ServiceNow Coding Interview Questions
26 ServiceNow coding interview problems with full optimal solutions — 15 easy, 8 medium, 3 hard. Every problem ships with multiple approaches (brute-force first, then the optimal), complexity tables for each, company-specific tips on what an ServiceNow interviewer values, and a FAQ section.
Showing 2 problems of 26
- #19mediumsometimes asked
19. Clone Graph
Deep-copy a connected undirected graph where each node has a value and a list of neighbors. ServiceNow asks this because CMDB cloning — duplicating a service map with all its CI relationships intact — is a real product operation, and the hash-map-keyed-by-original-node pattern is directly applicable.
- #23mediumsometimes asked
23. Word Break
Determine if a string can be segmented into words from a dictionary using dynamic programming. ServiceNow uses this to test DP problem decomposition — the same bottom-up memoization pattern powers their rule-engine tokenization for workflow trigger parsing.