Skip to content

Instantly share code, notes, and snippets.

@hadijaveed

hadijaveed/difference.js

Created October 14, 2017 18:53
Show Gist options
  • Save hadijaveed/86251df37700527f5c70e70dff66b209 to your computer and use it in GitHub Desktop.
Save hadijaveed/86251df37700527f5c70e70dff66b209 to your computer and use it in GitHub Desktop.
Download ZIP
Find missing element from 2nd Array
Raw
difference.js
function differenceFromSecondArray(arr1, arr2) {
let arr1Map = arr1.reduce((acc, curr) => {
return { ...acc, [curr]: 1 }
}, {})
return arr2.reduce((acc, curr) => arr1Map.hasOwnProperty(curr) ? acc : acc.concat(curr), [])
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment