001package algs13;
002import java.text.DecimalFormat;
003import stdlib.*;
004public class PlaygroundInsert {
005        private Node first;
006        static class Node { 
007                public double item; 
008                public Node next; 
009                public Node (double item, Node next) { this.item = item; this.next = next; }
010        }
011        public void insert (double item) {  
012                // TODO
013        }
014
015        public static void main (String[] args) {
016                //Trace.showObjectIdsRedundantly(true);
017                Trace.showBuiltInObjects(true);
018                Trace.drawStepsOfMethod ("insert");
019                Trace.drawStepsOfMethod ("insertH");
020                Trace.run ();
021                testInsert ("[ 11 21 31 41 51 ]", "11 21 41 51", 31);
022                //PlaygroundInsert list = of ("11 21 41 51"); 
023                //list.insert(31);
024                Trace.draw ();
025                StdOut.println ("Finished tests");
026        }
027        
028        public static void main1 (String[] args) {
029                testInsert ("[ 11 21 31 41 51 ]", "11 21 41 51", 31);
030                testInsert ("[ 11 21 31 41 51 ]", "11 31 41 51", 21);
031                testInsert ("[ 11 21 31 41 51 ]", "11 21 31 51", 41);
032                testInsert ("[ 11 21 31 41 51 ]", "11 21 31 41", 51);
033                testInsert ("[ 11 ]", "", 11);
034                testInsert ("[ 11 21 31 41 51 ]", "21 31 41 51", 11);
035                StdOut.println ("Finished tests");
036        }
037        
038        /* ToString method to print */
039        public String toString () { 
040                // Use DecimalFormat #.### rather than String.format 0.3f to leave off trailing zeroes
041                DecimalFormat format = new DecimalFormat ("#.###");
042                StringBuilder result = new StringBuilder ("[ ");
043                for (Node x = first; x != null; x = x.next) {
044                        result.append (format.format (x.item));
045                        result.append (" ");
046                }
047                result.append ("]");
048                return result.toString ();
049        }
050
051        /* Method to create lists */
052        public static PlaygroundInsert of(String s) {
053                PlaygroundInsert result = new PlaygroundInsert ();
054                if ("".equals (s)) return result;
055                
056                Node first = null;
057                String[] nums = s.split (" ");
058                for (int i = nums.length-1; i >= 0; i--) {
059                        try { 
060                                double num = Double.parseDouble (nums[i]); 
061                                first = new Node (num, first);      
062                        } catch (NumberFormatException e) {
063                                throw new IllegalArgumentException (String.format ("Bad argument \"%s\": could not parse \"%s\" as a double", s, nums[i]));
064                        }
065                }
066                result.first = first;
067                return result;
068        }
069
070        private static void testInsert (String expected, String list, double item) {
071                PlaygroundInsert aList = PlaygroundInsert.of (list); 
072                aList.insert (item);
073                String actual = aList.toString ();
074                if (! expected.equals (actual)) {
075                        StdOut.format ("Failed [%s].insert(%f): Expecting (%s) Actual (%s)\n", list, item, expected, actual);
076                }
077        }
078}