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DSA Problems

13 problems · master the patterns that show up in every interview.

Daily set · 3 curated problems
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Arrays0/14
Strings0/12
Two Pointers0/11
Sliding Window0/11
Binary Search0/11
Stacks & Queues0/11
Linked Lists0/12
Trees0/13
Tries0/6
Heaps & Priority Queues0/10
Backtracking0/9
Graphs0/13
Greedy0/10
Dynamic Programming0/16
Bit Manipulation0/10
TopicProblemDifficulty
  • GraphsNumber of Islands
    GraphsMedium
    Medium
  • GraphsMax Area of Island
    GraphsMedium
    Medium
  • GraphsFlood Fill
    GraphsEasy
    Easy
  • GraphsRotting Oranges
    GraphsMedium
    Medium
  • GraphsWalls and Gates
    GraphsMedium
    Medium
  • GraphsCourse Schedule
    GraphsMedium
    Medium
  • GraphsCourse Schedule II
    GraphsMedium
    Medium
  • GraphsGraph Valid Tree
    GraphsMedium
    Medium
  • GraphsNumber of Connected Components in an Undirected Graph
    GraphsMedium
    Medium
  • GraphsRedundant Connection
    GraphsMedium
    Medium
  • GraphsNetwork Delay Time
    GraphsMedium
    Medium
  • GraphsCheapest Flights Within K Stops
    GraphsMedium
    Medium
  • GraphsMin Cost to Connect All Points
    GraphsMedium
    Medium