level 2

Author: JavaProgrammerLB

Diff for: pom.xml

@@ -4,6 +4,18 @@
          xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
     <modelVersion>4.0.0</modelVersion>
     <packaging>jar</packaging>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
 
     <groupId>org.example</groupId>
     <artifactId>pythonchallenge</artifactId>

Diff for: src/main/java/com/yitianyigexiangfa/pythonchallenge/Level2.java

@@ -3,16 +3,32 @@
 public class Level2 {
 
     public static void main(String[] args) {
-        char[] chars = str.toCharArray();
-        for (char charElment: chars) {
-//             char newChar = charElment + 2;
-            System.out.print(Character.toString(charElment));
-            System.out.println();
-            int value = Character.getNumericValue(charElment);
-            System.out.print(value);
-        }
+        String result = makeTrans(str);
+        System.out.println(result);
+        String urlBase = "map";
+        String url = makeTrans(urlBase);
+        System.out.println(url);
     }
 
+    public static String makeTrans(String base){
+        byte[] bytes = base.getBytes();
+        int len = bytes.length;
+        byte[] bytes2 = new byte[len];
+        for (int i = 0; i < len; i++) {
+            byte b = bytes[i];
+            if(!Character.isAlphabetic(b)){
+                bytes2[i] = b;
+            } else if(b == 'y'){
+                bytes2[i] = (byte)'a';
+            } else if(b == 'z'){
+                bytes2[i] = (byte)'b';
+            }else {
+                bytes2[i] = (byte) (b + 2);
+            }
+        }
+        String result = new String(bytes2);
+        return result;
+    }
 
 
     private static String str = "g fmnc wms bgblr rpylqjyrc gr zw fylb. rfyrq ufyr amknsrcpq " +

Diff for: src/test/java/com/yitianyigexiangfa/pythonchallenge/Level2Test.java

@@ -7,10 +7,24 @@
 public class Level2Test {
 
     @Test
-    public void charToInteger() {
-        byte[] bytes = "a".getBytes();
-        int digit = bytes[0];
-        assertEquals(digit, 97);
-        System.out.println(digit);
+    public void isAlphabetic() {
+        boolean semicolonIsNotAlphabetic = Character.isAlphabetic(';');
+        assertEquals(false, semicolonIsNotAlphabetic);
+        boolean aIsAlphabetic = Character.isAlphabetic('a');
+        assertEquals(true, aIsAlphabetic);
+        boolean upperCaseAIsAlphabetic = Character.isAlphabetic('Z');
+        assertEquals(true, upperCaseAIsAlphabetic);
+        boolean spaceIsNotAlphabetic = Character.isAlphabetic(' ');
+        assertEquals(false, spaceIsNotAlphabetic);
     }
+
+    @Test
+    public void bytesToString() {
+        String s = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
+        byte[] bytes = s.getBytes();
+        for (int i = 0; i < bytes.length; i++) {
+            System.out.println(bytes[i]);
+        }
+    }
+
 }