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feat: implement fibonacci functions #1487

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feat: implement fibonacci functions #1487

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103e634
Add fibonacci iterative implementation
kolbryt Sep 30, 2025
3a8ac4c
Add fibonacci recursive implementation
kolbryt Sep 30, 2025
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16 changes: 12 additions & 4 deletions homework/fibonacci/fibonacci.hpp
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Original file line number Diff line number Diff line change
@@ -1,11 +1,19 @@
#pragma once

int fibonacci_iterative(int sequence) {
// TODO: Your implementation goes here
return 0;
int current_number{0};
int next_number{1};
for (int i{0}; i < sequence; ++i) {
int new_number = current_number + next_number;
current_number = next_number;
next_number = new_number;
}
return current_number;
}

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