Cyclomatic Complexity in piece of code with multiple exit points

Question

I have this method that validates a password:

/**
 * Checks if the given password is valid.
 * 
 * @param password The password to validate.
 * @return {@code tr         


        

Answer 1

As nicely explained here :

Cyclomatic Complexity = ( 2 + ifs + loops +cases - return ) where:

* ifs is the number of IF operators in the function,
* loops is the number of loops in the function,
* cases is the number of switch branches in the function (without default), and
* return is the number of return operators in the function.

As already mentioned, logical conditions are also calculated.

For example if (len < 8 || len > 20) counts as 3 conditions :

1. if
2. len<8
3. len > 20

That means, that your code has complexity of 2 + 8 - 3 = 7, where :

• 2 - it is always there (see formula up there)
• 8 - number of branches
• 3 - number of returns