Filter a String

Mubashir needs your help to count uppercase letters, lowercase letters, numbers and special characters in a given string.

Create a function which takes a string txt and returns a list of numbers with count of uppercase letters, lowercase letters, numbers and special characters.

Examples

filterString("*$(#Mu12bas43hiR%@*!") ➞ [2, 6, 4, 8]
// 2 uppercase letters
// 6 lowercase letters
// 4 numbers
// 8 special characters

filterString("^^Sample^^%$#12379") ➞ [1, 5, 5, 7]

filterString("**Airforce1**") ➞ [1, 7, 1, 4]

Notes

N/A