【剑指Offer】43. 从 1 到 n 整数中 1 出现的次数
NowCoder解题思路public class Solution { public int NumberOf1Between1AndN_Solution(int n) { int cnt = 0; for (int m = 1; m <= n; m *= 10) { int a = n / m, b = n % m; //cnt += (a + 8) / 10 * m + (a % 10 == 1 ?
