First, a 15-minute phone call with questions about experience from previous positions.

Afterwards, a 2-hour online interview was scheduled. It included more questions about previous experience and a single question about code.

Given a string that can contain only English letters and a regex that may include:

• English letters
• Question marks – a question mark can double the previous letter or can be blank. For example, str="abbc", reg="ab?c?" is valid.