Large data factorial operation-java High precision Operation __c language

In Java, two classes with High-precision computations are available: BigInteger and BigDecimal BigInteger: Support for arbitrary precision integer Operations BigDecimal: Supports arbitrary precision of fixed-point number, can be accurate currency calculation Please refer to JDK documentation for details Import Java.math.BigDecimal; /** * High Precision operation * @author RSun * @Date 2012-11-7 11:22:04 */ public class Testbiginteger { Private static final long SUM = 10; public static void Main (string[] args) {System.out.println ("Start of large data factorial operation ...") Can be new thread operation "); String s = "1"; for (int i = 1; I <= SUM; i++) { New BigDecimal ("multiplier"). Multiply (new BigDecimal ("factor")). ToString (); BigDecimal stra = new BigDecimal (s); BigDecimal end = new BigDecimal (s); Convert S to BigDecimal BigDecimal re = end.multiply (stra); End*stra s = re.tostring (); Re-assign value to S} System.out.println ("Run complete.") Results: "+s"; } } Output result: Large data factorial operation begins ... Run complete. Results: 3628800