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119 lines
4.0 KiB
Markdown
119 lines
4.0 KiB
Markdown
---
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id: 69d03e549613fbdbe21d11e0
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title: "Challenge 271: Medication Reminder"
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challengeType: 28
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dashedName: challenge-271
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---
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# --description--
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Given an array of medications and a string representing the current time, return the next medication you need to take and how long until you need to take it.
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- Each medication is in the format `[name, lastTaken]`, where `name` is the name of the medication and `lastTaken` is the time it was last taken.
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- All given times will be in `"HH:MM"` (24-hour) format.
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Use the following medication schedule:
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| Name | Schedule |
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| - | - |
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| Deployxitrin | 08:00, 16:00 |
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| Debuggamanizole | 07:00, 13:00, 21:00 |
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| Mergeflictamine | every 4 hours |
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Return a string in the format `"{name} in Hh Mm"`. For example, `"Debuggamanizole in 2h 0m"` or `"Deployxitrin in 1h 5m"`.
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# --hints--
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "10:00"]], "11:00")` should return `"Debuggamanizole in 2h 0m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "10:00"]], "11:00"), "Debuggamanizole in 2h 0m");
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```
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "13:00"], ["Mergeflictamine", "14:00"]], "14:55")` should return `"Deployxitrin in 1h 5m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "13:00"], ["Mergeflictamine", "14:00"]], "14:55"), "Deployxitrin in 1h 5m");
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```
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "13:00"], ["Mergeflictamine", "14:00"]], "17:15")` should return `"Mergeflictamine in 0h 45m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "13:00"], ["Mergeflictamine", "14:00"]], "17:15"), "Mergeflictamine in 0h 45m");
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```
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "09:00"]], "12:59")` should return `"Debuggamanizole in 0h 1m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "09:00"]], "12:59"), "Debuggamanizole in 0h 1m");
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```
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "21:00"], ["Mergeflictamine", "03:00"]], "06:55")` should return `"Debuggamanizole in 0h 5m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "21:00"], ["Mergeflictamine", "03:00"]], "06:55"), "Debuggamanizole in 0h 5m");
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```
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`medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "07:30"]], "08:00")` should return `"Mergeflictamine in 3h 30m"`.
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```js
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assert.equal(medicationReminder([["Deployxitrin", "08:00"], ["Debuggamanizole", "07:00"], ["Mergeflictamine", "07:30"]], "08:00"), "Mergeflictamine in 3h 30m");
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```
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# --seed--
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## --seed-contents--
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```js
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function medicationReminder(medications, currentTime) {
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return medications;
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}
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```
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# --solutions--
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```js
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function medicationReminder(medications, currentTime) {
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const schedule = {
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Deployxitrin: { type: 'fixed', times: ['08:00', '16:00'] },
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Debuggamanizole: { type: 'fixed', times: ['07:00', '13:00', '21:00'] },
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Mergeflictamine: { type: 'interval', hours: 4 }
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};
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const toMinutes = t => {
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const [h, m] = t.split(':').map(Number);
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return h * 60 + m;
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};
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const current = toMinutes(currentTime);
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let earliest = Infinity;
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let nextMed = '';
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for (const [name, lastTaken] of medications) {
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const med = schedule[name];
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let nextDue;
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if (med.type === 'fixed') {
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const futureTimes = med.times
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.map(toMinutes)
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.filter(t => t > current);
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if (futureTimes.length === 0) continue;
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nextDue = Math.min(...futureTimes);
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} else {
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nextDue = toMinutes(lastTaken) + med.hours * 60;
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}
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const diff = nextDue - current;
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if (diff > 0 && diff < earliest) {
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earliest = diff;
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nextMed = name;
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}
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}
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const h = Math.floor(earliest / 60);
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const m = earliest % 60;
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return `${nextMed} in ${h}h ${m}m`;
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}
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```
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