Fibonacci sinfi ≠ 0 {if (number < 0) {return (0, 1); } int previous = 0; current int = 1; while (true) { next intFibonacci = previous + current; if (nextFibonacci > number) { return (current, nextFibonacci); } previous = current; Arrange = nextFibonacci; } } public class FibonacciTests { [Fact] public TestClosest TestCibonacciNumberFibonacciNumberForNegativeNumbers) using System; using Xunit; using Shouldly; public static class Fibonacci { public static (int closest, int next) GetClosestFibonacciNumbers{ if (number < 0) { return (0, 1); } int previous = 0; current int = 1; while (true) { next intFibonacci = previous + current; if
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