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comparison src/jungle/test/functionalJava/ListTest.java @ 54:3d78d438f97b

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add ListTest
author one
date Sun, 14 Jul 2013 17:21:37 +0900
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children ccfe9b5e8f11
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53:f47a02368099 54:3d78d438f97b
1 package jungle.test.functionalJava;
2
3 import java.util.Iterator;
4
5 import fj.P2;
6 import fj.data.List;
7
8 public class ListTest{
9
10 public static void main(String[] args) {
11 List<Integer> list = List.nil();
12 list = list.cons(1);
13 list = list.cons(2);
14 list = list.cons(4);
15 System.out.println("list :"+list);
16 System.out.println("list.index(0) :"+list.index(0));
17 System.out.println("list.head() :"+ list.head());
18 System.out.println("list.tail() :"+list.tail());
19 System.out.println("list.splitAt(2)");
20 P2<List<Integer>, List<Integer>> p2 = list.splitAt(2);
21 List<Integer> list1 = p2._1();
22 List<Integer> list2 = p2._2();
23 System.out.println(list1);
24 System.out.println(list2);
25
26 final int INSERT_NUM = 3;
27 list = insertInteger(list, INSERT_NUM);
28 System.out.println("newList :"+ list);
29 }
30
31 public static List<Integer> insertInteger(List<Integer> list, final int insertNum) {
32 int count = 0;
33 for(Iterator<Integer> iter = list.iterator(); iter.hasNext();){
34 int num = iter.next();
35 if(insertNum > num ) {
36 break;
37 }
38 count++;
39 }
40 P2<List<Integer>, List<Integer>> p2 = list.splitAt(count);
41 List<Integer> newList = List.nil();
42 newList = p2._2().cons(insertNum);
43 newList = p2._1().append(newList);
44 return newList;
45 }
46
47
48 }