题目
Given an integer number n, return the difference between the product of its digits and the sum of its digits.
Example 1:
Input: n = 234 Output: 15 Explanation: Product of digits = 2 * 3 * 4 = 24 Sum of digits = 2 3 4 = 9 Result = 24 - 9 = 15
Example 2:
Input: n = 4421 Output: 21 Explanation: Product of digits = 4 * 4 * 2 * 1 = 32 Sum of digits = 4 4 2 1 = 11 Result = 32 - 11 = 21
Constraints:
代码语言：javascript复制1 <= n <= 10^5解析
题目通俗易懂，不多做解释。 解题关键就在于获取到一个数的每位数—>取余10再除以10，重复操作即可 如123 123=3 123/10=12 12=2 12/10=1 1=1
答案
代码语言：javascript复制class Solution {
public int subtractProductAndSum(int n) {
int product=1;
int sum=0;
while(n>0){
int tmp=n;
product*=tmp;
sum =tmp;
n/=10;
}
return product-sum;
}
}
评论区似乎没有其他更好的解法。
