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22 lines
461 B
Markdown
22 lines
461 B
Markdown
# [258. Add Digits](https://leetcode.com/problems/add-digits/description/)
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# 思路
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没什么好说的，按照题目的意思，用两个while循环即可。
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# C++
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```
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class Solution {
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public:
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int addDigits(int num) {
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int res = 0;
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while(num >= 10){
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while(num > 0){
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res += (num % 10);
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num /= 10;
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}
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num = res;
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res = 0;
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}
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return num;
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}
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};
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```
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