Alexandre Pokhodoun

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      • BFS
      • hash map
      • heap
      • monotonic stack
      • recursion
      • sliding window
      • sorted order
      • stack
      • subarray
      • subsequence
      • tree
      • union find
      • visualization
        • 01 matrix
        • 2 keys keyboard
        • 3sum
        • 3sum closest
        • 3sum smaller
        • Add two numbers
        • All nodes distant k in binary tree
        • Amount of time for binary tree to be infected
        • Analyze user website visit pattern
        • Apply discount to prices
        • Arithmetic slices
        • Arithmetic slices II
        • Balance a binary search tree
        • Basic calculator
        • Basic calculator II
        • Best time to buy and sell stock
        • Best time to buy and sell stock II
        • Binary tree vertical order traversal
        • Binary tree zigzag level order traversal
        • Boundary of binary tree
        • Bus routes
        • Can arrange
        • Can I win
        • Candy
        • Champagne tower
        • Cheapest flights within k stops
        • Check if two chessboard squares have the same color
        • Climbing stairs
        • Clone binary tree with random pointer
        • Coin change
        • Combination sum II
        • Compare version numbers
        • Constrained subsequence sum
        • Container with most water
        • Contiguous array
        • Count good numbers
        • Count nice pairs in an array
        • Count nodes with the highest score
        • Count primes
        • Count the number of fair pairs
        • Count the number of good subarrays
        • Course schedule
        • Course schedule II
        • Cousins in binary tree
        • Custom sort string
        • Daily temperatures
        • Diameter of a binary tree
        • Difference between ones and zeros in row and column
        • Different ways to add parentheses
        • Distribute candies among children I
        • Edit distance
        • Erect the fence
        • Evaluate division
        • Evaluate reverse polish notation
        • Filling bookcase shelves
        • Find all people with secret
        • Find eventual safe states
        • Find in mountain array
        • Find k pairs with smallest sums
        • Find largest value in each tree row
        • Find median from data stream
        • Find missing observations
        • Find the closest palindrome
        • Find the longest substring containing vowels in even counts
        • Flatten a multilevel doubly linked list
        • Flood fill
        • Furthest building you can reach
        • Gas station
        • Generate parentheses
        • Greatest common divisor of strings
        • Group anagrams
        • H-index
        • Happy number
        • Heaters
        • House robber
        • Image smoother
        • Implement queue using stacks
        • Insert delete getrandom o(1)
        • Integer break
        • Integer to english words
        • Integer to roman
        • Jump game
        • Jump game II
        • Kill process
        • Knight dialer
        • Koko eating bananas
        • Kth largest element in an array
        • Kth symbol in grammar
        • Largest number
        • Largest triangle area
        • Length of the longest subsequence that sums to target
        • Letter combinations of a phone number
        • Lexicographical numbers
        • Lexicographically smallest string after substring operation
        • LFUcache
        • Linked list in binary tree
        • Longest arithmetic subsequence of given difference
        • Longest common prefix
        • Longest consecutive sequence
        • Longest continuous subarray with absolute diff less than or equal to limit
        • Longest duplicate substring
        • Longest increasing subsequence
        • Longest palindromic substring
        • Longest repeating substring
        • Longest substring with at least k repeating characters
        • Longest substring without repeating characters
        • Longest valid parentheses
        • Lowest common ancestor of a binary tree
        • LRUcache
        • Majority element
        • Majority element II
        • Matrix diagonal sum
        • Max consecutive ones III
        • Maximal square
        • Maximize score of numbers in ranges
        • Maximum length of a concatenated string with unique characters
        • Maximum number of alloys
        • Maximum number of events that can be attended
        • Maximum path sum
        • Maximum product subarray
        • Maximum profit in job scheduling
        • Maximum subarray
        • Maximum subarray sum with one deletion
        • Median of two sorted arrays
        • Meeting rooms II
        • Merge intervals
        • Merge k sorted lists
        • Merge sorted array
        • Merge strings alternately
        • Merge two sorted lists
        • Minimum add to make parentheses valid
        • Minimum adjacent swaps to make a valid array
        • Minimum average difference
        • Minimum cost for tickets
        • Minimum cost to convert string II
        • Minimum deletions to make character frequencies unique
        • Minimum number of coins to be added
        • Minimum number of operations to make array empty
        • Minimum number of pushes to type word I
        • Minimum number of pushes to type word II
        • Minimum operation to reduce x to zero
        • Minimum operations to make a subsequence
        • Minimum path sum
        • Minimum replacements to sort the array
        • Minimum size subarray sum
        • Minimum suffix flips
        • Minimum swaps to group all 1s together
        • Minimum swaps to group all 1s together II
        • Minimum time difference
        • Missing number
        • Most expensive item that can not be bought
        • Most possible negatives
        • My calendar I
        • N-ary tree postorder traversal
        • N-queens
        • Network delay time
        • Next greater element II
        • Next permutation
        • Number if islands
        • Number of flowers in full bloom
        • Number of provinces
        • Number of valid subarrays
        • Number of ways to select buildings
        • Painting the walls
        • Palindrome partitioning
        • Partition array for maximum sum
        • Path crossing
        • Path sum II
        • Path sum III
        • Peak index in a mountain array
        • Plates between candles
        • Plus one
        • Poor pigs
        • pow(x,n)
        • Power of 2
        • Predict the winner
        • Product of array except self
        • Pseudo palindromic paths in a binary tree
        • Race car
        • Random pick with weight
        • Rearrange string k distance apart
        • Redistribute characters to make all strings equal
        • Relative sort array
        • Remove colored pieces if both neighbors are the same color
        • Remove element
        • Reordered power of 2
        • Reorganize string
        • Restore ip addresses
        • Reverse integer
        • Reverse nodes in k group
        • Roman to integer
        • Rotate array
        • Rotate image
        • Rotate string
        • Rotting oranges
        • Search a 2d matrix II
        • Search in rotated sorted array
        • Search insert position
        • Sequential digits
        • Set matrix zeroes
        • Set mismatch
        • Shortest and lexicographically smallest beautiful string
        • Shortest palindrome
        • Shortest subarray with sum at least k
        • Sliding window maximum
        • Smallest range covering elements from k lists
        • Snakes and ladders
        • Sort an array
        • Special array with x elements greater than or equal x
        • Spiral matrix
        • Stone game
        • Stone game II
        • String to integer atoi
        • Subarray sum equals k
        • Sudoku solver
        • Task scheduler
        • The kth factor of n
        • The skyline problem
        • Top k frequent elements
        • Town judge
        • Trapping rain water
        • Two sum II
        • Ugly number II
        • Uncrossed lines
        • Unique binary search trees II
        • Valid parentheses
        • Validate binary tree nodes
        • Validate ip address
        • Walking robot simulation
        • Wildcard matching
        • Word break
        • Word break II
        • Word ladder
        • Word search
        • Word search II
        • Zigzag conversion
        • 3d printing
        • Combo-layer hybrid keymap
        • family
        • keyboard
        • Note for Dina - quartz
        • skiing
    Home

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    Tag: insane

    Tag: insane

    13 items with this tag.

    • Apr 27, 2025

      The skyline problem

      • review
      • hard
      • insane
    • Nov 12, 2024

      Basic calculator II

      • review
      • hard
      • insane
    • Nov 05, 2024

      Median of two sorted arrays

      • review
      • insane
      • hard
      • niche
    • Oct 02, 2024

      Basic calculator

      • review
      • hard
      • insane
    • Sep 29, 2024

      Shortest palindrome

      • review
      • hard
      • insane
      • niche
    • Sep 25, 2024

      Different ways to add parentheses

      • review
      • hard
      • insane
    • Sep 24, 2024

      Maximize score of numbers in ranges

      • review
      • hard
      • insane
    • Sep 12, 2024

      Find the closest palindrome

      • review
      • hard
      • insane
    • Aug 27, 2024

      Sudoku solver

      • review
      • hard
      • insane
    • Aug 26, 2024

      Minimum cost to convert string II

      • review
      • hard
      • insane
    • Jul 23, 2024

      Race car

      • review
      • hard
      • insane
    • May 15, 2024

      Arithmetic slices II

      • review
      • hard
      • insane
    • May 15, 2024

      Constrained subsequence sum

      • review
      • hard
      • insane

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