Please use matlab, thank you. Or just a little help dont have to solve it all

Kaprekar's Constant A Brief Introduction to Number Theory D. R. Kaprekar (1905-1986) was an Indian mathematician, "who described several classes of natural numbers, including the Kaprekar, Harshad, and Self Numbers." He also discovered the Kaprekar Constant, which is the focus of this lab, and is the result of the following process: (1) Choose any four-digit number with at least two unique digits (ie no 2222... 9999) 8974 (2) Rearrange the digits in the number in descending and ascending order, forming two new 9874, 4789 (3) Subtract the smaller number from the larger number, resulting in a new four-digit number: 9874-4789 5085 (4) Using the new number resulting in step 3, repeat steps 2-3 for a maximum of seven Note: The result of step 3 may sometimes be three-digit nurher. such as 999, if. for example, you start with the numher 1000. For the sake of the process, this may be vicwed as having a zero in the thousands place: 0999. This way, when you repeat sep 2 you will subtract 0999 rom 9990 to get 891 Kaprekar Path of the Integer 8002 10000 443 7000 6000 5000 4000 174 4176 1000