题解 | #整数中1出现的次数(从1到n整数中1出现的次数)#
整数中1出现的次数(从1到n整数中1出现的次数)
http://www.nowcoder.com/practice/bd7f978302044eee894445e244c7eee6
虽然很low,但是直接嗷
public int NumberOf1Between1AndN_Solution(int n) {
int i = 1;
int res = 0;
while (i <= n){
int cur = (i + "a").split("1").length - 1;
res += cur;
i++;
}
return res;
} 
