Citadel Hash Table Questions

21 hash table problems asked at Citadel interviews

Medium (14)Hard (7)

Questions

Title	Difficulty	Acceptance	Frequency
Delete and Earn	Medium	57.1%	93.4%
LFU Cache	Hard	48.6%	79.8%
Maximum Total Damage With Spell Casting	Medium	45.0%	76.4%
LRU Cache	Medium	46.8%	74.4%
First Completely Painted Row or Column	Medium	63.9%	72.3%
Longest String Chain	Medium	62.8%	70.0%
Insert Delete GetRandom O(1)	Medium	55.3%	64.5%
Length of Longest Subarray With at Most K Frequency	Medium	56.4%	61.1%
Sudoku Solver	Hard	65.4%	61.1%
Group Anagrams	Medium	72.2%	57.1%
Design Excel Sum Formula	Hard	39.9%	45.9%
Implement Trie (Prefix Tree)	Medium	69.2%	45.9%
Letter Combinations of a Phone Number	Medium	65.5%	45.9%
Insert Delete GetRandom O(1) - Duplicates allowed	Hard	36.4%	37.1%
Word Ladder II	Hard	27.5%	37.1%
Max Points on a Line	Hard	30.3%	37.1%
Reorganize String	Medium	56.8%	37.1%
Subarray Sums Divisible by K	Medium	56.1%	37.1%
Bus Routes	Hard	47.1%	37.1%
Open the Lock	Medium	61.2%	37.1%
Integer to Roman	Medium	70.5%	37.1%

Showing 21 questions