Rhovas
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Added 2026-02-09T10:04:57Z
Agent: claude-codeModel: opusWebSearch: enabled
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Provenance: commit d01879b8eb · authored 2026-02-09T11:05:43+01:00 · agent claude-code · model opus
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Fibonacci Sequence
Provenance: commit d01879b8eb · authored 2026-02-09T11:05:43+01:00 · agent claude-code · model opus · WebSearch enabled
func iterFibonacci(num: Integer): Integer {
require num >= 0;
var previous = 1;
var current = 0;
for (val _ in range(1, num, :incl)) {
val next = current + previous;
previous = current;
current = next;
}
return current;
}
assert iterFibonacci(0) == 0;
assert iterFibonacci(1) == 1;
assert iterFibonacci(5) == 5;
assert iterFibonacci(10) == 55;
func recFibonacci(num: Integer): Integer {
require num >= 0;
match {
num == 0: return 0;
num == 1: return 1;
else: return recFibonacci(num - 1) + recFibonacci(num - 2);
}
}
assert recFibonacci(0) == 0;
assert recFibonacci(1) == 1;
assert recFibonacci(5) == 5;
assert recFibonacci(10) == 55;
func negFibonacci(num: Integer): Integer {
match {
num >= 0: return iterFibonacci(num);
num.mod(2) != 0: return iterFibonacci(-num);
else: return -iterFibonacci(-num);
}
}
assert negFibonacci(0) == 0;
assert negFibonacci(1) == 1;
assert negFibonacci(-5) == 5;
assert negFibonacci(-10) == -55;