Average downtime per stop
Support wants a single number for "how long stops usually take", averaged over every recorded event.
- The average is the total duration divided by the count, truncated down.
- With no events at all the average is treated as zero.
MeanDowntime(durations: list<int>) → int
C# needs a compiler and Drill does not host one yet, so this page is the reference rather than an exercise: the problem, worked examples, and the solution in full. To type it out, the same problem runs in Python.
Where you start
public int MeanDowntime(List<int> durations) {
}Worked examples
| Call | Result |
|---|---|
MeanDowntime(new List<int> { 10, 20, 30 }) | 20 |
MeanDowntime(new List<int> { 5, 6 }) | 5 |
MeanDowntime(new List<int> { }) | 0 |
MeanDowntime(new List<int> { 100 }) | 100 |
Hint
Sum then divide by the length; guard the empty case.
Reference solution in C#
public int MeanDowntime(List<int> durations) {
if (durations.Count == 0) return 0;
int sum = 0;
foreach (int d in durations) sum += d;
return sum / durations.Count;
}