Java_Mycode/print_pair_items_TWU.java at master · helloHKTK/Java_Mycode · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
//主要是想利用FHM算法中的2-items的TWU值
//下面实现的是：将嵌套的map表示的值填入二维数组，并打印二维数组

package com.helloHKTK;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;

public class Main {

	class Pair{
		int item = 0;
		int utility = 0;
	}

	public static void main(String[] args) {


		Map<Integer, Map<Integer, Long>> mapFMAP;
		mapFMAP =  new HashMap<Integer, Map<Integer, Long>>();

			// row1
			Map<Integer, Long> mp1= new HashMap<Integer, Long>();
			mp1.put(2, (long) 35);
			mp1.put(3, (long) 55);
			mp1.put(4, (long) 33);
			mp1.put(5, (long) 47);
			mapFMAP.put(1, mp1);

			//row2
			Map<Integer, Long> mp2= new HashMap<Integer, Long>();
			mp2.put(3, (long) 54);
			mp2.put(4, (long) 45);
			mp2.put(5, (long) 54);
			mapFMAP.put(2, mp2);

			//row3
			Map<Integer, Long> mp3= new HashMap<Integer, Long>();
			mp3.put(4, (long) 53);
			mp3.put(5, (long) 76);
			mapFMAP.put(3, mp3);

			//row4
			Map<Integer, Long> mp4= new HashMap<Integer, Long>();
			mp4.put(5, (long) 45);
			mapFMAP.put(4, mp4);

		for (Map.Entry<Integer, Map<Integer, Long>> entry : mapFMAP.entrySet()) {
		  System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
		}

		System.out.println("-----------------------");

		// 以下才是重点，将嵌套的map表示的值填入二维数组，并打印二维数组
		int i,j;
		int row_num=5,column_num=5;//0,1,2,3,4
        long[][] arr = new long[row_num][column_num];
		for (Map.Entry<Integer, Map<Integer, Long>> entry : mapFMAP.entrySet())
		{
			  //System.out.println("Key = " + entry.getKey() + ", Value = " + entry.getValue());
			  Map<Integer, Long> mp= new HashMap<Integer, Long>();
			  mp =entry.getValue();

			  for(Map.Entry<Integer, Long> entry1 : mp.entrySet())
			  {
				  arr[entry.getKey()-1][entry1.getKey()-1]=entry1.getValue();
			  }

		}

		for(i=0;i<row_num;i++)
	       {
	           for (j=0;j<column_num;j++)
	               System.out.print(arr[i][j]+" ");
	           System.out.print("\n");
	       }


	}

}