The code you provided is using JavaScript to extract numbers from a string and then convert them to numeric values. Here's a step-by-step breakdown of how it works:

1. input.match(/[+-]?\d+(\.\d+)?/g): The match method is used with a regular expression to find all matches of a pattern in a string. The regular expression /[+-]?\d+(\.\d+)?/g is designed to match numbers. It looks for an optional plus or minus sign ([+-]?), followed by one or more digits (\d+), optionally followed by a decimal point and more digits ((\.\d+)?). The g flag at the end of the regular expression makes it search globally through the string, rather than stopping after the first match.

2. .map(Number): The map method is used to create a new array by applying a function to each element in the original array. In this case, the Number function is used to convert each string in the array to a number. The Number function takes a single argument and attempts to convert it to a number. If the argument cannot be converted to a number, it returns NaN.

However, this code does not sort the numbers. To sort the numbers, you would need to add an additional step using the sort method, like so: .sort((a, b) => a - b). This would sort the numbers in ascending order. If you want to sort them in descending order, you can use .sort((a, b) => b - a).