Write a recursive, int-valued function, len, that accepts a string and returns the number of characters in the string.
the length of a string is:
0 if the string is the empty string ("").
1 more than the length of the rest of the string beyond the first character.

Which action is good business etiquette? a. switching your cell phone off before you enter a meeting b. keeping your cell phone on low volume before you enter a meeting c. setting a pleasant ring tone on your cell phone before you enter a meeting d. setting a standard ringtone on your cell phone before you enter a meeting

in 2007, floridians died in alcohol-related collisions.a.  501b.  1,051c.  5,015d.  10,839

Acomputer has a two-level cache. suppose that 60% of the memory references hit on the first level cache, 35% hit on the second level, and 5% miss. the access times are 5 nsec, 15 nsec, and 60 nsec, respectively, where the times for the level 2 cache and memory start counting at the moment it is known that they are needed (e.g., a level 2 cache access does not even start until the level 1 cache miss occurs). what is the average access time?