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Katarzyna-W wants to merge 4 commits into from
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Update fibonacci.hpp #1464

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f531866
Update fibonacci.hpp
Katarzyna-W Jul 7, 2025
2714fa5
Update fibonacci.hpp
Katarzyna-W Jul 7, 2025
8134cc1
Update fibonacci.hpp
Katarzyna-W Jul 7, 2025
59bb0fd
Update fibonacci.hpp
Katarzyna-W Jul 7, 2025
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27 changes: 23 additions & 4 deletions homework/fibonacci/fibonacci.hpp
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Original file line number Diff line number Diff line change
@@ -1,11 +1,30 @@
#pragma once

int fibonacci_iterative(int sequence) {
// TODO: Your implementation goes here
return 0;
if (sequence == 0) {
return 0;
} else if (sequence == 1) {
return 1;
} else if (sequence == 2) {
return 1;
}
int next{};
int prev1 = 0;
int prev2 = 1;
for (std::size_t i = 1; i < sequence; ++i) {
next = prev1 + prev2;
prev1 = prev2;
prev2 = next;
}
return next;
}

int fibonacci_recursive(int sequence) {
// TODO: Your implementation goes here
return 0;
if (sequence == 1 or sequence == 2) {
return 1;
} else if (sequence == 0) {
return 0;
}
return fibonacci_recursive(sequence - 2) +
fibonacci_recursive(sequence - 1);
}