#3855

Sum of K-Digit Numbers in a Range

candidate master · 1440 · lc hard +32 · 49.9% accepted · 37 likes · top 37%

Description

Given three integers l, r, and k, construct all possible k-digit integers where each digit is independently chosen from the range [l, r] (leading zeros are allowed when 0 is in the range). Return the sum of all such integers modulo 10⁹ + 7.

Code

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class Solution:
    def sumOfNumbers(self, l: int, r: int, k: int) -> int:

class Solution:
    def sumOfNumbers(self, l: int, r: int, k: int) -> int: