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阶乘优化

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neko 2020-09-28 17:13:25 +08:00 committed by GitHub
parent cdee2f32b4
commit f253ab9269
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hutool-core/src/test/java/cn/hutool/core/util/NumberUtilTest.java
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@ -249,7 +249,7 @@ public class NumberUtilTest {
Assert.assertEquals(120, factorial);
factorial = NumberUtil.factorial(5, 1);
Assert.assertEquals(120, factorial);
Assert.assertEquals(5, NumberUtil.factorial(5, 4));
Assert.assertEquals(2432902008176640000L, NumberUtil.factorial(20, 0));
}