Citadel SRE interviews focus on reliability engineering, incident management, capacity planning, monitoring, and balancing system stability with feature velocity.
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coding
Medium
Verified Question
#1
1. DAG Order Validator
Category: Topological sort coding problem# DAG Order Validator Given a Directed Acyclic Graph (DAG) and a list of nodes, determine if the list represents a valid topological sort...Input: Graph (nodes and edges)
Output: Computed result
coding
Medium
Verified Question
#2
2. Expression Evaluator
Category: String coding problem# Expression Evaluator You need to design and implement an expression evaluator that parses and computes mathematical expressions formatted in...Input: String
Output: Computed result
coding
Medium
Verified Question
#3
3. Knight Moves on Phone
Category: String coding problem# Knight Moves on Phone This problem is split into two parts.Input: List
Output: Integer
coding
Medium
Verified Question
#4
4. Price Change Aggregator
Category: Algorithm coding problem# Price Change Aggregator You are building a system to aggregate price updates from multiple feeds to reconstruct the price history of an asset.Input: List
Output: Computed result
coding
Hard
Verified Question
#5
5. Visit All Cities
Category: Graph coding problem# Visit All Cities You are given a list of airline tickets where each ticket represents a directed edge from a departure airport to an arrival...Input: Graph (nodes and edges)
Output: Computed result
coding
Medium
Verified Question
#6
6. Social Network Friend Suggester
Category: Array coding problemBuild a friend recommendation system for a social network. Given
n users (indexed 0 to n - 1) and a list of existing friendships (undirected...Input: ArrayOutput: Array
coding
Medium
Verified Question
#7
7. Minimum Sum Tree Path
Category: Binary tree coding problem# Minimum Sum Tree PathInput: Binary tree
Output: Computed result
coding
Medium
Verified Question
#8
8. Dial Pad Knight Paths
Category: Algorithm coding problem# Dial Pad Knight PathsInput: Number(s)
Output: Integer
coding
Hard
Verified Question
#9
9. Subsequence Goodness Values
Category: Array coding problem# Subsequence Goodness ValuesInput: Array
Output: Integer
coding
Medium
Verified Question
#10
10. Sliding Window Top K
Category: Sliding window coding problem# Sliding Window Top KInput: Array of integers
Output: Computed result
coding
Medium
Verified Question
#11
11. Price Stream Merger
Category: Heap-based coding problem# Price Stream MergerInput: List
Output: Computed result
coding
Hard
Verified Question
#12
12. Pandigital Addition Count
Category: Algorithm coding problem# Pandigital Addition CountInput: Integer(s)
Output: Computed result
coding
Medium
Verified Question
#13
13. Closest Point Pair
Category: Algorithm coding problem# Closest Point PairInput: List
Output: Integer
coding
Hard
Verified Question
#14
14. Flight Itinerary Planner
Category: Graph coding problem# Flight Itinerary PlannerInput: Graph (nodes and edges)
Output: Computed result
coding
Hard
Verified Question
#15
15. Process Schedule Counter
Category: Algorithm coding problem# Process Schedule CounterInput: List
Output: Integer
coding
Medium
Verified Question
#16
16. [CodeSignal] Common Free Slot
Category: Interval-based coding problem# [CodeSignal] Common Free SlotInput: List
Output: Computed result
coding
Easy
Verified Question
#17
17. [CodeSignal] Stable Server Segments
Category: Array coding problem# [CodeSignal] Stable Server SegmentsInput: Array
Output: Computed result
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