An integer has sequential digits if and only if each digit in the number is one more than the previous digit.
Return a sorted list of all the integers in the range [low,
high] inclusive that have sequential digits.
Example 1:
Input: low = 100, high = 300 Output: [123,234]
Example 2:
Input: low = 1000, high = 13000 Output: [1234,2345,3456,4567,5678,6789,12345]
Constraints:
10 <= low <= high <= 10^9