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
Go 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
func meanDowntime(durations []int) int {
}Worked examples
| Call | Result |
|---|---|
meanDowntime([]int{10, 20, 30}) | 20 |
meanDowntime([]int{5, 6}) | 5 |
meanDowntime([]int{}) | 0 |
meanDowntime([]int{100}) | 100 |
Hint
Sum then divide by the length; guard the empty case.
Reference solution in Go
func meanDowntime(durations []int) int {
if len(durations) == 0 {
return 0
}
s := 0
for _, d := range durations {
s += d
}
return s / len(durations)
}