FastPrep
Problem · Math

Ashley Love Numbers

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Problem statement

Count integers in the inclusive range [left, right] whose decimal representation contains no repeated digit.

Function

countLoveNumbers(left: int, right: int) → int

Examples

Example 1

left = 1right = 20return = 19

Every value except 11 has no repeated decimal digit.

Constraints

  • 0 <= left <= right <= 1000000

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public int countLoveNumbers(int left, int right) {
  // Write your code here.
}
left1
right20
expected19
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