Increasing gaps between consecutive Niven numbers: Difference between revisions
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m (Minor edit to C code) |
m (Minor edit to C++ code) |
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// Returns the sum of the digits of n given the |
// Returns the sum of the digits of n given the |
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// sum of the digits of n - 1 |
// sum of the digits of n - 1 |
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uint64_t digit_sum(uint64_t n, |
uint64_t digit_sum(uint64_t n, uint64_t sum) { |
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++sum; |
++sum; |
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while (n > 0 && n % 10 == 0) { |
while (n > 0 && n % 10 == 0) { |
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std::cout.imbue(std::locale("")); |
std::cout.imbue(std::locale("")); |
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uint64_t previous = 1, gap = 0; |
uint64_t previous = 1, gap = 0, sum = 0; |
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int niven_index = 0, gap_index = 1 |
int niven_index = 0, gap_index = 1; |
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std::cout << "Gap index Gap Niven index Niven number\n"; |
std::cout << "Gap index Gap Niven index Niven number\n"; |