Java，隐蔽地重新进入一个循环

Question

我想将此方法转换为一个循环，任何类型的循环都很好，我发现很难从递归转换。

public class Problem5
    {
     public double getRoot(double a, double b)
     {
      double x = (a + b)/2;

      if (b - a <= 0.00)
       return x;

      double y = getValue(x);

      if(y < 0)
       return getRoot(x, b);
      else
       return getRoot(a, x);
     }

Answer 1

    NSDocument *document = [SecondDocument new];
    [document makeWindowControllers];
    [[NSDocumentController sharedDocumentController] addDocument: document];
    [document showWindows];