sum-string
- Minimum Points To Reach Destination
- Palindromic Partitioning
- Strictly Increasing Array
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Longest valid Parentheses
- Brackets in Matrix Chain Multiplication
- Search Pattern (Rabin-Karp Algorithm)
- Find all Critical Connections in the Graph
- Distribute Candies
- Split Array Largest Sum
- Find the String
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Vertex Cover
- Candy
- Better String
- Geekina Hate 1s
- Making A Large Island
- Asterisk or Question Mark?