java 计算任意字符串的十六进制颜色代码
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Compute hex color code for an arbitrary string
提问by tech20nn
Heading
标题
Is there a way to map an arbitrary string to a HEX COLOR code. I tried to compute the HEX number for string using string hashcode. Now I need to convert this hex number to six digits which are in HEX color code range. Any suggestions ?
有没有办法将任意字符串映射到十六进制颜色代码。我尝试使用字符串哈希码计算字符串的十六进制数。现在我需要将此十六进制数转换为十六进制颜色代码范围内的六位数字。有什么建议 ？
String [] programs = {"XYZ", "TEST1", "TEST2", "TEST3", "SDFSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS"};
for(int i = 0; i < programs.length; i++) {
System.out.println( programs[i] + " -- " + Integer.toHexString(programs[i].hashCode()));
}
回答by M. Jessup
If you don't really care about the "meaning" of the color you can just split up the bits of the int (remove the first for just RGB instead of ARGB)
如果您真的不关心颜色的“含义”，您可以将 int 的位分开（删除第一个仅用于 RGB 而不是 ARGB）
String [] programs = {"XYZ", "TEST1", "TEST2", "TEST3", "SDFSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS"};
for(int i = 0; i < programs.length; i++) {
System.out.println( programs[i] + " -- " + intToARGB(programs[i].hashCode()));
}
....
public static String intToARGB(int i){
return Integer.toHexString(((i>>24)&0xFF))+
Integer.toHexString(((i>>16)&0xFF))+
Integer.toHexString(((i>>8)&0xFF))+
Integer.toHexString((i&0xFF));
}
回答by codaddict
How about anding the hashcodewith 0x00FFFFFF
和hashcode与一起怎么样0x00FFFFFF
回答by NealJMD
I ran into this question while looking for a Ruby solution, so I thought I would add an answer for Ruby in case someone follows the same path I did. I ended up using the following method, which creates the same six digit hex code from a string by using String.hashand the optional base-specifying parameter of Fixnum.to_s. It slices from 1rather than 0to skip negative signs.
我在寻找 Ruby 解决方案时遇到了这个问题，所以我想我会为 Ruby 添加一个答案，以防有人遵循我所做的相同路径。我结束了使用以下的方法，其中从通过使用一个字符串创建相同的六位十六进制代码String.hash和可选的基极-指定参数Fixnum.to_s。它从而1不是0跳过负号切片。
def color_from_string(query)
'#'+query.hash.to_s(16).slice(1,6)
end
