Xn0vv3r - 1 month ago 4

C# Question

What's the fastest and easiest to read implementation of calculating the sum of digits?

I.e. Given the number: 17463 = 1 + 7 + 4 + 6 + 3 = 21

Answer

You could do it arithmetically, without using a string:

```
sum = 0;
while (n != 0) {
sum += n % 10;
n /= 10;
}
```

Source (Stackoverflow)

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