Define the magnitude of a number as the location of the decimal point from the left of the number (that is, if a number has 4 digits followed by the decimal point, it will have a magnitude of 4). 100 would then have a magnitude of 3 and 55,555.555 would have a magnitude of 5. A partial recursive method is given below to compute a positive int parameter's magnitude. Which answer below is needed to complete the method?
Public int magnitude(double x)
{
If (x

Question

Define the magnitude of a number as the location of the decimal point from the left of the number (that is, if a number has 4 digits followed by the decimal point, it will have a magnitude of 4). 100 would then have a magnitude of 3 and 55,555.555 would have a magnitude of 5. A partial recursive method is given below to compute a positive int parameter's magnitude. Which answer below is needed to complete the method?
Public int magnitude(double x)
{
If (x < 1) return 0;
Else return _______;
}
A) magnitude(x - 1) + 10;
B) magnitude(x - 10) + 1;
C) magnitude(x / 10) + 10;
D) magnitude(x / 10) + 1;
E) magnitude(x / 10) * 2;

Quizplus · Accepted Answer

D) The method must count the number of digits to the left of the decimal point, so it continually divides the value by 10 until the value has no digits to the left of the decimal point (this is the case if value < 1). Each time the value is divided by 10, 1 is added to the return value. 55,555.555 will be divided by 10 five times before it becomes < 1, and thus return 5.

Define the Magnitude of a Number as the Location of the Decimal