Distinguish Permit Requirement Outcomes

Problem Description

At Permitflow, permit statuses are determined by a set of business rules that analyze a list of active conditions. A permit can be in one of three states: APPROVED, REJECTED, or PENDING.

You are tasked with building a PermitProcessor class that evaluates a permit based on a collection of rules. Each rule has a required_conditions (a set of strings) and an outcome (the resulting status).

Requirements

1. match_rules(permit_conditions): Given a list of strings representing the current state of a permit, return the outcome based on these priorities:
   • If any rule's required_conditions are a subset of the permit_conditions, that rule is a potential match.
   • If multiple rules match, precedence is defined as: REJECTED > APPROVED > PENDING.
   • If no rules match, the permit defaults to PENDING.

Interface

class PermitProcessor:
    def __init__(self, rules):
        # rules is a list of dicts: {'conditions': {'a', 'b'}, 'outcome': 'REJECTED'}
        self.rules = rules

    def get_status(self, permit_conditions):
        # returns 'APPROVED', 'REJECTED', or 'PENDING'
        pass

Examples

Example 1 Input: rules = [{'conditions': {'zoning'}, 'outcome': 'APPROVED'}, {'conditions': {'violation'}, 'outcome': 'REJECTED'}] permit_conditions = {'zoning', 'violation'} Output: 'REJECTED' (Since REJECTED has higher precedence than APPROVED).

Example 2 Input: rules = [{'conditions': {'paid'}, 'outcome': 'APPROVED'}] permit_conditions = {'submitted'} Output: 'PENDING' (No rule matched the submitted conditions).

Constraints

• rules length: 0 to 1000.
• permit_conditions length: 0 to 50.
• Precedence mapping: {'REJECTED': 2, 'APPROVED': 1, 'PENDING': 0}.