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Deliveroo LeetCode Questions

6 questions all-time · 2 easy · 2 medium · 2 hard
# Problem Difficulty Frequency Acceptance
1Design Authentication Manager
Hash Table, Linked List, Design, Doubly-Linked List
Medium
100
0.6%
2Find Words Containing Character
Array, String
Easy
98
0.9%
3Logger Rate Limiter
Hash Table, Design, Data Stream
Easy
73
0.8%
4Vertical Order Traversal of a Binary Tree
Hash Table, Tree, Depth-First Search, Breadth-First Search, Sorting, Binary Tree
Hard
65
0.5%
5Count Number of Nice Subarrays
Array, Hash Table, Math, Sliding Window, Prefix Sum
Medium
65
0.8%
6Remove Invalid Parentheses
String, Backtracking, Breadth-First Search
Hard
65
0.5%

How to read this list

The tabs at the top split the questions by how recently people said they were asked in interviews. "Last 30 Days" is the past month, "Last 3 Months" is the past quarter, and so on. "All Time" is every question on record for this company.

Frequency is a score from 0 to 100 for how often a question showed up in that time window. A higher number means it came up more often, so the list starts with the most common questions first. Acceptance is the share of submissions that pass on LeetCode. Click any question to open it on LeetCode.