I need to understand the logic for solving this problem

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Hi everyone, If you have successfully completed this task - can you please share your solution and explain the logic you thought of? I just can't understand how to approach this task. Thank you!

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Attila

Level 25

24 February 2020, 19:55

public static void main(String[] args) throws Exception {
    //write your code here
    Scanner scanner = new Scanner(System.in);
    double t = scanner.nextDouble();
    t = t % 5;

    if ( t < 3)
        System.out.println("green");
    else if (t < 4)
        System.out.println("yellow");
    else
        System.out.println("red");

}

Attila

Level 25

24 February 2020, 19:55

useful

Use: t = t % 5; This gives you the remainder after dividing by 5. Since 5 Minutes is the whole Cycle of red, yellow green, the remainder is enough to decide which light should be on.