Tag: a-hash

All the articles with the tag "a-hash".

• LeetCode 208 Implement Trie (Prefix Tree)

  25 Aug, 2026

  Solutions for LeetCode 208, medium, tags: hash table, string, design, trie, companies: pinterest.

• LeetCode 355 Design Twitter

  16 Aug, 2026

  Solutions for LeetCode 355, medium, tags: hash table, linked list, design, heap.

• LeetCode 1048 Longest String Chain

  8 Aug, 2026

  Solutions for LeetCode 1048, medium, tags: array, hash table, two pointers, string, dynamic programming.

• LeetCode 2131 Longest Palindrome by Concatenating Two Letter Words

  29 Jun, 2026

  Solutions for LeetCode 2131, medium, tags: array, hash table, string, greedy, counting.

• LeetCode 752 Open the Lock

  26 Jun, 2026

  Solutions for LeetCode 752, medium, tags: array, hash table, string, breadth-first search.

• LeetCode 380 Insert Delete GetRandom O(1)

  12 Jun, 2026

  Solutions for LeetCode 380, medium, tags: array, hash table, math, design, randomized.