update

Author: Sarah Akinkunmi

out/production/deitel-exercise/chapter15/filematching/Account.class

@@ -0,0 +1,4 @@
+100 Alan Jones 348.17
+300 Mary Smith 27.19
+500 Sam Sharp 0.00
+700 Suzy Green -14.22

out/production/deitel-exercise/chapter15/filematching/CreateAccountFile.class

@@ -0,0 +1,7 @@
+100 27.14
+300 62.11
+400 100.56
+900 82.17
+300 83.89
+700 80.78
+700 1.53

out/production/deitel-exercise/chapter15/filematching/CreateTrFile.class

@@ -1,7 +1,23 @@
-package chapter15.filematching;
+package chapter15.filematchingwithmultipletransactions;
 
 import java.io.Serializable;
 
+/*
+15.5 (File Matching with Multiple Transactions) It’s possible (and actually common) to have several
+transaction records with the same record key. This situation occurs, for example, when a customer makes
+several purchases and cash payments during a business period. Rewrite your accounts receivable
+file-matching program from Exercise 15.4 to provide for the possibility of handling several transaction
+records with the same record key. Modify the test data of CreateData.java to include the additional
+transaction records in Fig. 15.16.
+
+                Account number  Dollar amount
+                300             83.89
+                700             80.78
+                700             1.53
+
+                Fig. 15.16 | Additional transaction records
+ */
+
 public class Account implements Serializable {
     private int account;
     private String firstName;

out/production/deitel-exercise/chapter15/filematching/FileMatch.class

@@ -1,4 +1,4 @@
-package chapter15.filematching;
+package chapter15.filematchingwithmultipletransactions;
 
 import java.io.FileNotFoundException;
 import java.util.Formatter;
@@ -12,7 +12,7 @@ public class CreateAccountFile {
 
     public static void openFile() {
         try {
-            output = new Formatter("oldmast.txt");
+            output = new Formatter("src\\chapter15\\filematchingwithmultipletransactions\\files\\oldmast.txt");
         } catch (SecurityException e) {
             System.err.println("Write permission denied. Terminating.");
             System.exit(1);

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/Account.class

@@ -1,4 +1,4 @@
-package chapter15.filematching;
+package chapter15.filematchingwithmultipletransactions;
 
 import java.io.FileNotFoundException;
 import java.util.Formatter;
@@ -12,7 +12,7 @@ public class CreateTrFile {
 
     public static void openFile() {
         try {
-            output = new Formatter("trans.txt");
+            output = new Formatter("src\\chapter15\\filematchingwithmultipletransactions\\files\\trans.txt");
         }  catch (SecurityException e) {
             System.err.println("Write permission denied. Terminating.");
             System.exit(1);

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/CreateAccountFile.class

@@ -1,13 +1,11 @@
-package chapter15.filematching;
+package chapter15.filematchingwithmultipletransactions;
 
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
-import java.util.Formatter;
-import java.util.NoSuchElementException;
-import java.util.Scanner;
+import java.util.*;
 
 public class FileMatch {
     private static Scanner scannerA;
@@ -19,11 +17,12 @@ public class FileMatch {
     private static String[] fullName;
     private static double[] accBal;
     private static double[] trAmnt;
+    private static ArrayList<Double> trAmnt2 = new ArrayList<>();
     private static int lines = 0;
     private static int lines2 = 0;
 
     public static void openAccountFile() {
-        Path path = Paths.get("oldmast.txt");
+        Path path = Paths.get("src\\chapter15\\filematchingwithmultipletransactions\\files\\oldmast.txt");
 
         try {
             scannerA = new Scanner(path);
@@ -38,7 +37,7 @@ public static void openAccountFile() {
     }
 
     public static void openTransactionRecordFile() {
-        Path path = Paths.get("trans.txt");
+        Path path = Paths.get("src\\chapter15\\filematchingwithmultipletransactions\\files\\trans.txt");
         try {
             scannerB = new Scanner(path);
             lines2 = (int) Files.lines(path).count();
@@ -64,6 +63,20 @@ public static void readAccountRecords() {
         }
     }
 
+    /**
+     * for sorted arrays with elements having same values
+     * @param arr - the array we want to eliminate duplicate values from
+     * @return arr - with no duplicate elements
+     */
+    public static int[] removeDuplicates(int[] arr) {
+        LinkedHashSet<Integer> set = new LinkedHashSet<>();
+        for (int j : arr) {
+            set.add(j);
+        }
+
+        return set.stream().mapToInt(Number::intValue).toArray();
+    }
+
     public static void readTrRecords() {
         try {
             while (scannerB.hasNext()) {
@@ -79,19 +92,40 @@ public static void readTrRecords() {
 
     public static void compare() {
         try {
-            output = new Formatter("newmast.txt");
-            output2 = new Formatter("log.txt");
+            output = new Formatter("src\\chapter15\\filematchingwithmultipletransactions\\files\\newmast.txt");
+            output2 = new Formatter("src\\chapter15\\filematchingwithmultipletransactions\\files\\log.txt");
+
+            System.out.println();
+            int[] trAccNum2 = removeDuplicates(trAccNum);
+            Arrays.sort(trAccNum2);
+//            for(int x : trAccNum2) System.out.println(x);
+
+            for (int i = 0; i < trAccNum.length; i++) {
+                trAmnt2.add(trAmnt[i]);
+                for (int j = i + 1; j < trAccNum.length; j++) {
+                    if(trAccNum[j] == trAccNum[i]) {
+                        trAmnt2.remove(trAmnt[i]);
+                        trAmnt2.add(trAmnt[i] + trAmnt[i++]);
+                    } else {
+                        trAmnt2.add(trAmnt[i]);
+                    }
+                }
+            }
+
+            for (double x : trAmnt2) {
+                System.out.print(x + " ");
+            }
 
             if(lines == lines2) {
                 for (int i = 0; i < lines; i++) {
                     for (int j = 0; j < lines2; j++) {
-                        if (accNum[i] == trAccNum[j]) {
-                            output.format("%d %s %.2f%n", accNum[i], fullName[i], accBal[i] + trAmnt[i]);
+                        if (accNum[i] == trAccNum2[i]) {
+                            output.format("%d %s %.2f%n", accNum[i], fullName[i], accBal[i] += trAmnt2.get(i));
                             break;
-                        } else if (accNum[i] != trAccNum[i]) {
+                        } else if (accNum[i] != trAccNum2[i]) {
                             output.format("%d %s %.2f%n", accNum[i], fullName[i], accBal[i]);
                             output2.format("%s %d%n", "Unmatched transaction record for account number",
-                                    trAccNum[i]);
+                                    trAccNum2[i]);
                             break;
                         }
                     }

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/CreateTrFile.class

@@ -1,4 +1,4 @@
-package chapter15.filematching;
+package chapter15.filematchingwithmultipletransactions;
 
 public class TransactionRecord {
     private int accountNumber;

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/FileMatch.class

@@ -1,2 +0,0 @@
-Unmatched transaction record for account number 400
-Unmatched transaction record for account number 900

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/TransactionRecord.class

@@ -1,4 +0,0 @@
-100 Alan Jones 375.31
-300 Mary Smith 89.30
-500 Sam Sharp 0.00
-700 Suzy Green -14.22

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/files/log.txt

@@ -2,3 +2,6 @@
 300 62.11
 400 100.56
 900 82.17
+300 83.89
+700 80.78
+700 1.53

out/production/deitel-exercise/chapter15/filematchingwithmultipletransactions/files/newmast.txt

@@ -1,2 +1,5 @@
-package hackerranksolutions.thirtydaysofcode.day20;public class Day20 {
+package hackerranksolutions.thirtydaysofcode.day20;
+
+public class Day20 {
+
 }