Help needed on code and logic

Question about the task

Under discussion

The pedestrian traffic light is programmed as follows:
at the beginning of each hour, the green signal is on for three minutes,
then the signal is yellow for one minute,
and then it is red for one minute.
Then the light is green again for three minutes, etc.
Use the keyboard to enter a real number t that represents the number of minutes that have elapsed since the beginning of the hour.
Determine what color the traffic light is at the specified time.
Display the result as follows:
"green" if the light is green,
"yellow" if the light is yellow, and
"red" if the light is red.

Example for 2.5:
green
Example for 3:
yellow
Example for 4:
red
Example for 5:
green

Requirements:

The program should read a real number from the keyboard.
The program should display text on the screen.
If the light is green, display: "green"
If the light is yellow, display: "yellow"
If the light is red, display: "red"

package com.codegym.task.task04.task0416; /* Crossing the road blindly */ import java.io.*; public class Solution { public static void main(String[] args) throws IOException { //write your code here BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); double t = Double.parseDouble(br.readLine()); if (((t-4)%4)==0) System.out.println("red"); else if(((t+1)%4)==0) System.out.println("yellow"); else System.out.println("green"); } }

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Ravi Kumar

Level 5 , Hyderabad, India

11 December 2018, 15:41

verify the condition's mentioned in IF with an example

Zeeshan Abbasi

Level 6 , Rawalpindi, Pakistan

27 September 2018, 01:05

first of all, in line 14 remove your code and type the following String t = br.readLine(); then on next line convert the string t into double like this: Double a = Double.parsedouble(t) now use a as the variable instead of t. Secondly pass the following condition in if statement; (a%5.0>=0&&a%5<3) for green similarly for yellow pass the following condition (a%5.0>=3&&a%5<4) and for red type: else

Ravi Kumar

Level 5 , Hyderabad, India

11 December 2018, 15:39

i think there is no wrong with Line 14..it is absolutely correct. As u can see condition's 3 and 4 and 5 are failing

Zeeshan Abbasi

Level 6 , Rawalpindi, Pakistan

11 July 2019, 21:15

yes i was just makin it easy for them, it is not wrong

Learner

Level 16 , India

19 September 2018, 12:19

Try testing your code with input 3.5. Output should be yellow. 1. Any real number between 3 to 4 (for example: 3.1, 3.2...), excluding 4, should be yellow. 2. Any real number between 4 to 5, excluding 5, should be red.