Name: The power of reduce : Counting letters frequencies.
Rating: 4.3 (686 reviews)
Author: artydev

The power of reduce : Counting letters frequencies.

artydev - Oct 20 '23 -

- Dev Community

Reduce is certainly one the most powerfull method we have at our disposal.

Here is a way to count get letters frequencies: Demo

const message = "This is a very short message"

const letters = message.split('').filter(l => l != ' ' );

const frequency = letters.reduce((acc, current) => {
  acc[current] = (acc[current] || 0) + 1
  return acc;
}, {})


console.log(frequency)