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Companies
Snowflake
Hash Table
Hash Table
0/20 solved
Longest Substring Without Repeating Characters
MEDIUM
LRU Cache
MEDIUM
Minimum Window Substring
HARD
Word Break
MEDIUM
Construct Binary Tree from Preorder and Inorder Traversal
MEDIUM
Copy List with Random Pointer
MEDIUM
Find All Anagrams in a String
MEDIUM
Task Scheduler
MEDIUM
Happy Number
EASY
Insert Delete GetRandom O(1)
MEDIUM
Design HashMap
EASY
Time Based Key-Value Store
MEDIUM
Snapshot Array
MEDIUM
Sliding Window Median
HARD
Design In-Memory File System
HARD
Count Vowel Substrings of a String
EASY
Word Pattern II
MEDIUM
Minimum Array Length After Pair Removals
MEDIUM
Find the Maximum Length of a Good Subsequence I
MEDIUM
Find the Maximum Length of a Good Subsequence II
HARD