Print the first $50$ prime numbers.

$($Sort three numbers$)$ Write a method with the following header to display three numbers in increasing order:

public static void displaySortedNumbers$($ double num$1,$ double num$2,$ double num$3)$

Some Websites impose certain rules for passwords. Write a method that checks whether a string is a valid password. Suppose the password rules are as follows:

A password must have at least eight characters.

A password must contain only letters and digits.

A password must contain at least two digits.

Write a program that prompts the user to enter a password and displays "Valid Password" if the rules are followed, or "Invalid Password" otherwise.

Read one hundred numbers, compute their average, and find out how many numbers are above the average.

Generate $100$ lowercase letters randomly and assign to an array of characters.

Count the occurrence of each letter in the array.

Sample output below.

The lowercase letters are:

d x u c a lm a c bu fiv b i a s

avym y p n pi y z p b p $fzcx$

m c n $n$ ryd y thp $rrj$ pa s $l$