zhouxy108/hutool
1
0
Fork 0
mirror of https://gitee.com/chinabugotech/hutool.git synced 2025-07-21 15:09:48 +08:00
Code Issues Packages Projects Releases Wiki Activity

阶乘计算优化

Browse Source
This commit is contained in:
neko
2020-09-28 14:28:55 +08:00
committed by GitHub
parent 870ea9a329
commit b06d499279
1 changed files with 6 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
View File

@@ -241,10 +241,16 @@ public class NumberUtilTest {
long factorial = NumberUtil.factorial(0);
Assert.assertEquals(1, factorial);
Assert.assertEquals(1L, NumberUtil.factorial(1));
Assert.assertEquals(1307674368000L, NumberUtil.factorial(15));
Assert.assertEquals(2432902008176640000L, NumberUtil.factorial(20));
factorial = NumberUtil.factorial(5, 0);
Assert.assertEquals(120, factorial);
factorial = NumberUtil.factorial(5, 1);
Assert.assertEquals(120, factorial);
Assert.assertEquals(2432902008176640000L, NumberUtil.factorial(20, 0));
}
@Test