标题：复数幂

public class demo5 {      public static void main(String[] args) {         try {             PrintStream ps = System.out;             PrintStream prs = new PrintStream(new File("C:\\Users\\Laptop\\Desktop\\ans\\ans.txt"));             System.setOut(prs);             work(123456);             System.setOut(ps);         } catch (FileNotFoundException e) {             e.printStackTrace();         }     }      private static void work(int n) {         BigInteger x = BigInteger.valueOf(2);         BigInteger y = BigInteger.valueOf(3);          for (int i = 1; i < n; i++) {             BigInteger tmp1 = x.multiply(BigInteger.valueOf(2)).subtract(y.multiply(BigInteger.valueOf(3)));             BigInteger tmp2 = x.multiply(BigInteger.valueOf(3)).add(y.multiply(BigInteger.valueOf(2)));              x = tmp1;             y = tmp2;         }         System.out.println(x + "" + y + "i");// 输出结果     } }

划重点，这个输出到文件代码要记。

来源：博客园

作者：hardhp74520

链接：https://www.cnblogs.com/hardhp74520/p/11739919.html