Head and tail tally

Question

Head and tail tally

I've been working on coding a heads or tails system in JavaScript, but I've hit a roadblock. I am struggling to find a solution.

Here is what I have so far:

const userInput = prompt("Heads or Tails?");
const arr = [0, 0, 1, 1, 1, 0, 1, 0, 1];

arr["Result"] = "heads";
let headCount = 0, tailCount = 0;

for (let i = 0; i < arr.length; i++) {
    if (arr["Result"] === "heads")
        headCount += arr[i];
    else
        tailCount += arr[i];
}

alert("Heads: " + headCount + " " + "Tails: " + tailCount);

I'm struggling to figure out where I went wrong. Any insights or advice would be greatly appreciated.

Thank you

javascript arrays alert var

Answer 1

Answer №1

It seems like there might be some confusion with the logic here.

var arr = [0, 0, 1, 1, 1, 0, 1, 0, 1];

So, if 0 represents heads and 1 represents tails, is that correct?

arr["Result"] = "heads";

This line sets the property Result on the array arr to be "heads", but it may not be necessary.

let arr = [0, 0, 1, 1, 1, 0, 1, 0, 1];

let headCount = 0,
  tailCount = 0;

for (let i = 0; i < arr.length; i++) {
  if (arr[i] === 0)
    headCount += 1;
  else
    tailCount += 1;
}

console.log("Heads: " + headCount + " " + "Tails: " + tailCount);

This code snippet will loop through the array and update the counting variables based on the values found in the array.

Answer 2

It seems like there might be some confusion with the logic here.

var arr = [0, 0, 1, 1, 1, 0, 1, 0, 1];

So, if 0 represents heads and 1 represents tails, is that correct?

arr["Result"] = "heads";

This line sets the property Result on the array arr to be "heads", but it may not be necessary.

let arr = [0, 0, 1, 1, 1, 0, 1, 0, 1];

let headCount = 0,
  tailCount = 0;

for (let i = 0; i < arr.length; i++) {
  if (arr[i] === 0)
    headCount += 1;
  else
    tailCount += 1;
}

console.log("Heads: " + headCount + " " + "Tails: " + tailCount);

This code snippet will loop through the array and update the counting variables based on the values found in the array.

Answer 3

Answer №2

Building on the insights provided by Eric H's response, another approach is to leverage Array.reduce() and utilize array destructuring for achieving the same outcome:

const array = [0, 0, 1, 1, 1, 0, 1, 0, 1];

const [headsCount, tailsCount] = array.reduce((result, number) => {
  result[number] += 1;
  
  return result;
}, [0, 0]);


console.log("Heads: " + headsCount + " " + "Tails: " + tailsCount);

Answer 4

Building on the insights provided by Eric H's response, another approach is to leverage Array.reduce() and utilize array destructuring for achieving the same outcome:

const array = [0, 0, 1, 1, 1, 0, 1, 0, 1];

const [headsCount, tailsCount] = array.reduce((result, number) => {
  result[number] += 1;
  
  return result;
}, [0, 0]);


console.log("Heads: " + headsCount + " " + "Tails: " + tailsCount);

Answer 5

Answer №3

const flips = [0, 0, 1, 1, 1, 0, 1, 0, 1];

let heads = 0;
let tails = 0;

flips.forEach(flip => flip ? heads += 1 : tails += 1)

console.log(
  `Heads: ${heads}  
Tails: ${tails}`)

Answer 6

const flips = [0, 0, 1, 1, 1, 0, 1, 0, 1];

let heads = 0;
let tails = 0;

flips.forEach(flip => flip ? heads += 1 : tails += 1)

console.log(
  `Heads: ${heads}  
Tails: ${tails}`)

Head and tail tally

Answer №1

Answer №2

Answer №3

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