Problem Statement |
| | A positive integer is called a mega cool number if its digits form an arithmetic progression. An arithmetic progression is a sequence of numbers in which the difference between any two consecutive numbers is the same. Return the number of mega cool numbers between 1 and N, inclusive.
|
| |
Definition |
| | | Class: | MegaCoolNumbersEasy | | Method: | count | | Parameters: | int | | Returns: | int | | Method signature: | int count(int N) | | (be sure your method is public) |
|
| |
|
| |
Constraints |
| - | N will be between 1 and 1,000, inclusive. |
| |
Examples |
| 0) | |
| | | Returns: 1 | | The only mega cool number not greater than 1 is 1. |
|
|
| 1) | |
| | | Returns: 99 | | All numbers between 1 and 99 are mega cool. |
|
|
| 2) | |
| | |