Consecutive Ascending Numbers

Write a function that will return True if a given string (divided and grouped into a size) will contain a set of consecutive ascending numbers, otherwise, return False.

Examples

is_ascending("123124125") ➞ True
# Contains a set of consecutive ascending numbers
# if grouped into 3's : 123, 124, 125

is_ascending("101112131415") ➞ True
# Contains a set of consecutive ascending numbers
# if grouped into 2's : 10, 11, 12, 13, 14, 15

is_ascending("32332432536") ➞ False
# Regardless of the grouping size, the numbers can't be consecutive.

is_ascending("326325324323") ➞ False
# Though the numbers (if grouped into 3's) are consecutive but descending.

is_ascending("666667") ➞ True
# Consecutive numbers: 666 and 667.

Notes

• A number can consist of any number of digits, so long as the numbers are adjacent to each other, and the string has at least two of them.
• A recursive version of this challenge can be found via this link.