How to check two integer has the same digit but in different position

Question

Let say:
Number 1 : 7866
Number from user: 6876

This is consider "same" even tho different position.

How can i solve this issue?

Answer 1

Convert both to strings and sort those 2 . Now if both are equal then they are considered same else no.

ex:
7899, 9879
Strings "7895", "9875"
Sort : "5789", "5789" both are equal hence same..

or find permutations on one number, comapare each to the required number. if match stop.
hope it helps...