Data Structure
Java
Python
HTML
Interview Preparation
- Tutorials
- Courses
- Tracks
milindgupta578
STREAK
27/1559
days
Longest streak/Global longest streak
Organization
Urban Vault
Language Used
C++, C, Python, Java, Javascript
Coding Score
1618
Problem Solved
505
Contest Rating
__
60 points
Contributor
60 points
Contributor
1 Point
Proficient
Proficient
100 Point
Scholar
Scholar
1k Point
Master
Master
10k Point
Ace
Ace
50k Point
6 submissions in current year
SCHOOL (2)
BASIC (40)
EASY (150)
MEDIUM (262)
HARD (51)
- Reverse alternate nodes in Link List
- Rotate a Linked List
- Sort a linked list of 0s, 1s and 2s
- Add Number Linked Lists
- Rearrange a linked list
- 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
- Check for BST
- Merge Sort
- Quick Sort
- Binary Tree from Inorder and Postorder
- Delete without head pointer
- Intersection in Y Shaped Lists
- Diameter of a Binary Tree
- Merge two sorted linked lists
- Connect Nodes of Levels
- Flattening a Linked List
- Stack using Queue
- Tree Boundary Traversal
- Implement stack using array
- Directed Graph Cycle
- Undirected Graph Cycle
- LCA in Binary Tree
- Lowest Common Ancestor in a BST
- Two Stacks in an Array
- The Celebrity Problem
- Topological Sort
- Vertical Tree Traversal
- Merge K sorted linked lists
- Find the number of islands
- Get Min from Stack
- Kth smallest element in a Matrix
- Validate an IP Address
- Remove loop in Linked List
- Dijkstra Algorithm
- Multiply two strings
- Minimum Swaps to Sort
- Implement Atoi
- Palindrome Linked List
- Rat in a Maze
- Bipartite Graph
- Delete keys in a Linked list
- Merge two BST 's
- Root to leaf paths sum
- Find triplets with zero sum
- Sort a stack
- Top View of Binary Tree
- Level order traversal
- Peak element
- Euler Circuit in an Undirected Graph
- Pair Sum in BST
- Root to Leaf Paths
- Construct Tree from Inorder & Preorder
- Maximum path sum
- ZigZag Tree Traversal
- Vertical Width of a Binary Tree
- C++ Friend function
- C++ Generic sort
- Tower Of Hanoi
- Smallest Positive Missing
- Power Of Numbers
- Wave Array
- Possible Words From Phone Digits
- Rearrange Array Alternately
- Maximum Index
- Stock buy and sell
- Rotate Array
- Kadane's Algorithm
- Majority Element
- Count Inversions
- Two Repeated Elements
- Unique BST's
- Indexes of Subarray Sum
- Count the number of possible triangles
- Triplet Sum in Array
- Merge Without Extra Space
- Possible paths between 2 vertices
- Level of Nodes
- Boolean Matrix
- Spirally traversing a matrix
- Search in a sorted Matrix
- Rotate by 90 degree
- Determinant of a Matrix
- Unit Area of largest region of 1's
- Subarray with 0 sum
- Subarrays with equal 1s and 0s
- Longest Consecutive Subsequence
- Postfix Evaluation
- Stock span problem
- Next Greater Element
- K Sized Subarray Maximum
- Kth largest element
- Minimum Cost of ropes
- Find median in a stream
- Fractional Knapsack
- Minimum Platforms
- Unique Subsets
- Minimum Jumps
- Stickler Thief
- Ways to Reach the n'th Stair
- Longest Increasing Subsequence
- Longest Common Subsequence
- 0 - 1 Knapsack Problem
- Number of Unique Paths
- Sort according to an Array
- Allocate Minimum Pages
- X Total Shapes
- Zero Sum Subarrays
- Kth Smallest
- Implement Trie
- Shortest Common Supersequence
- Rotten Oranges
- Count subsequences of type a^i, b^j, c^k
- Container With Most Water
- Print Anagrams Together
- Rotate by 90 degree
- Top K Frequent in Array
- Maximum Subarray Sum
- Generate Parentheses
- Word Search
- 4 Sum - All Quadruples
- Excel Sheet | Part - 1
- Sort 0s, 1s and 2s
- Pascal Triangle
- Number of subarrays with maximum values in given range
- Sum of Subarrays
- Top k numbers in a stream
- Sum of Middle elements of two sorted arrays
- Consecutive 1's not allowed
- Count Occurences of Anagrams
- Single Among Doubles
- Painting the Fence
- Search in Rotated Sorted Array
- Sum of bit differences
- Form the Largest Number
- Maximum Product Subarray
- Longest subarray with sum divisible by K
- Check if a string is repetition of its substring of k-length
- Row with max 1s
- Concatenation of Zig-Zag String in n Rows
- Form a palindrome
- Max Sum without Adjacents
- Reverse each word in a given string
- Remove leading zeros from an IP address
- k largest elements
- Longest Common Substring
- Valid Expression
- Triplets with Smaller Sum
- Rod Cutting
- Smallest Absolute Difference
- LCS of three strings
- Longest Palindromic Subsequence
- Largest Sum Subarray of Size at least K
- Maximum difference of zeros and ones in binary string
- Minimize the Heights II
- Transform to prime
- Smaller on Left
- Minimum Deletions
- Valid Substring
- Permutations of a String
- Unique Number II
- Largest prime factor
- Modified Game of Nim
- Minimum number of deletions and insertions
- Max Sum Increasing Subsequence
- Coin Change (Count Ways)
- Sequence of Sequence
- Sieve of Eratosthenes
- Gold Mine Problem
- Coin Change (Minimum Coins)
- Perfect Sum Problem
- Power Set
- Count ways to N'th Stair(Order does not matter)
- Minimum Cost To Make Two Strings Identical
- Knapsack with Duplicate Items
- Maximum path sum in matrix
- Partition Equal Subset Sum
- XOR Game
- Min Coin
- Part of it.
- Handshakes
- Count possible ways to construct buildings
- Array Pair Sum Divisibility Problem
- Number of paths
- Nth Natural Number
- Return two prime numbers
- Find Prime numbers in a range
- Game with String
- Fraction to Repeating Decimal
- Smith Number
- Next Permutation
- Mics & Jury
- Smaller on Left
- How Many X's?
- Exit Point in a Matrix
- Longest Repeating Subsequence
- Decode the string
- Total Decoding Messages
- Stream First Non-repeating
- Buying Vegetables
- Largest square formed in a matrix
- Kth Largest in a Stream
- Rohan's Love for Matrix
- Array to BST
- Techfest and the Queue
- Largest subsquare surrounded by X
- Recursively Remove Adjacent Duplicates
- Make it One
- Valid Pair Sum
- Transfiguration
- Restrictive Candy Crush
- Help Classmates
- Escape the Forbidden Forest
- Jump Game
- Iterative Inorder
- Preorder traversal (Iterative)
- Iterative Postorder
- Subset Sum Problem
- 3 Sum Closest
- Subarrays with sum K
- Remove BST keys outside given range
- Partition a Linked List around a given value
- Searching an element in a sorted array (Ternary Search)
- Capacity To Ship Packages Within D Days
- Rearrange characters
- 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
- Minimize the Heights I
- Anti Diagonal Traversal of Matrix
- Next Greater Element
- Unique Number III
- All Unique Permutations of an array
- Course Schedule II
- Find a pair with given target in BST
- Overlapping Intervals
- Walls Coloring
- Robots
- Maximum Meetings in One Room
- Buy Maximum Stocks
- Concatenate Equal to Target
- Exactly one swap
- Graph is Tree or Not
- Sum up the beauty
- Water Problem
- Target Path Sum
- Make array Equal
- Longest String Chain
- Maximum Points Covered
- Difference Tree
- Water the plants
- Find Number
- Construct a Full Binary Tree
- Score of Array
- Subtree with k primes
- New Year Resolution
- Grinding Geek
- Find H-Index
- Geek and his Marks
- Reverse a linked list
- Frequency in a Linked List
- Pairwise swap elements of a linked list
- Delete nodes having greater value on right
- Inorder Traversal
- Bubble Sort
- Selection Sort
- Insertion Sort
- Right View of Binary Tree
- K distance from root
- Mirror Tree
- Height of Binary Tree
- Kth from End of Linked List
- Middle of a Linked List
- Check If Circular Linked List
- Left View of Binary Tree
- Delete Middle of Linked List
- Decimal Equivalent of Binary Linked List
- Find Transition Point
- Remove Duplicates from a Sorted Linked List
- Postorder Traversal
- Reverse Level Order Traversal
- DFS of Graph
- Insert a node in a BST
- BFS of graph
- Identical Trees
- Root to leaf path sum
- Square Root
- Largest subarray of 0's and 1's
- BST Keys in a Range
- Third largest element
- Delete in a Singly Linked List
- Array Duplicates
- Index of an Extra Element
- Level of a Node in Binary Tree
- Minimum element in BST
- More than n/k Occurrences
- Max and min element in Binary Tree
- Reverse Using Stack
- Full Binary Tree
- Delete Alternate Nodes
- Count Pairs whose sum is equal to X
- Reverse first K of a Queue
- Sum of Leaf Nodes
- C++ Function overloading
- The New Line
- Taking input
- Learn to Comment
- GetLine and Ignore
- Learning to be precise
- Swap the array elements
- Count the Specials
- Consonants and Vowels check
- Two Dimensional World
- Sum of Big Integers
- Find the Frequency
- Back to Front
- Get min at pop
- Rightmost different bit
- Equilibrium Point
- Minimum Number in a sorted rotated array
- Roof Top
- Print adjacency list
- Transpose of Matrix
- Check if a string is Isogram or not
- Anagram
- The Modified String
- Reverse Words
- Minimum indexed character
- Non Repeating Character
- Parenthesis Checker
- Generate Binary Numbers
- N meetings in one room
- First Repeating Element
- Union of Arrays with Duplicates
- Common Elements
- Two Sum
- Missing in Array
- Roman Number to Integer
- Search an element in sorted and rotated array
- Intersection of Arrays with Distinct
- Max Value Permutation
- Missing And Repeating
- Non-Repeating Element
- Pairs of equals Sum
- Sort by Set Bit Count
- Common in 3 Sorted Arrays
- Sorted and Rotated Minimum
- Move All Zeroes to End
- String Duplicates Removal
- Count the triplets
- Find Pair Given Difference
- Bitonic Point
- Left most and right most index
- Sort Array II
- Remove b and ac from a given string
- Remove Duplicates
- Two Sum - Pair with Given Sum
- Find all pairs with a given sum
- Number of occurrence
- Does array represent Heap
- Check if array is sorted
- Find missing in second array
- String's Count
- Longest Common Prefix of Strings
- Play With OR
- At Least K Occurrences
- Count the Zeros
- Four Elements
- Palindrome String
- Fitting The Array
- Max Sum Subarray of size K
- Nth Fibonacci Number
- Palindrome
- Maximum Sum Problem
- Find maximum number
- Reach the Nth point
- Number Of Open Doors
- Maximize Toys
- Check if it is possible to survive on Island
- Trailing zeroes in factorial
- Sum of all prime numbers between 1 and n
- Subtraction and two numbers
- Sum of First N Natural Numbers
- Tom and Jerry
- Rearrange the Digits
- Multiply two polynomials
- Primes sum
- Break Numbers[Duplicate problem]
- Rearrange Geek and his Classmates
- Plus One
- Sum of two numbers without using arithmetic operators
- Largest value in each level
- Remainder on dividing by 11
- Wave Array
- Max Sum without Adjacents
- Maximum Frequency
- Finding Non Zero Digit
- Smallest window containing 0, 1 and 2
- Can Make Triangle
- Palindromic array
- Odd Series
- Refueling
- Geek left with No Food
- Geek & Geekina Purchasing Ice Cream
- Jump over Array - 1
- String Operations
- Max Level Sum in Binary Tree
- Magic and toy shop
- Linked List Group Reverse
- Reorder List
- Binary Tree to DLL
- Clone List with Next and Random
- Max rectangle
- LRU Cache
- Maximum subset XOR
- Alien Dictionary
- Smallest range in K lists
- Merge Sort on Doubly Linked List
- Max Path Sum 2 Special Nodes
- Trapping Rain Water
- Max Circular Subarray Sum
- Smallest window containing all characters
- Histogram Max Rectangular Area
- Solve the Sudoku
- Median of 2 Sorted Arrays of Different Sizes
- Burning Tree
- Merge Without Extra Space
- The Painter's Partition Problem-II
- Ugly Numbers
- Search Pattern
- Longest Prefix Suffix
- Wildcard string matching
- Longest repeating and non-overlapping substring
- Edit Distance
- Minimum sum partition
- Palindromic Partitioning
- Matrix Chain Multiplication
- Median in a row-wise sorted Matrix
- Boolean Parenthesization
- Longest valid Parentheses
- Word Break - 2
- Smallest Positive Integer that can not be represented as Sum
- Corona Vaccine
- Search Pattern (Rabin-Karp Algorithm)
- Find all Critical Connections in the Graph
- Sorted Linked List to BST
- Longest Increasing Path in a Matrix
- Distribute Candies
- Shortest Unique prefix for every word
- IPL 2021 - Final
- Split Array Largest Sum
- Find the String
- Subset sums between the given range
- Largest rectangular sub-matrix whose sum is 0
- Minimum time to fulfil all orders
- Vertex Cover
- Expression Add Operators
- Candy
- Geekina Hate 1s
- Rotate Array
- Print Linked List
- Find Length of Linked List
- Count Leaves in Binary Tree
- Queue Using Array
- Replace all 0's with 5
- Count zeros in a sorted matrix
- Preorder Traversal
- Remainder with 7
- Anagram of String
- Is Linked List Length Even?
- Identical Linked Lists
- Start Coding
- Count Odd and Even
- Sort and Reverse Vector
- Array Search
- Reverse a String
- Keypad typing
- C++ Hello World
- Sum of Array
- Doubling the value
- Balanced Array
- Anagram Palindrome
- Fighting the darkness
- First 1 in a Sorted Binary Array
- Sort the string in descending order
- Largest Element in Array
- Rotate Array by One
- Array Subset
- Product is even or odd?
- Minimum number to form the sum even
- Print first letter of every word in the string
- Magical String[Duplicate Problem]
- Find position of set bit
- House Robber
- Difference series
- Square Divisors
- Matching Pair
- Print Square
- Half N by M