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- int digits(int n) {
- int d = 1;
- int temp = n;
- while ((temp /= 10) != 0) {
- d++;
- }
- return d;
- }
- int digitByIndex(int n, int i)
- {
- int d = digits(n) - 1;
- int temp = n;
- while (d != i)
- {
- temp /= 10;
- d--;
- }
- return temp % 10;
- }
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