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95 lines
4.1 KiB
Markdown
95 lines
4.1 KiB
Markdown
---
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id: 6a0dcd03ee4e68698080ef67
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title: "Challenge 303: Roommates"
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challengeType: 29
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dashedName: challenge-303
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---
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# --description--
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Given an array of people and their roommate group, return the room assignments for a hotel stay using the following rules:
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- Each person has a `name` and a `group` property:
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```json
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[
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{ "name": "Alice", "group": "A" },
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{ "name": "Bob", "group": "B" },
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{ "name": "Carol", "group": "A" }
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]
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```
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- People can only share a room with someone from the same group and are paired in the order they are given.
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- Return an array of strings with names separated by `" and "` for a shared room, and just the name for a solo room. Names must appear in the order they were paired. For the example above, return `["Alice and Carol", "Bob"]`.
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# --hints--
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`get_roommates([{ "name": "Alice", "group": "A" }, { "name": "Bob", "group": "B" }, { "name": "Carol", "group": "A" }])` should return `["Alice and Carol", "Bob"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sorted(get_roommates([{"name": "Alice", "group": "A"}, {"name": "Bob", "group": "B"}, {"name": "Carol", "group": "A"}])), sorted(["Alice and Carol", "Bob"]))`)
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}})
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```
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`get_roommates([{ "name": "John", "group": "C" }, { "name": "Julia", "group": "C" }, { "name": "Jim", "group": "C" }])` should return `["John and Julia", "Jim"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sorted(get_roommates([{"name": "John", "group": "C"}, {"name": "Julia", "group": "C"}, {"name": "Jim", "group": "C"}])), sorted(["John and Julia", "Jim"]))`)
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}})
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```
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`get_roommates([{ "name": "Adam", "group": "D" }, { "name": "Abraham", "group": "E" }, { "name": "Austin", "group": "E" }, { "name": "Augustus", "group": "D" }, { "name": "Angelica", "group": "D" }, { "name": "Aaron", "group": "E" }])` should return `["Adam and Augustus", "Angelica", "Abraham and Austin", "Aaron"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sorted(get_roommates([{"name": "Adam", "group": "D"}, {"name": "Abraham", "group": "E"}, {"name": "Austin", "group": "E"}, {"name": "Augustus", "group": "D"}, {"name": "Angelica", "group": "D"}, {"name": "Aaron", "group": "E"}])), sorted(["Adam and Augustus", "Angelica", "Abraham and Austin", "Aaron"]))`)
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}})
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```
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`get_roommates([{ "name": "Frank", "group": "A" }, { "name": "Emitt", "group": "B" }, { "name": "Daria", "group": "F" }, { "name": "Charles", "group": "D" }, { "name": "Bailey", "group": "A" }, { "name": "Albert", "group": "F" }])` should return `["Frank and Bailey", "Emitt", "Daria and Albert", "Charles"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sorted(get_roommates([{"name": "Frank", "group": "A"}, {"name": "Emitt", "group": "B"}, {"name": "Daria", "group": "F"}, {"name": "Charles", "group": "D"}, {"name": "Bailey", "group": "A"}, {"name": "Albert", "group": "F"}])), sorted(["Frank and Bailey", "Emitt", "Daria and Albert", "Charles"]))`)
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}})
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```
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`get_roommates([{ "name": "Kevin", "group": "A" }, { "name": "Yuri", "group": "A" }, { "name": "Hugo", "group": "B" }, { "name": "Violet", "group": "A" }, { "name": "Brett", "group": "A" }, { "name": "Wayne", "group": "B" }])` should return `["Kevin and Yuri", "Violet and Brett", "Hugo and Wayne"]`.
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```js
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({test: () => { runPython(`
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from unittest import TestCase
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TestCase().assertEqual(sorted(get_roommates([{"name": "Kevin", "group": "A"}, {"name": "Yuri", "group": "A"}, {"name": "Hugo", "group": "B"}, {"name": "Violet", "group": "A"}, {"name": "Brett", "group": "A"}, {"name": "Wayne", "group": "B"}])), sorted(["Kevin and Yuri", "Violet and Brett", "Hugo and Wayne"]))`)
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}})
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```
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# --seed--
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## --seed-contents--
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```py
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def get_roommates(people):
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return people
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```
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# --solutions--
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```py
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def get_roommates(people):
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groups = {}
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for person in people:
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groups.setdefault(person["group"], []).append(person["name"])
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result = []
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for members in groups.values():
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for i in range(0, len(members), 2):
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result.append(" and ".join(members[i:i + 2]))
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return result
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```
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