AlgoNinjutsu
  • Difficulty
    • Easy
    • Medium
    • Hard
  • Categories
    • Arrays
    • Strings
    • Linked Lists
    • Hashmaps
    • Hashsets
    • Graphs
    • Tries
    • Heaps
    • Trees
    • Stacks
    • Queues
    • DP
    • Backtracking
    • Math
    • Binary
    • Binary Search
    • DFS
    • BFS
    • Two Pointers
    • Sliding Window
    • Prefix Sum
    • Topological Sort
  • Random
  • All Questions

21 Questions




Merge Two Sorted Lists

easy

linked
lists





Reverse Linked List

easy

linked
lists





Middle of the Linked List

easy

linked
lists



two
pointers


Linked List Cycle

easy

linked
lists



two
pointers


Add Two Numbers

medium

linked
lists



math

Palindrome Linked List

easy

linked
lists



two
pointers


Remove Linked List Elements

easy

linked
lists





Remove Duplicates from Sorted List

easy

linked
lists



two
pointers


Reorder List

medium

linked
lists



two
pointers


Linked List Cycle II

medium

linked
lists



two
pointers


Odd Even Linked List

medium

linked
lists





Rotate List

medium

linked
lists





Sort List

medium

linked
lists



two
pointers


Swap Nodes in Pairs

medium

linked
lists





Reverse Linked List II

medium

linked
lists





Reverse Nodes in K-Group

hard

linked
lists





Merge K Sorted Lists

hard

linked
lists



heaps

LRU Cache

medium

linked
lists



hashmaps

Remove Duplicates from Sorted List II

medium

linked
lists



two
pointers


Add Two Numbers II

medium

linked
lists



math

Copy List with Random Pointer

medium

linked
lists



DFS








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