1    /* 
2     * A program to preform some basic operations on a list of String names. 
3     */
4    
5    package arraylists;
6    
7    import java.util.ArrayList;
8    import java.util.List;
9    
10   public class ArrayListProcessing {
11   
12       public static void main(String[] args){
13   
14           // POINT A; add some strings which represent the names to an ArrayList.
15   
16           List<String> names = new ArrayList<>();
17           names.add("Holiday, Billie");
18           names.add("Claudel, Camille");
19           names.add("Picasso, Pablo");
20           names.add("Gallen-Kallelal, Akseli");
21           names.add("Zotto, Osvaldo");
22           names.add("Rodriguez, Deysy");
23           names.add("Cortez, Brenda");
24   
25           //First names
26           List<String> firstNamesList = firstNames(names);
27           System.out.print("First names: ");
28           for (String firstName : firstNamesList){
29               System.out.print(firstName + " ");
30           }
31           System.out.println();
32           String firstNames = String.join(", ", firstNamesList);
33           System.out.println("First names: " + firstNames);
34   
35           //Last names
36           List<String> lastNamesList = lastNames(names);
37           System.out.print("Last names: ");
38           for (String lastName : lastNamesList){
39               System.out.print(lastName + " ");
40           }
41           System.out.println();
42           String lastNames = String.join(", ", lastNamesList);
43           System.out.println("Last names: " + lastNames);
44   
45           //First names to uppercase
46           List<String> upperCaseFirstNameList = upperCaseNames(firstNames(names));
47           String upperCaseFirstNames = String.join(", ", upperCaseFirstNameList);
48           System.out.println("Uppercase first names: " + upperCaseFirstNames);
49   
50           //Names with hyphens
51           List<String> hyphenatedNameList = hyphenatedNames(lastNames(names));
52           String hyphenatedNames = String.join(", ", hyphenatedNameList);
53           System.out.println("Hyphenated names: " + hyphenatedNames);
54   
55           //Total name length
56           int totalLength = totalNameLength(names);
57           System.out.println("Total length: " + totalLength);
58   
59           //Total first name length
60           int totalFirstLength = totalNameLength(firstNamesList);
61           System.out.println("Total first name length: " + totalFirstLength);
62   
63           //Product total of names
64           int productTotalLength = productNameLength(names);
65           System.out.println("Product total of names: " + productTotalLength);
66       }
67   
68       public static int productNameLength(List<String> names){
69           int totalLength = 1;
70           for (String name : names){
71               totalLength = totalLength * name.length();
72           }
73           return totalLength;
74       }
75   
76       public static int totalNameLength(List<String> names){
77           int totalLength = 0;
78           for (String name : names){
79               totalLength = totalLength + name.length();
80           }
81           return totalLength;
82       }
83   
84       public static List<String> hyphenatedNames(List<String> names){
85           List<String> hyphenateds = new ArrayList<>();
86           for (String name : names){
87               if (name.contains("-")){
88                   hyphenateds.add(name);
89               }
90           }
91           return hyphenateds;
92       }
93   
94       public static List<String> upperCaseNames(List<String> names){
95           List<String> uppercases = new ArrayList<>();
96           for (String name : names){
97               uppercases.add(name.toUpperCase());
98           }
99           return uppercases;
100      }
101  
102      private static List<String> lastNames(List<String> names) {
103          List<String> lasts = new ArrayList<>();
104          for (String name : names){
105              lasts.add(lastName(name));
106          }
107          return lasts;
108      }
109  
110      private static String firstName(String directoryStyleName) {
111          int commaPosition = directoryStyleName.indexOf(",");
112          return directoryStyleName.substring((commaPosition + 2), (directoryStyleName.length()));
113      }
114  
115      private static List<String> firstNames(List<String> names){
116          List<String> firsts = new ArrayList<>();
117          for (String name : names){
118              firsts.add(firstName(name));
119          }
120          return firsts;
121      }
122  
123      private static String lastName(String directoryStyleName) {
124          int commaPosition = directoryStyleName.indexOf(",");
125          return directoryStyleName.substring(0, commaPosition);
126      }
127  
128  }
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