How should I practice E-commerce Notification Router?

Start by reading the full statement, solve the visible examples, then compare the pattern against related Amazon phone screen problems in FastPrep.

Is E-commerce Notification Router associated with Amazon?

FastPrep tags this as a Amazon phone screen coding practice problem when the problem catalog has that company and stage context.

Problem · Array

E-commerce Notification Router

● Easy

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Problem statement

Implement the routing decision for a batch of e-commerce notifications. For notification i, preferredChannels[i] is the user's preferred channel and priorities[i] is either NORMAL or URGENT.

The problem statement continues

Pro

Examples

Example 1

preferredChannels = ["EMAIL","SMS","PUSH"]priorities = ["NORMAL","URGENT","NORMAL"]return = [["EMAIL"],["EMAIL","SMS","PUSH"],["PUSH"]]

The normal notifications use their preferences, while the urgent notification is sent through all three routing channels.

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