Created
October 20, 2019 07:24
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| int root(int n) { | |
| if (n >= 10) { | |
| int s = 0; | |
| while (n > 0) { | |
| s += n % 10; | |
| n /= 10; | |
| } | |
| return root(s); | |
| } | |
| return n; | |
| } |
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