java-online-course · MitusovDanil · Jun 1, 2020
diff --git a/java-data-handling-template.iml b/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>
diff --git a/src/main/java/com/epam/izh/rd/online/Main.java b/src/main/java/com/epam/izh/rd/online/Main.java
@@ -1,4 +1,9 @@
 package com.epam.izh.rd.online;
 
+
+
 public class Main {
+    public static void main(String[] args)  {
+
+    }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleFileRepository.java
@@ -1,5 +1,9 @@
 package com.epam.izh.rd.online.repository;
 
+
+import java.io.*;
+import java.util.Objects;
+
 public class SimpleFileRepository implements FileRepository {
 
     /**
@@ -8,9 +12,18 @@ public class SimpleFileRepository implements FileRepository {
      * @param path путь до директори
      * @return файлов, в том числе скрытых
      */
+
     @Override
     public long countFilesInDirectory(String path) {
-        return 0;
+        File file = new File(Objects.requireNonNull(getClass()
+                .getClassLoader().getResource(path)).getFile());
+        int count = 0;
+        for (File f : Objects.requireNonNull(file.listFiles())) {
+            if (f.isDirectory()) {
+                count += countFilesInDirectory(path + "/" + f.getName());
+            } else count++;
+        }
+        return count;
     }
 
     /**
@@ -21,7 +34,16 @@ public long countFilesInDirectory(String path) {
      */
     @Override
     public long countDirsInDirectory(String path) {
-        return 0;
+        File file = new File(Objects.requireNonNull(getClass().getClassLoader()
+                .getResource(path)).getFile());
+        int count = 0;
+        if (file.isDirectory()) {
+            for (File f : Objects.requireNonNull(file.listFiles())) {
+                count += countDirsInDirectory(path + "/" + f.getName());
+            }
+            count++;
+        }
+        return count;
     }
 
     /**
@@ -32,7 +54,7 @@ public long countDirsInDirectory(String path) {
      */
     @Override
     public void copyTXTFiles(String from, String to) {
-        return;
+
     }
 
     /**
@@ -44,6 +66,13 @@ public void copyTXTFiles(String from, String to) {
      */
     @Override
     public boolean createFile(String path, String name) {
+        File file = new File(Objects.requireNonNull(getClass()
+                .getClassLoader().getResource(path)).getFile() + File.separator + name);
+        try {
+            return file.createNewFile();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return false;
     }
 
@@ -55,6 +84,14 @@ public boolean createFile(String path, String name) {
      */
     @Override
     public String readFileFromResources(String fileName) {
-        return null;
+        String path = Objects.requireNonNull(getClass().getClassLoader()
+                .getResource(fileName)).getPath();
+        String readStr = null;
+        try (BufferedReader reader = new BufferedReader(new FileReader(path))) {
+            readStr = reader.readLine();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return readStr;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleBigNumbersService.java
@@ -2,18 +2,20 @@
 
 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;
+        return new BigDecimal(a).divide(new BigDecimal(b), range, RoundingMode.FLOOR);
     }
 
     /**
@@ -24,6 +26,14 @@ public BigDecimal getPrecisionNumber(int a, int b, int range) {
      */
     @Override
     public BigInteger getPrimaryNumber(int range) {
-        return null;
+        BigInteger one = new BigInteger("1");
+        BigInteger two = new BigInteger("2");
+        while (range > 0) {
+            one = one.add(two);
+            if (one.isProbablePrime(3)) {
+                range--;
+            }
+        }
+        return one;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleDateService.java
@@ -2,7 +2,11 @@
 
 import java.time.LocalDate;
 import java.time.LocalDateTime;
+import java.time.Year;
 import java.time.format.DateTimeFormatter;
+import java.util.stream.IntStream;
+
+import static java.time.LocalDate.now;
 
 public class SimpleDateService implements DateService {
 
@@ -14,7 +18,7 @@ public class SimpleDateService implements DateService {
      */
     @Override
     public String parseDate(LocalDate localDate) {
-        return null;
+        return localDate.format(DateTimeFormatter.ofPattern("dd-MM-yyyy"));
     }
 
     /**
@@ -25,7 +29,7 @@ public String parseDate(LocalDate localDate) {
      */
     @Override
     public LocalDateTime parseString(String string) {
-        return null;
+        return LocalDateTime.parse(string, DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm"));
     }
 
     /**
@@ -37,7 +41,7 @@ public LocalDateTime parseString(String string) {
      */
     @Override
     public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter formatter) {
-        return null;
+        return localDate.format(formatter);
     }
 
     /**
@@ -47,7 +51,10 @@ public String convertToCustomFormat(LocalDate localDate, DateTimeFormatter forma
      */
     @Override
     public long getNextLeapYear() {
-        return 0;
+        return IntStream.range(now().getYear(), now().getYear() + 8)
+                .filter(Year::isLeap)
+                .findFirst()
+                .getAsInt();
     }
 
     /**
@@ -57,8 +64,12 @@ public long getNextLeapYear() {
      */
     @Override
     public long getSecondsInYear(int year) {
-        return 0;
+        long seconds;
+        if (Year.isLeap(year)) {
+            seconds = 366 * 24 * 60 * 60;
+        } else {
+            seconds = 365 * 24 * 60 * 60;
+        }
+        return seconds;
     }
-
-
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleRegExpService.java
@@ -1,5 +1,13 @@
 package com.epam.izh.rd.online.service;
 
+import java.io.BufferedReader;
+import java.io.FileNotFoundException;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Objects;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
 public class SimpleRegExpService implements RegExpService {
 
     /**
@@ -11,7 +19,22 @@ public class SimpleRegExpService implements RegExpService {
      */
     @Override
     public String maskSensitiveData() {
-        return null;
+        String path = Objects.requireNonNull(getClass().getClassLoader()
+                .getResource("sensitive_data.txt")).getPath();
+        Pattern pattern = Pattern.compile("\\d{4}\\s(\\d{4}\\s\\d{4})\\s\\d{4}");
+        StringBuffer buf = new StringBuffer();
+        try (BufferedReader reader = new BufferedReader(new FileReader(path))) {
+            String readStr = reader.readLine();
+            Matcher matcher = pattern.matcher(readStr);
+            while (matcher.find()) {
+                matcher.appendReplacement(buf, matcher.group().
+                        replaceAll(matcher.group(1), "**** ****"));
+            }
+            matcher.appendTail(buf);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+        return buf.toString();
     }
 
     /**
@@ -22,6 +45,16 @@ public String maskSensitiveData() {
      */
     @Override
     public String replacePlaceholders(double paymentAmount, double balance) {
+        String path = Objects.requireNonNull(getClass().getClassLoader()
+                .getResource("sensitive_data.txt")).getPath();
+        try (BufferedReader bufferedReader = new BufferedReader(new FileReader(path))) {
+            String line = bufferedReader.readLine();
+            line = line.replaceAll("(\\$\\{(payment_amount)})", String.valueOf((int) paymentAmount));
+            line = line.replaceAll("(\\$\\{(balance)})", String.valueOf((int) balance));
+            return line;
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
         return null;
     }
 }
diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleTextService.java
@@ -1,64 +1,83 @@
 package com.epam.izh.rd.online.service;
 
+
 public class SimpleTextService implements TextService {
 
     /**
      * Реализовать функционал удаления строки из другой строки.
-     *
+     * <p>
      * Например для базовой строки "Hello, hello, hello, how low?" и строки для удаления ", he"
      * метод вернет "Hellollollo, how low?"
      *
-     * @param base - базовая строка с текстом
+     * @param base   - базовая строка с текстом
      * @param remove - строка которую необходимо удалить
      */
     @Override
     public String removeString(String base, String remove) {
-        return null; //TODO
+        return base.replaceAll(remove, "");
     }
 
     /**
      * Реализовать функционал проверки на то, что строка заканчивается знаком вопроса.
-     *
+     * <p>
      * Например для строки "Hello, hello, hello, how low?" метод вернет true
      * Например для строки "Hello, hello, hello!" метод вернет false
      */
     @Override
     public boolean isQuestionString(String text) {
-        return false; //TODO
+        return text.endsWith("?");
     }
 
     /**
      * Реализовать функционал соединения переданных строк.
-     *
+     * <p>
      * Например для параметров {"Smells", " ", "Like", " ", "Teen", " ", "Spirit"}
      * метод вернет "Smells Like Teen Spirit"
      */
     @Override
     public String concatenate(String... elements) {
-        return null; //TODO
+        StringBuilder strB = new StringBuilder();
+        for (String s : elements) {
+            strB.append(s);
+        }
+        return strB.toString();
     }
 
     /**
      * Реализовать функционал изменения регистра в вид лесенки.
      * Возвращаемый текст должен начинаться с прописного регистра.
-     *
+     * <p>
      * Например для строки "Load Up On Guns And Bring Your Friends"
      * метод вернет "lOaD Up oN GuNs aNd bRiNg yOuR FrIeNdS".
      */
     @Override
     public String toJumpCase(String text) {
-        return null; //TODO
+        String[] str = text.toLowerCase().split("");
+        StringBuilder builder = new StringBuilder();
+        for (int i = 0; i < str.length; i++) {
+            if (i % 2 != 0) {
+                builder.append(str[i].toUpperCase());
+            } else {
+                builder.append(str[i]);
+            }
+        }
+        return builder.toString();
     }
 
     /**
      * Метод определяет, является ли строка палиндромом.
-     *
+     * <p>
      * Палиндром - строка, которая одинаково читается слева направо и справа налево.
-     *
+     * <p>
      * Например для строки "а роза упала на лапу Азора" вернется true, а для "я не палиндром" false
      */
     @Override
     public boolean isPalindrome(String string) {
-       return false; //TODO
+        if (string.isEmpty()) {
+            return false;
+        }
+        return string.replaceAll(" ", "")
+                .equalsIgnoreCase(new StringBuilder(string.replaceAll(" ", ""))
+                        .reverse().toString());
     }
 }