Customer Revenue and Referral Tracking
CodingPhone ScreenSoftware EngineerReported Mar, 2026
Examples
Example 1:
Input: ["CustomerRevenueTracker","insertNewCustomer","insertNewCustomerWithReferral","insertNewCustomerWithReferral","getLowestK","getLowestK"]
[[],[10],[30,0],[50,1],[1,45],[2,45]]
Output: [null,0,1,2,[2],[2,1]]
Explanation:
Example 2:
Input: ["CustomerRevenueTracker","insertNewCustomer","insertNewCustomer","getLowestK","insertNewCustomerWithReferral","getLowestK"]
[[],[20],[20],[2,20],[5,0],[2,20]]
Output: [null,0,1,[0,1],2,[1,0]]
Explanation: