Step 1: Divide the number into separate digits:
01113 => 0 1 1 1 3
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
0 to 1 = 1
1 to 1 = 0
1 to 1 = 0
1 to 3 = 2
3 to 0 = 3
Step 3: Combine the filters to a string:
1 0 0 2 3 = 10023