From 1a2d05559c676662bf880945f3ed913de526cc3d Mon Sep 17 00:00:00 2001
From: Nikita Karpov <bonilka@gmail.com>
Date: Thu, 13 Dec 2018 22:52:31 +0300
Subject: [PATCH 1/2] -add enc; -add dec;

---
 .idea/misc.xml         |  2 +-
 src/crypto/Crypto.java | 35 ++++++++++++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 2 deletions(-)

diff --git a/.idea/misc.xml b/.idea/misc.xml
index a165cb3..cbb200f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" default="false" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" default="false" project-jdk-name="11" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/out" />
   </component>
 </project>
\ No newline at end of file
diff --git a/src/crypto/Crypto.java b/src/crypto/Crypto.java
index 51d57b7..7851fd1 100644
--- a/src/crypto/Crypto.java
+++ b/src/crypto/Crypto.java
@@ -5,6 +5,39 @@
 public class Crypto {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
-	// write your code here
+
+        String target = scanner.nextLine();
+//        String message = "Wabc";
+        String message = scanner.nextLine();
+        int offset = scanner.nextInt();
+
+        if(target.equals("enc")){
+            System.out.println(enc(message, offset));
+        } else if(target.equals("dec")){
+            System.out.println(dec(message, offset));
+        }
+
+    }
+    public static String enc(String originalStr, int offset){
+        return offsetAll(originalStr, offset);
+    }
+
+    public static String dec(String originalStr, int offset){
+        return offsetAll(originalStr, -offset);
+    }
+    public static String offsetAll(String originalStr, int offset){
+        final int lettersStar = 97;
+        final int lettersAmount = 26;
+
+        StringBuilder out = new StringBuilder();
+        char[] letters = new char[originalStr.length()];
+        originalStr.getChars(0, originalStr.length(), letters, 0  );
+
+        for (int letter : letters){
+            letter = (letter + offset);
+            out.append((char)letter);
+        }
+
+        return out.toString();
     }
 }

From 6c7b8f772fb144087700d4186455ad497ce7a8f5 Mon Sep 17 00:00:00 2001
From: Nikita Karpov <bonilka@gmail.com>
Date: Fri, 14 Dec 2018 20:45:21 +0300
Subject: [PATCH 2/2] Using command-line arguments

---
 src/crypto/Crypto.java | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/src/crypto/Crypto.java b/src/crypto/Crypto.java
index 7851fd1..1a5cf53 100644
--- a/src/crypto/Crypto.java
+++ b/src/crypto/Crypto.java
@@ -6,10 +6,22 @@ public class Crypto {
     public static void main(String[] args) {
         Scanner scanner = new Scanner(System.in);
 
-        String target = scanner.nextLine();
-//        String message = "Wabc";
-        String message = scanner.nextLine();
-        int offset = scanner.nextInt();
+        String target;
+        if(args.length > 1 && args[0].equals("-mode")){
+            target = args[1];
+        } else{
+            target = "enc";
+        }
+
+        String message;
+        int offset;
+        if(args.length == 6 && args[4].equals("-data")){
+            message = args[5];
+            offset= Integer.parseInt(args[3]);
+        } else{
+            message = scanner.nextLine();
+            offset = scanner.nextInt();
+        }
 
         if(target.equals("enc")){
             System.out.println(enc(message, offset));