Given an integer n, count the total number of digit 1 appearing in all non-negative integers less than or equal to n.
Example 1:
Input: n = 13 Output: 6
Example 2:
Input: n = 0 Output: 0
Constraints:
0 <= n <= 109
Number of Digit One
Folders and files
| Name | Name | Last commit date | ||
|---|---|---|---|---|
parent directory.. | ||||