C++ | Leetcode C++题解之第400题第N位数字
题目：
题解：
class Solution {
public:int findNthDigit(int n) {int d = 1, count = 9;while (n > (long) d * count) {n -= d * count;d++;count *= 10;}int index = n - 1;int start = (int) pow(10, d - 1);int num = start + index / d;int digitIndex = index % d;int digit = (num / (int) (pow(10, d - digitIndex - 1))) % 10;return digit;}
};