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2024
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SCHOOL (0)
BASIC (8)
EASY (158)
MEDIUM (185)
HARD (23)
Add 1 to a Linked List Number
Detect Loop in linked list
Quick Sort on Linked List
Insert in Sorted Circular Linked List
Merge Sort
Quick Sort
Intersection in Y Shaped Lists
Merge two sorted linked lists
Directed Graph Cycle
Undirected Graph Cycle
Largest subarray with 0 sum
Find the number of islands
Find kth element of spiral matrix
Max sum in the configuration
Wildcard Pattern Matching
Linked List to Binary Tree
Kth smallest element in a Matrix
Validate an IP Address
Remove loop in Linked List
Additive sequence
Implement Atoi
Palindrome Linked List
Merge two BST 's
Count distinct elements in every window
Root to leaf paths sum
Find triplets with zero sum
Top View of Binary Tree
Peak element
Pair Sum in BST
Populate Inorder Successor for all nodes
XOR Linked List
Deletion and Reverse in Circular Linked List
Gray to Binary Conversion
Smallest Positive Missing
Power Of Numbers
Maximum occured integer
Rotate and delete
Rearrange Array Alternately
Rearrange an array with O(1) extra space
Maximum Index
Rotate Array
Kadane's Algorithm
Majority Element
Count Inversions
Two Repeated Elements
Union of 2 Sorted Arrays
Indexes of Subarray Sum
Count the number of possible triangles
Triplet Sum in Array
Number of pairs
Merge Without Extra Space
Spirally traversing a matrix
Search in a sorted Matrix
Rotate by 90 degree
Distance of nearest cell having 1
Subarray range with given sum
Sort Elements by Decreasing Frequency
Longest Consecutive Subsequence
Strings Rotations of Each Other
Next Greater Element
K Sized Subarray Maximum
Nearly sorted
Minimum Platforms
Minimum Jumps
Sum of all substrings of a number
Longest Increasing Subsequence
Longest Common Subsequence
0 - 1 Knapsack Problem
Number of Unique Paths
Sort according to an Array
Allocate Minimum Pages
Zero Sum Subarrays
Find whether path exist
Kth Smallest
Shortest Common Supersequence
Rotten Oranges
Maximize The Cut Segments
Container With Most Water
Print Anagrams Together
Rotate by 90 degree
Top K Frequent in Array
Word Break
Stock Buy and Sell – Multiple Transaction Allowed
Excel Sheet | Part - 1
Sort 0s, 1s and 2s
Maximum Index
Sum of Middle elements of two sorted arrays
Single Among Doubles in a Sorted
Split the Array
Single Among Doubles
Search in Rotated Sorted Array
Count pairs Sum in matrices
Sum of bit differences
Form the Largest Number
Add Binary Strings
Maximum Product Subarray
Row with max 1s
Swapping pairs make sum equal
Check if frequencies can be equal
Nuts and Bolts Problem
Rotate a Matrix
Sum of two large numbers
Reverse each word in a given string
Longest Common Substring
Longest substring with distinct characters
Longest Palindrome in a String
K-th element of two Arrays
Triplets with Smaller Sum
Rod Cutting
Longest Palindromic Subsequence
Minimum sum
Not a subset sum
Minimize the Heights II
A difference of values and indexes
Permutations of a String
Sum of Products
Maximum Tip Calculator
Find the element at given index
Minimum number of deletions and insertions
Max Sum Increasing Subsequence
Coin Change (Count Ways)
Mobile numeric keypad
Gold Mine Problem
Perfect Sum Problem
Smallest number
Trail of ones
Find the largest number
Power Set
Knapsack with Duplicate Items
Maximum path sum in matrix
Partition Equal Subset Sum
Array Pair Sum Divisibility Problem
Prime Pair with Target Sum
Nth Natural Number
Find nth root of m
Jumping Numbers
Next Permutation
Exit Point in a Matrix
Longest alternating subsequence
Rotate Each Row of Matrix K Times
Is Sudoku Valid
Check If two Line segments Intersect
Number of Rectangles in a Circle
Integral Points Inside Triangle
Replace O's with X's
Flood fill Algorithm
Shortest Source to Destination Path
Reverse Spiral Form of Matrix
Jump Game
Max Diff Elements and Indexes
Subset Sum Problem
Longest Palindromic Substring
Subarrays with sum K
Construct list using given q XOR queries
Remove all occurences of duplicates in a linked list
Minimize the Heights I
Overlapping Intervals
Sort a k sorted doubly linked list
Shortest Distance in a Binary Maze
Number Of Enclaves
Majority Element - More Than n/3
Frog Jump
Minimal Cost
Geek's Training
Aggressive Cows
Non-overlapping Intervals
Insert Interval
Introduction to DP
Longest String Chain
Partitions with Given Difference
Triangle Path Sum
Make array elements unique
Next Greater Element in Circular Array
Minimum repeat to make substring
Unique Paths in a Grid
Kth common ancestor in BST
Prime Inversions
Kth Missing Positive Number in a Sorted Array
Count Subarrays with given XOR
Set Matrix Zeros
Count pairs with given sum
Find All Triplets with Zero Sum
Split array in three equal sum subarrays
Find H-Index
Count all triplets with given sum in sorted array
Binary Tree to DLL
Subtraction in Linked List
Trapping Rain Water
Max Circular Subarray Sum
Solve the Sudoku
Minimum Cost Path
Word Ladder I
Median of 2 Sorted Arrays of Different Sizes
Search Pattern
Count Smaller elements
Number of distinct subsequences
Longest repeating and non-overlapping substring
Edit Distance
N-Queen Problem
Search Pattern (Rabin-Karp Algorithm)
Minimum X (xor) A
Word Break (Trie)
Sorted Linked List to BST
Reverse a sublist of a linked list
IPL 2021 - Final
Stock Buy and Sell – Max 2 Transactions Allowed
Min Chars to Add for Palindrome
Chocolates Pickup
Reverse a linked list
Frequency in a Linked List
Delete N nodes after M nodes of a linked list
Node at a given index in linked list
Linked list of strings forms a palindrome
Remove duplicates from an unsorted linked list
Check for BST
Mirror Tree
Height of Binary Tree
Kth from End of Linked List
Middle of a Linked List
Left View of Binary Tree
Find Transition Point
Remove Duplicates from a Sorted Linked List
DFS of Graph
BFS of graph
Square Root
Binary Search
Run Length Encoding
Remove Duplicates Sorted Array
Remove Duplicates from an array
Toeplitz matrix
Multiply two linked lists
Max distance between same elements
Count Occurrence of digit k
Kth largest element in BST
Array Duplicates
Index of an Extra Element
Insert in a Sorted List
Split Linked List Alternatingly
Sum of leaf nodes in BST
Delete Alternate Nodes
Find the Sum of Last N nodes of the Linked List
Count Pairs whose sum is equal to X
Find n/k th node in Linked list
Linked List Matrix
Swap the array elements
Xoring and Clearing
Reverse an Array
Check K-th Bit
Modular Inverse
Power of 2
Frequencies in a Limited Array
Equilibrium Point
Array Leaders
Floor in a Sorted Array
Minimum Number in a sorted rotated array
Roof Top
Sort by Absolute Difference
Anagram
Isomorphic Strings
Reverse Words
Minimum indexed character
Non Repeating Character
Parenthesis Checker
Minimum Cost of ropes
Reach a given score
First Repeating Element
Union of Arrays with Duplicates
Missing in Array
Product array puzzle
Roman Number to Integer
Max Value Permutation
Missing And Repeating
Find Kth Rotation
Pairs which are Divisible by 4
Common in 3 Sorted Arrays
Sorted and Rotated Minimum
Maximum no of 1's row
Search in a Row-Column sorted matrix
Move All Zeroes to End
String Duplicates Removal
Minimize the sum of product
Pairs with difference k
Permutations in array
Swap and Maximize
Bitonic Point
Left most and right most index
Single Number
Alternate Positive Negative
Remaining String
Kth distance
Remove Duplicates
Nearest multiple of 10
Reorganize The Array
Facing the sun
Second Largest
Convert array into Zig-Zag fashion
Two Sum - Pair with Given Sum
Find all pairs with a given sum
Number of occurrence
Modify the Array
Convert an array to reduced form
Sum Pair closest to target
Find missing in second array
First Repeated Character
Even and odd elements at even and odd positions
Two sum -Pairs with 0 Sum
Segregate 0s and 1s
Play With OR
At Least K Occurrences
Count the Zeros
Palindrome String
Total count
Unique DigitSum
Print Bracket Number
Odd Even Problem
Binary representation of next number
Padovan Sequence
Extract the Number from the String
Divisibility by 8
Check if divisible by 10
The Nth Fibonnaci
Armstrong Numbers
Reverse Bits
Nth Fibonacci Number
Count digits in a factorial
Maximum Sum Problem
Number of digits
Count numbers containing 4
Find maximum number
N-divisors
Happy Number
Even Fibonacci Numbers Sum
Maximize Toys
Largest number possible
Number of divisors in a given range
The Palindrome Pattern
Compare two fractions
Recursive sequence
Summed Matrix
Row with Minimum 1s
Surround the 1's
Boundary Elements of Matrix
Primes sum
Array to BST
Find maximum volume of a cuboid
Plus One
Minimum steps to make product equal to one
Even and Odd
Search insert position of K in a sorted array
Move Last Element to Front of a Linked List
Insert an Element at the Bottom of a Stack
Matrix Operations
Fibonacci series up to Nth term
Stock Buy and Sell – Max one Transaction Allowed
Reverse both parts
Two Smallests in Every Subarray
Largest Pair Sum
Find Bits
Winner Team
Boundary Sum of Matrix
Two Swaps
Meeting Rooms
Count Pairs whose sum is less than target
Union of Two Sorted Arrays with Distinct Elements
Intersection of Two arrays with Duplicate Elements
Search in a row-wise sorted matrix
Find Length of Linked List
Is Linked List Length Even?
Identical Linked Lists
Triplet Family
Alternative Sorting
Check if divisible by 4
Value equal to index value
Array Subset
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