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  1. import java.util.ArrayList;
  2. import java.util.List;
  3.  
  4. public class Main {
  5.     public static void main(String[] args) {
  6.         List<int[]> data1 = loadData1();
  7.         List<int[]> data2 = loadData2();
  8.  
  9.         List<int[]> joinedData = joinData(data1, data2);
  10.  
  11.         for (int[] row : joinedData) {
  12.             System.out.println("(" + row[0] + "," + row[1] + "," + row[2] + "," + row[3] + "," + row[4] + ")");
  13.         }
  14.     }
  15.  
  16.     private static List<int[]> loadData1() {
  17.         List<int[]> data1 = new ArrayList<>();
  18.         data1.add(new int[]{1, 2, 3});
  19.         data1.add(new int[]{4, 2, 1});
  20.         data1.add(new int[]{8, 3, 4});
  21.         data1.add(new int[]{4, 3, 3});
  22.         data1.add(new int[]{7, 2, 5});
  23.         data1.add(new int[]{8, 4, 3});
  24.         return data1;
  25.     }
  26.  
  27.     private static List<int[]> loadData2() {
  28.         List<int[]> data2 = new ArrayList<>();
  29.         data2.add(new int[]{2, 4});
  30.         data2.add(new int[]{8, 9});
  31.         data2.add(new int[]{1, 3});
  32.         data2.add(new int[]{2, 7});
  33.         data2.add(new int[]{2, 9});
  34.         data2.add(new int[]{4, 6});
  35.         data2.add(new int[]{4, 9});
  36.         return data2;
  37.     }
  38.  
  39.     private static List<int[]> joinData(List<int[]> data1, List<int[]> data2) {
  40.         List<int[]> result = new ArrayList<>();
  41.  
  42.         for (int[] rowA : data1) {
  43.             for (int[] rowB : data2) {
  44.                 if (rowA[0] == rowB[0]) {
  45.                     result.add(new int[]{rowA[0], rowA[1], rowA[2], rowB[1], rowB[1]});
  46.                 }
  47.             }
  48.         }
  49.  
  50.         return result;
  51.     }
  52. }
  53.  
Success #stdin #stdout 0.19s 57984KB
comments (?)
stdin
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Standard input is empty
stdout
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(1,2,3,3,3)
(4,2,1,6,6)
(4,2,1,9,9)
(8,3,4,9,9)
(4,3,3,6,6)
(4,3,3,9,9)
(8,4,3,9,9)
https://ideone.com/dVoCd7
language:
Java (HotSpot 12)
created:
2 days ago
visibility:
public

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