HW#1 --- last modified January 16 2019 00:35:13..

A solution set is posted here.

Due date: Sept. 17. by start of class
========= 

Files to be submitted: cs151sec3hw1.java (send via e-mail) 
====================== Also turn in on paper at start of class
                       problem 1.1 out of Jia.

Purpose: (1) To check that our Java skills are still with us.
======== (2) To gain some experience with OO-modeling.

Specification:
==============
Besides doing problem 1.1 out of Jia on this assignment you will
write a Java application which takes its first command line 
argument's value (say x) and writes out the xth largest of the 
remaining command line arguments. For instance, if at the the 
command line I type:

java cs151sec3hw1 4 8 37 3 2 5

your program should write: 
3 

since 3 is the fourth largest number among 8, 37, 3, 2, and 5. 
All input/output should be done using System.in / System.out.
Your program should consist of two classes: cs151sec3hw3 
(for this class we'll allow the driver class containing main 
to start with a lower case) and OrderedNums. OrderedNums has 
one constructor: OrderedNums(int i, String arr[]), one private 
method: sort(), and one public method: kLargest(int k). It 
also has a private field: int numbers[].
 
The constructor for OrderedNums works as follows: It begins at the
ith element of arr[] and converts each element in turn to an int 
and stores this int in numbers. It then calls sort(). 

The sort() uses whatever sorting algorithm you know and want to code
to sort numbers from its largest to smallest element.

kLargest(int k) just returns numbers[k-1]. i.e., the largest element 
would be obtained by calling kLargest(1). 

cs151sec3hw1's main method simply creates an instance myNums of 
OrderedNums using 1 and args[] as the arguments to OrderedNums 
constructor. It then calls myNums.kLargest(args[0]); and writes 
out the result.

For this homework you do not needed to be able to handle 
exceptional inputs and any exceptions should be thrown.


Point Breakdown
===============
Problem 1.1 (one point for each of
             a,b,c,d)                  4pts
cs151sec3hw1 works as described        1pt
OrderedNums constructor works
  as described                         1pt
sort() does sort numbers               1pt
kLargest returns the kth largest elt   1pt

Total..................................8pts                          

A solution set is posted here.