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malavmevada
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2016
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BASIC (21)
EASY (164)
MEDIUM (296)
HARD (53)
- Geek and New Job
- Reverse a linked list
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Delete in a Doubly Linked List
- Reverse a Doubly Linked List
- Bubble Sort
- Selection Sort
- Insertion Sort
- Check for BST
- Right View of Binary Tree
- Delete without head pointer
- Height of Binary Tree
- Balanced Tree Check
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Intersection Sorted Linked Lists
- Remove Duplicates from a Sorted Linked List
- Level Order in spiral form
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Square Root
- Lowest Common Ancestor in a BST
- Binary Tree to BST
- Unique rows in boolean matrix
- Remove every k'th node
- Leaves at Same Level or Not
- Delete in a Singly Linked List
- Kth largest element in BST
- Minimum distance in an Array
- Three way partitioning
- Level order traversal
- Inorder Successor in BST
- Disjoint set (Union-Find)
- Insert in a Sorted List
- Sum of leaf nodes in BST
- More than n/k Occurrences
- Count Pairs whose sum is equal to X
- Find length of Loop
- Median of BST
- Leaf under budget
- Reverse first K of a Queue
- Closest Neighbour in BST
- Delete Mid of a Stack
- Swap the array elements
- Predict the Column
- Xoring and Clearing
- Frequency in Queue
- First Set Bit
- Rightmost different bit
- K-th Bit is Set or Not
- Power of 2
- Wave Array
- Frequencies in a Limited Array
- Equilibrium Point
- Array Leaders
- Floor in a Sorted Array
- Print adjacency list
- Sum of upper and lower triangles
- Transpose of Matrix
- Matrix Boundary Traversal
- Winner of an election
- String Rotated by 2 Places
- Strings Rotations of Each Other
- Panagram Checking
- Non Repeating Character
- Minimum Cost of ropes
- N meetings in one room
- Reach a given score
- Count ways to N'th Stair
- Count number of hops
- Roman Number to Integer
- Missing And Repeating
- Count the elements
- Find Kth Rotation
- Adding Ones
- Move All Zeroes to End
- String Duplicates Removal
- Missing number
- Chocolate Distribution Problem
- Count pairs Sum in matrices
- Second Largest
- Rotate Bits
- Number of occurrence
- Does array represent Heap
- Check if array is sorted
- Find missing in second array
- Palindrome String
- Fitting The Array
- Balanced string
- Is Binary Number Multiple of 3
- Minimum Operations
- Divisibility by 8
- Number of 1 Bits
- Armstrong Numbers
- Reverse Bits
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Ceil The Floor
- Copy Set Bits in Range
- Count Digits
- Maximum Sum Problem
- Party of Couples
- Sum 1 to n Divisors
- The Bit Game
- Reach the Nth point
- Minimum number of Coins
- Number Of Open Doors
- Break a number
- Perfect Numbers
- Smallest number with sum of digits as N and divisible by 10^N
- Factorials Less than or Equal to n
- Largest number possible
- Page Faults in LRU
- Recamans sequence
- Sum of First N Natural Numbers
- Find nth root of m
- Prime Factors
- Recursive sequence
- Tom and Jerry
- Maximum Diamonds
- Row with Minimum 1s
- Surround the 1's
- Help Ishaan
- Sequence Fun
- Primes sum
- Chicks in a Zoo
- Maximum Sum LCM
- Check if it is possible to convert one string into another with given constraints
- Minimum Exchange
- Earthquake and the Paint Shop
- Sum of dependencies in a graph
- Count all possible paths from top left to bottom right
- Ball coloring
- Modified Numbers and Queries
- Sum of k smallest elements in BST
- Print Diagonally
- Maximum number of 2X2 squares
- Minimum cost of ropes
- Geek and Snow Fighting
- License Key Formatting
- Smallest Subset with Greater Sum
- Minimum Sum of Absolute Differences of Pairs
- Smallest window containing 0, 1 and 2
- Move Last Element to Front of a Linked List
- Insert an Element at the Bottom of a Stack
- Find pairs with given sum in doubly linked list
- Fibonacci series up to Nth term
- All divisors of a Number
- Find XOR of numbers from L to R.
- Maximum Depth Of Binary Tree
- Introduction to Trees
- Binary Search Trees
- Graph and Vertices
- Unique Binary Tree Requirements
- Binary Tree Representation
- Wifi Range
- Seating Arrangement
- Total Traversal Time
- Antique Collections
- Ticket Counter
- Unique Number of Occurrences
- Linked List Group Reverse
- Reorder List
- Min distance between two given nodes of a Binary Tree
- Subtraction in Linked List
- Distinct occurrences
- Alien Dictionary
- AVL Tree Deletion
- Merge Sort on Doubly Linked List
- Nodes at given distance in binary tree
- String Permutations
- Solve the Sudoku
- Word Ladder I
- Next Smallest Palindrome
- Count Pairs in an Array
- Search Pattern (KMP-Algorithm)
- Number of distinct subsequences
- Wildcard string matching
- Longest repeating and non-overlapping substring
- Print all LCS sequences
- Edit Distance
- Minimum Points To Reach Destination
- Minimum sum partition
- Number Formation
- Palindromic Partitioning
- Next Happy Number
- Matrix Chain Multiplication
- Strictly Increasing Array
- Median in a row-wise sorted Matrix
- Generalised Fibonacci numbers
- Boolean Parenthesization
- Possible Paths in a Tree
- Brackets in Matrix Chain Multiplication
- Phone directory
- Find all Critical Connections in the Graph
- Count occurrences of a given word in a 2-d array
- Word Ladder II
- Split Array Largest Sum
- Shortest Path by Removing K walls
- Find the String
- Articulation Point - I
- Stock Buy and Sell – Max 2 Transactions Allowed
- Min Chars to Add for Palindrome
- Largest rectangular sub-matrix whose sum is 0
- Maximum Connected group
- Candy
- Chocolates Pickup
- Better String
- Largest Sum Cycle
- Partition the Array
- Minimum BST Sum Subtree
- Min Time
- Geekina Hate 1s
- Making A Large Island
- Reverse alternate nodes in Link List
- Sort a linked list of 0s, 1s and 2s
- Add 1 to a Linked List Number
- Merge 2 sorted linked list in reverse order
- Detect Loop in linked list
- Insert in Sorted Circular Linked List
- Merge Sort
- Quick Sort
- Bottom View of Binary Tree
- Heap Sort
- Flattening a Linked List
- Tree Boundary Traversal
- Directed Graph Cycle
- Undirected Graph Cycle
- Two Stacks in an Array
- The Celebrity Problem
- Largest subarray with 0 sum
- Topological sort
- Find the number of islands
- Find kth element of spiral matrix
- Remove loop in Linked List
- Dijkstra Algorithm
- Minimum Spanning Tree
- Additive sequence
- Largest BST
- Multiply two strings
- Implement Atoi
- Count of distinct substrings
- Strongly Connected
- Print matrix in diagonal pattern
- Rat in a Maze Problem - I
- Merge k Sorted Arrays
- Bridge edge in a graph
- Find triplets with zero sum
- Sort a stack
- Duplicate Subtree
- Top View of Binary Tree
- k-th Smallest in BST
- Find Common Nodes in two BSTs
- Union of Two Linked Lists
- Euler Circuit in an Undirected Graph
- Binary Tree to CDLL
- Linked List that is Sorted Alternatingly
- Leftmost and rightmost nodes of binary tree
- Count the nodes at distance K from leaf
- Isomorphic Trees
- Predecessor and Successor
- Children Sum in a Binary Tree
- Diagonal sum in binary tree
- Normal BST to Balanced BST
- Sum of nodes on the longest path
- Kth Ancestor in a Tree
- ZigZag Tree Traversal
- Mother Vertex
- Gray to Binary equivalent
- Smallest Positive Missing
- Power Of Numbers
- Rearrange Array Alternately
- Rearrange an array with O(1) extra space
- Maximum Index
- Kadane's Algorithm
- Count Inversions
- Two Repeated Elements
- Union of 2 Sorted with Duplicates
- Indexes of Subarray Sum
- Merge Without Extra Space
- Level of Nodes
- Make Matrix Beautiful
- Boolean Matrix
- Spirally traversing a matrix
- Determinant of a Matrix
- Distance of nearest cell having 1
- Subarray with 0 sum
- Infix to Postfix
- K Sized Subarray Maximum
- Fractional Knapsack
- Job Sequencing Problem
- Minimum Platforms
- Black and White
- M-Coloring Problem
- Minimum Jumps
- 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
- Lucky Numbers
- Number of Unique Paths
- Allocate Minimum Pages
- Kth Smallest
- Shortest Common Supersequence
- Nth Catalan Number
- Word Break
- Stock Buy and Sell – Multiple Transaction Allowed
- 4 Sum - All Quadruples
- Sort 0s, 1s and 2s
- Paths to reach origin
- Complement
- Maximum Sub Array
- Pascal Triangle
- Maximum Index
- Number of subarrays with maximum values in given range
- Flip Bits
- Consecutive 1's not allowed
- Count of Subarrays
- Painting the Fence
- Sum of bit differences
- Count Full Binary Trees
- Form the Largest Number
- Alternate Vowel and Consonant String
- Add Binary Strings
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Row with max 1s
- Column name from a given column number
- Substrings with K Distinct
- Form a palindrome
- Max Sum without Adjacents
- k largest elements
- Longest Common Substring
- Longest Substring with K Uniques
- Longest Palindrome in a String
- K-th element of two Arrays
- Rod Cutting
- Maximize the sum of selected numbers from a sorted array to make it empty
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Build the smallest
- Transform to prime
- First and Last Occurrences
- Minimum Deletions
- Print N-bit binary numbers having more 1s than 0s
- Find patterns
- Lexicographically smallest string
- Sum of Products
- Subarrays Product Less than K
- Unique Number II
- Bleak Numbers
- Game of XOR
- Largest prime factor
- 3 Divisors
- Modified Game of Nim
- Minimum number of deletions and insertions
- Maximize dot product
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Gold Mine Problem
- Perfect Sum Problem
- Power Of 2 and Subsequences
- Shreyansh and his bits
- Power Set
- Knapsack with Duplicate Items
- nCr
- Subsets with XOR value
- Maximum path sum in matrix
- Partition Equal Subset Sum
- Longest Bitonic subsequence
- Count possible ways to construct buildings
- Count digit groupings of a number
- Array Pair Sum Divisibility Problem
- Magic Triplets
- Fill up buckets
- Matchsticks game
- Subset Sums
- Unique partitions
- Stepping Numbers
- Number of paths in a matrix with k coins
- LCM Triplet
- Jumping Numbers
- A Game of LCM
- Game with String
- Grouping Of Numbers
- Find the Safe Position
- Smith Number
- Smaller on Left
- Maximum sum of hour glass
- Filling Bucket
- Exit Point in a Matrix
- Longest Repeating Subsequence
- Composite and Prime
- Decode the string
- Stream First Non-repeating
- Maximum Sub-String after at most K changes
- 2D Hopscotch
- Print leaf nodes from preorder traversal of BST
- Longest Perfect Piece
- Geek and Strings
- The Smurfs
- Satisfy the equation
- Transitive closure of a Graph
- Replace O's with X's
- Two numbers with odd occurrences
- Rohan's Love for Matrix
- Queries on a Matrix
- Traverse All Edges And Vertices
- Find the string in grid
- Floyd Warshall
- Techfest and the Queue
- Largest subsquare surrounded by X
- Shortest Source to Destination Path
- Base Equivalence
- Reverse Spiral Form of Matrix
- Geek and Number String
- Save Your Life
- Hamiltonian Path
- Iterative Postorder
- Subset Sum Problem
- Search Pattern (Rabin-Karp Algorithm)
- Bellman-Ford
- Remove K Digits
- Substrings of length k with k-1 distinct elements
- Number of Provinces
- Prefix match with other strings
- Find duplicate rows in a binary matrix
- BST to max heap
- Shortest Prime Path
- Insertion Sort for Singly Linked List
- Flatten binary tree to linked list
- Anti Diagonal Traversal of Matrix
- Connect Nodes at Same Level
- IPL 2021 - Match Day 2
- Unique Number III
- All Unique Permutations of an array
- Course Schedule
- Clone an Undirected Graph
- Maximum Value
- Reverse a Stack
- Maximum Meetings in One Room
- Enemy
- Buy Maximum Stocks
- Smallest sum contiguous subarray
- Array Removals
- Find shortest safe route in a matrix
- Stack Permutations
- Graph is Tree or Not
- Replace every element with the least greater element on its right
- Minimum Swaps
- Construct Binary Tree from String with bracket representation
- Check if all levels of two trees are anagrams or not
- Number of Distinct Islands
- Shortest Distance in a Binary Maze
- Minimum Multiplications to reach End
- Number Of Enclaves
- Eventual Safe States
- City With the Smallest Number of Neighbors at a Threshold Distance
- Alex Travelling
- Number Of Islands
- Number of Ways to Arrive at Destination
- Path With Minimum Effort
- Cheapest Flights Within K Stops
- Connecting the graph
- Shortest Path in Undirected Graph
- Shortest path in Directed Acyclic Graph
- Sum of Beauty of All Substrings
- Find length of the longest subarray containing atmost two distinct integers
- Frog Jump
- Minimal Cost
- Geek's Training
- Grid Path 2
- Aggressive Cows
- Number of greater elements to the right
- Shortest Path in Weighted undirected graph
- Prime Factorization using Sieve
- Prefix to Infix Conversion
- Prefix to Postfix Conversion
- Postfix to Prefix Conversion
- Postfix to Infix Conversion
- Task Scheduler
- Minimum Absolute Difference In BST
- Lemonade Change
- Maximum Sum Combination
- Replace elements by its rank in the array
- Shortest Job first
- Introduction to DP
- Print Longest Increasing Subsequence
- Bit's basic operations
- Partitions with Given Difference
- Index of the First Occurrence of pattern in a text
- Floor in BST
- Triangle Path Sum
- Remove the balls
- Unequal Arrays
- Job Sequencing Problem
- Bheem Wants Ladoos
- Prefix Suffix String
- Fraction pairs with sum 1
- New Year Resolution
- Grinding Geek
- Flatten BST to sorted list
- Minimize the Difference
- Pairs violating the BST property
- Kth common ancestor in BST
- Count Linked List Nodes
- Doubly linked list Insertion at given position
- Preorder Traversal
- Linked List Insertion At End
- Minimum element in BST
- Print 1 To N Without Loop
- Sorted Array Search
- Reverse a String
- First n Fibonacci
- Value equal to index value
- Immediate Smaller Element
- Largest Element in Array
- Odd or Even
- Set the rightmost unset bit
- LCM And GCD
- Sum of first n terms
- Count Squares
- Middle of Three
- Swap two numbers
- Sorted matrix
- Max Min
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