added implementation

java-data-handling-template.iml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_8">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/main/resources" type="java-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-api:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.apiguardian:apiguardian-api:1.1.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.opentest4j:opentest4j:1.2.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-commons:1.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-params:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.jupiter:junit-jupiter-engine:5.5.2" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.junit.platform:junit-platform-engine:1.5.2" level="project" />
+  </component>
+</module>

src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java

@@ -1,5 +1,15 @@
 package com.epam.izh.rd.online.repository;
 
+import java.io.BufferedReader;
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.net.URL;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.StandardCopyOption;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -10,7 +20,26 @@ public class SimpleFileRepository implements FileRepository {
      */
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        File file = new File(path);
+        if (!(file.isDirectory() || file.isFile()))
+        {
+            URL url = getClass().getResource("/" + path);
+            file = new File(url.getPath());
+        }
+        File[] directory = file.listFiles();
+
+        long count = 0;
+
+        if (directory != null) {
+            for (File item : directory) {
+                if (!item.isFile()) {
+                    count += countFilesInDirectory(item.getPath());
+                } else {
+                    count++;
+                }
+            }
+        }
+        return count;
     }
 
     /**
@@ -21,7 +50,28 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        long count = 0;
+
+        File file = new File(path);
+        if (!(file.isDirectory() || file.isFile()))
+        {
+            URL url = getClass().getResource("/" + path);
+            file = new File(url.getPath());
+            count++;
+        }
+
+        File[] directory = file.listFiles();
+
+
+        if (directory != null) {
+            for (File item : directory) {
+                if (item.isDirectory()) {
+                    count++;
+                    count += countDirsInDirectory(item.getPath());
+                }
+            }
+        }
+        return count;
     }
 
     /**
@@ -32,9 +82,17 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+        File file = new File(to);
+        createFile(file.getParent(), file.getName());
+
+        try {
+            Files.copy(Paths.get(from), Paths.get(to), StandardCopyOption.REPLACE_EXISTING);
+        } catch (IOException ioEx) {
+            ioEx.printStackTrace();
+        }
     }
 
+
     /**
      * Метод создает файл на диске с расширением txt
      *
@@ -44,6 +102,20 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
+        URL url = getClass().getResource("/");
+        File folder = new File(url.getPath() + "/" + path);
+
+        File file = new File(folder.getPath() + "/" + name);
+        boolean isDirectoryCreated = !new File(path).isDirectory();
+
+        try {
+            if (isDirectoryCreated) {
+                Files.createDirectory(Paths.get(path));
+            }
+            return file.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return false;
     }
 
@@ -55,6 +127,15 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        StringBuilder stringBuilder = new StringBuilder();
+        try (BufferedReader is = new BufferedReader(new FileReader("src/main/resources/" + fileName))) {
+            String line;
+            while ((line = is.readLine()) != null) {
+                stringBuilder.append(line);
+            }
+        } catch (IOException ioex) {
+            ioex.printStackTrace();
+        }
+        return stringBuilder.toString();
     }
 }

src/main/java/com/epam/izh/rd/online/service/SieveEratosthenes.java

@@ -0,0 +1,52 @@
+package com.epam.izh.rd.online.service;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.List;
+
+class SieveEratosthenes {
+
+    private static class PrimePair {
+        BigInteger prime;
+        BigInteger lastCrossed;
+
+        PrimePair(BigInteger prime, BigInteger lastCrossed) {
+            this.prime = prime;
+            this.lastCrossed = lastCrossed;
+        }
+    }
+
+    private List<PrimePair> primes;
+
+    SieveEratosthenes() {
+        primes = new ArrayList<>();
+        primes.add(new PrimePair(new BigInteger("2"), new BigInteger("2")));
+        primes.add(new PrimePair(new BigInteger("3"), new BigInteger("3")));
+    }
+
+    BigInteger fillNPrimes(int n) {
+        if (n >= 0 && n <= 1) {
+            return primes.get(n).prime;
+        }
+        while (primes.size() <= n) {
+            addNextPrime();
+        }
+        return primes.get(primes.size() - 1).prime;
+    }
+
+    private void addNextPrime() {
+        BigInteger candidate = primes.get(primes.size() - 1).prime.add(new BigInteger("2"));
+        for (int i = 1; i < primes.size(); i++) {
+            PrimePair p = primes.get(i);
+            while (p.lastCrossed.compareTo(candidate) < 0) {
+                p.lastCrossed = p.lastCrossed.add(p.prime);
+            }
+            if (p.lastCrossed.compareTo(candidate) == 0) {
+                candidate = candidate.add(new BigInteger("2"));
+                i = -1;
+            }
+        }
+        primes.add(new PrimePair(candidate, candidate));
+    }
+}
+

src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java

@@ -2,18 +2,21 @@
 
 import java.math.BigDecimal;
 import java.math.BigInteger;
+import java.math.RoundingMode;
 
 public class SimpleBigNumbersService implements BigNumbersService {
 
     /**
      * Метод делит первое число на второе с заданной точностью
      * Например 1/3 с точностью 2 = 0.33
+     *
      * @param range точность
      * @return результат
      */
     @Override
     public BigDecimal getPrecisionNumber(int a, int b, int range) {
-        return null;
+        BigDecimal[] bigDecimals = {new BigDecimal(a), new BigDecimal(b)};
+        return bigDecimals[0].divide(bigDecimals[1], range, RoundingMode.HALF_UP);
     }
 
     /**
@@ -24,6 +27,8 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        SieveEratosthenes sieveEratosthenes = new SieveEratosthenes();
+        return sieveEratosthenes.fillNPrimes(range);
     }
 }
+

src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java

@@ -3,6 +3,7 @@
 import java.time.LocalDate;
 import java.time.LocalDateTime;
 import java.time.format.DateTimeFormatter;
+import java.util.GregorianCalendar;
 
 public class SimpleDateService implements DateService {
 
@@ -14,7 +15,8 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("dd-MM-yyyy");
+        return localDate.format(formatter);
     }
 
     /**
@@ -25,7 +27,8 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm");
+        return LocalDateTime.parse(string, formatter);
     }
 
     /**
@@ -37,7 +40,8 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,7 +51,14 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        GregorianCalendar calendar = (GregorianCalendar) GregorianCalendar.getInstance();
+        int leapYear = calendar.get(GregorianCalendar.YEAR);
+        for (; ; ) {
+            leapYear++;
+            if (calendar.isLeapYear(leapYear)) {
+                return leapYear;
+            }
+        }
     }
 
     /**
@@ -57,7 +68,12 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        GregorianCalendar calendar = (GregorianCalendar) GregorianCalendar.getInstance();
+        if (calendar.isLeapYear(year)) {
+            return 366 * 24 * 60 * 60;
+        } else {
+            return 365 * 24 * 60 * 60;
+        }
     }
 
 

src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java

@@ -1,5 +1,9 @@
 package com.epam.izh.rd.online.service;
 
+import com.epam.izh.rd.online.repository.SimpleFileRepository;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,7 +15,16 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
-        return null;
+        StringBuilder stringBuilder = new StringBuilder(
+                new SimpleFileRepository().readFileFromResources("sensitive_data.txt")
+        );
+
+        Pattern pattern = Pattern.compile("((\\d){4}\\s?){4}");
+        Matcher matcher = pattern.matcher(stringBuilder.toString());
+        while (matcher.find()) {
+            stringBuilder.replace(matcher.start() + 4, matcher.end() - 5, " **** **** ");
+        }
+        return stringBuilder.toString();
     }
 
     /**
@@ -22,6 +35,23 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
-        return null;
+        StringBuilder stringBuilder = new StringBuilder(
+                new SimpleFileRepository().readFileFromResources("sensitive_data.txt")
+        );
+
+        Pattern pattern = Pattern.compile("[$][{]{1}\\w+[}]{1}");
+        Matcher matcher = pattern.matcher(stringBuilder.toString());
+
+        while (matcher.find()) {
+            if (stringBuilder.substring(matcher.start() + 2, matcher.end() - 1).equals("payment_amount")) {
+                stringBuilder.replace(matcher.start(), matcher.end(), String.format("%.0f", paymentAmount));
+                matcher = pattern.matcher(stringBuilder.toString());
+            } else if (stringBuilder.substring(matcher.start() + 2, matcher.end() - 1).equals("balance")) {
+                stringBuilder.replace(matcher.start(), matcher.end(), String.format("%.0f", balance));
+                matcher = pattern.matcher(stringBuilder.toString());
+            }
+        }
+        return stringBuilder.toString();
     }
+
 }