Top 50 currency conversion Interview Questions
The most frequently asked currency conversion questions across all roles and companies, ranked by real interview frequency. Updated daily.
Detect profitable currency cycles by transforming exchange rates with logarithms and finding negative cycles.
AKUNA CAPITAL
Amazon Services
CitadelConvert between currencies by modeling exchange rates as a weighted graph and searching for a valid path.
AmazonUse a weighted graph and BFS to convert amounts across direct and indirect currency exchange rates.
WiseAnswer currency conversion queries by traversing a weighted graph with inverse exchange rates and source-level caching.
AxonBuild a bidirectional currency graph and use DFS to find a conversion rate between two currencies.
RipplingConvert a nonnegative currency amount into correctly formatted dollar and cent words using integer decomposition.
Kumaran SystemsModel currency pairs as a weighted graph and find a source-to-target exchange rate with BFS.
MercorUse graph traversal to find the maximum product exchange rate between two currencies.
CitadelUse a recursive CTE to determine whether each stored string has balanced parentheses, including empty and NULL inputs.
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Return the first row for each unique value, then rank the k most frequent values.
EverlawAnalyze project completion rates and average completion time, then rank projects by delivery performance.
Siemens Digital Industries Software