Traffic Signal Color
You are given an integer timer representing the remaining time (in seconds) on a traffic signal.
The signal follows these rules:
- If
timer == 0, the signal is"Green". - If
timer == 30, the signal is"Orange". - If
30 < timer <= 90, the signal is"Red".
Return the current state of the signal. If none of the above conditions are met, return "Invalid".
Example 1
Input
timer = 60Output
"Red"Since
timer = 60, and 30 < timer <= 90, the answer is "Red".Example 2
Input
timer = 5Output
"Invalid"Since
timer = 5, it does not satisfy any of the given conditions, the answer is "Invalid".Constraints
- 0 <= timer <= 1000