Exercise 1-1. Write a program that counts from 1 to 15, printing out each number,
and then counts backward by twos back to 1, again printing out each
Exercise 1-2. Each term of the Fibonacci series is formed by adding the previous
two terms. What sort of series do you get if you add the previous
three terms? Write a program to print the first 20 terms of this
Exercise 1-3. Write a program that takes two numbers and a string as command-line
arguments and prints out the substring of the string specified by the
two numbers. For example:
% java Substring hello 1 3
should print out:
Handle all possible exceptions that might arise because of bad input.
Exercise 1-4. Write a program that interactively reads lines of input from the user
and prints them back out, reversed. The program should exit if the
user types "tiuq".
Exercise 1-5. The SortNumbers class shows how you can sort an
array of doubles. Write a program that uses this class to sort an
array of 100 floating-point numbers. Then, interactively prompt the
user for numeric input, and display the next larger and next smaller
number from the array. You should use an efficient binary search
algorithm to find the desired position in the sorted array.