You have the following variable declarations:

SimpleReader in = new

SimpleReader1L(); SimpleWriter out = new SimpleWriter1L();

Write program fragments (i. e., you do not need to write complete programs) that read a line of input as a String and print:

Only the uppercase letters in the String

Every second letter of the String

The String with all vowels replaced by an underscore

The number of vowels in the String

The positions of all vowels in the String

Why would a programmer use the logical operator and in an if statement? a: when an action is to be taken that requires both conditions to be falseb: when an action is to be taken that requires both conditions to be truec: when an action is to be taken that requires the first condition to be falsed: when an action is to be taken that requires the second condition to be truei took the test and the answer is b.

Problem 1 - hashing we would like to use initials to locate an individual. for instance, mel should locate the person mark e. lehr. note: this is all upper case. generate a hash function for the above using the numbers on your telephone. you know, each letter has a number associated with it, so examine your telephone keypad. generate 512 random 3 letter initials and take statistics on a linked list array size 512 to hold this information report how many have no elements, 1 element, 2 elements, does this agree with the hashing statistics distribution?

How would you categorize the software that runs on mobile devices? break down these apps into at least three basic categories and give an example of each.