class Animal
{
static String str = "3.4E-5";
static double 轉換後的數 = 0;
public static void main(String[] args)
{
Animal animal = new Animal();
轉換後的數 = animal.conversion(str);
double[] buf = {2,0.1234,轉換後的數,0.1234,0.1234};
String[] ss = new String[buf.length];
Arrays.sort(buf);//從小到大排列
for(int i = 0; i < buf.length;i++)
{
if(buf[i] == 轉換後的數)//如果是原來的科學計數，將原來的str存至ss數組
{
ss[i] = str;
}
else
ss[i] = buf[i] + "";
}//打印出排列後的結果
System.out.print("比較後:" );
for(String s : ss)
System.out.print(s + " "); }
//將科學計數轉換成正常數字
public double conversion(String str)
{
String[] s = str.split("E-");
double num1 = Double.parseDouble(s[0]);
double num2 = Double .parseDouble(s[1]);
return num1 * Math.pow(10d, num2);
}
} 運行結果：比較後:0.1234 0.1234 0.1234 2.0 3.4E-5