Build a Traffic Light Sequencer - Build a Traffic Light Sequencer

Curriculum Help
1

Tell us what’s happening:

I am getting the right logs but, task 4 -8 seem impossible to pass. What is wrong with the code?

Your code so far

const config1 = {
  fault: false,
  phases: [
    { color: "green", duration: 5 },
    { color: "yellow", duration: 2 },
    { color: "red", duration: 4 }
  ]
};

const config2 = {
  fault: false,
  phases: [
    { color: "red", duration: 3 },
    { color: "yellow", duration: -2 },
    { color: "green", duration: 6 }
  ]
};

const config3 = {
  fault: true,
  phases: [
    { color: "green", duration: 5 },
    { color: "yellow", duration: 2 },
    { color: "red", duration: 6 }
  ]
};

const config4 = {
  fault: false,
  phases: []
};
function runSequence(config, cycles){
  if(config.phases.length ===0){
    console.log("No phases found")
    return;
  }
  if(!config.phases || config.fault){
    console.log("Faulty phase")
    return;
  }
  for(let t=1; t <= cycles; t++){
for(let i = 0; i<=config.phases.length - 1; i++){
let arrResult = config.phases[i];
if(arrResult.duration <= 0){
console.log("Invalid phase detected")
;
  }
  else{
console.log(`Switching to ${arrResult.color} for ${arrResult.duration} s`)
  }
}
  }
}
runSequence(config2, 1)

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/150.0.0.0 Safari/537.36

Challenge Information:

Build a Traffic Light Sequencer - Build a Traffic Light Sequencer

GitHub Link: freeCodeCamp/curriculum/challenges/english/blocks/lab-traffic-light-sequencer/69b83e35f19ba26ba1fa517a.md at main · freeCodeCamp/freeCodeCamp · GitHub

2

Welcome to the forum @Emmysifire,

Are you logging the exact message asked in the instructions?

You should have a function named generateTimeline with two parameters: config and cycles.

Have you implemented this user story?

Happy coding

3

I have done and passed tasks of generateTimeline function. I have also effected the suggestions that you made but, tasks 4-8 are still pending.

image
image707×648 84.2 KB

4

We cannot test from a screenshot.

Please post your updated code, formatted as follows:

There are two ways you can format your code to make it easier to read and test:

  1. After you copy/paste your code into the editor, select it by dragging your cursor over it then click the (</>) button in the toolbar to automatically wrap your code in backticks. (You can click on the animated demo image below to enlarge it.)

1356×380 401 KB

  1. Manually add three backticks on a new line above your code and on a new line after your code. Note that a backtick is NOT the same as a single quote('). To find the backtick key on your keyboard, see this post.

To see changes to your post as you make them, you can click the (M+) button on the toolbar to bring up the rich text editor:

image
image482×117 7.55 KB

Thank you.

5

Please comment out any function calls before you run the tests.

6

const config1 = {

fault: false,

phases: [

{ color: "green", duration: 5 },

{ color: "yellow", duration: 2 },

{ color: "red", duration: 4 }

]

};

const config2 = {

fault: false,

phases: [

{ color: "red", duration: 3 },

{ color: "yellow", duration: -2 },

{ color: "green", duration: 6 }

]

};

const config3 = {

fault: true,

phases: [

{ color: "green", duration: 5 },

{ color: "yellow", duration: 2 },

{ color: "red", duration: 6 }

]

};

const config4 = {

fault: false,

phases: []

};

function runSequence(config, cycles){

if(config.phases.length ===0){

console.log("No phases found")

return;

}

if(!config.phases){

console.log("Faulted phase!")

return;

}

for(let t=1; t <= cycles; t++){

for(let i = 0; i<=config.phases.length - 1; i++){

let arrResult = config.phases[i];

if(arrResult.duration <= 0){

console.log(“Invalid phase detected”)

;

}

else{

console.log(`Switching to {arrResult.color} for {arrResult.duration} s`)

}

}

}

}

runSequence(config2, 1);

function generateTimeline(config, cycles){

let finalResult=[];

let count = 0;

for(let t=0; t<cycles; t++){

for(let i=0; i< config.phases.length; i++){

  let arrResult = config.phases\[i\].duration;

  count +=arrResult ;

finalResult.push(count)

}

}

return finalResult

}

console.log(generateTimeline(config1, 1))

7

Please follow the directions in my last post about how to format your code for the forum…and post all of your code.

Thank you.

8 
const config1 = {

  fault: false,

  phases: [

    { color: "green", duration: 5 },

    { color: "yellow", duration: 2 },

    { color: "red", duration: 4 }

  ]

};




const config2 = {

  fault: false,

  phases: [

    { color: "red", duration: 3 },

    { color: "yellow", duration: -2 },

    { color: "green", duration: 6 }

  ]

};




const config3 = {

  fault: true,

  phases: [

    { color: "green", duration: 5 },

    { color: "yellow", duration: 2 },

    { color: "red", duration: 6 }

  ]

};




const config4 = {

  fault: false,

  phases: []

};

function runSequence(config, cycles){

  if(config.phases.length ===0){

    console.log("No phases found")

    return;

  }

  if(!config.phases){

    console.log("Faulted phase!")

    return;

  }

  for(let t=1; t <= cycles; t++){

for(let i = 0; i<=config.phases.length - 1; i++){

let arrResult = config.phases[i];

if(arrResult.duration <= 0){

console.log("Invalid phase detected")

;

  }

  else{

console.log(`Switching to ${arrResult.color} for ${arrResult.duration} s`)

  }

}

  }

}

runSequence(config2, 1);

function generateTimeline(config, cycles){

  let finalResult=[];

  let count = 0;

  for(let t=0; t<cycles; t++){

    for(let i=0; i< config.phases.length; i++){

      let arrResult = config.phases[i].duration;

      count +=arrResult ;

finalResult.push(count)

    }

  }

 return finalResult

}

console.log(generateTimeline(config1, 1))
9
  • Log Faulted phase! and stop the simulation early if config.fault is set to true.

Is this instruction implemented correctly?

10

Done. code is working now

Thank you.

11

You’re welcome. Good job!