Python | Leetcode Python题解之第400题第N位数字
题目：
题解：
class Solution:
def findNthDigit(self, n: int) -> int:
d, count = 1, 9
while n > d * count:
n -= d * count
d += 1
count *= 10
index = n - 1
start = 10 ** (d - 1)
num = start + index // d
digitIndex = index % d
return num // 10 ** (d - digitIndex - 1) % 10