Learn Functional Programming by Building a Spreadsheet - Step 104

JavaScript
1

Tell us what’s happening:

I have tried several different approaches to solve this problem, including a for loop, .map() method, .filter() method, but nothing seems to work, and I’m seeing the message : “Your nodupes function should remove all duplicate values from the array.” What am I doing wrong?

Your code so far

<!-- file: index.html -->


/* file: styles.css */


/* file: script.js */
// User Editable Region

const spreadsheetFunctions = {
  sum,
  average,
  median,
  even: nums => nums.filter(isEven),
  someeven: nums => nums.some(isEven),
  everyeven: nums => nums.every(isEven),
  firsttwo: nums => nums.slice(0, 2),
  lasttwo: nums => nums.slice(-2),
  has2: nums => nums.includes(2),
  increment: nums => nums.map(num => num + 1),
  random: ([x, y]) => Math.floor(Math.random() * y + x),
  range: nums => range(...nums),
  nodupes: nums => nums.forEach(i => nums[i] === nums[i + 1] ? nums.splice(i, 1) : nums),
}

// User Editable Region

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36

Challenge Information:

Learn Functional Programming by Building a Spreadsheet - Step 104

2

You can do it in multiple ways, but don’t change the array you are iterating over