Problems › JavaScript › events
How many openings in the coming weeks
A recurring weekly pattern marks which of the seven weekdays are open. Count the total openings over a number of full weeks.
- The pattern list has exactly 7 booleans, one per weekday starting Monday.
- Each true entry is one opening per week.
- Multiply the weekly count by the number of weeks.
- Zero weeks gives zero openings.
weeklyOpenings(pattern: list<bool>, weeks: int) → int
Where you start
function weeklyOpenings(pattern, weeks) {
}Worked examples
| Call | Result |
|---|---|
weeklyOpenings([true,false,true,false,true,false,false], 4) | 12 |
weeklyOpenings([false,false,false,false,false,false,false], 10) | 0 |
weeklyOpenings([true,true,true,true,true,true,true], 2) | 14 |
weeklyOpenings([true,false,false,false,false,false,false], 0) | 0 |
Hint
Count the true entries in the pattern once, then multiply.
Reference solution in JavaScript
function weeklyOpenings(pattern, weeks) {
let perWeek = 0;
for (const d of pattern) if (d) perWeek++;
return perWeek * weeks;
}