感悟 (2015.01.01 — 2017.03.31)

随笔：

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题目：利用下面的描述，解密上面的内容。

描述：计算机，计算机，恩……，计算机，0 和 1 玄奥之门。

/** 加密类*/public class CharToUnicode {// 多少...比较...合适...呢？I think，文中有吧……private static int 玄机 = "hello world".compareTo("hello world");private static String str = "你好！";public static void main(String[] args) {System.out.print(getUnicode(str));}public static String getUnicode(String source){String returnUniCode=null;String uniCodeTemp=null;for(int i=0;i<source.length();i++){String temp = Integer.toHexString((int)source.charAt(i) + 玄机);if (temp.length() == 1) {uniCodeTemp = "000" + temp;} else if (temp.length() == 2) {uniCodeTemp = "00" + temp;} else if (temp.length() == 3) {uniCodeTemp = "0" + temp;} else {uniCodeTemp = temp;}returnUniCode = returnUniCode == null ? uniCodeTemp : returnUniCode + uniCodeTemp;}return returnUniCode;}}

/** 解密类*/public class UnicodeToChar {// 多少...比较...合适...呢？I think，文中有吧……private static int 玄机 = "hello world".compareTo("hello world");private static String str = "4f60597dff01";public static void main(String[] args){System.out.println(getChar(str));}public static String getChar(String source){StringBuffer sBuffer = new StringBuffer();int len = source.length();for (int i = 0; i < len; i += 4) {String temp = source.substring(i, 4 + i);char a = (char)(Integer.parseInt(temp, 16) - 玄机);sBuffer.append(a);}return sBuffer.toString();}}