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优化ArrayUtil中isSorted相关方法，并增加测试用例；

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emptypoint
2023-01-20 18:55:59 +08:00
parent ce3881fc78
commit 4f3d78d80d
2 changed files with 133 additions and 25 deletions
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37
hutool-core/src/test/java/cn/hutool/core/util/ArrayUtilTest.java
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@@ -636,4 +636,41 @@ public class ArrayUtilTest {
Assert.assertArrayEquals(new int[]{2, 3, 4}, ArrayUtil.sub(arr, -1, 1));
Assert.assertArrayEquals(new int[]{2, 3, 4}, ArrayUtil.sub(arr, -4, -1));
}
@Test
public void isSortedTest() {
final Integer[] a = {1, 1, 2, 2, 2, 3, 3};
Assert.assertTrue(ArrayUtil.isSorted(a));
Assert.assertTrue(ArrayUtil.isSorted(a, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(a, null));
final Integer[] b = {1, 1, 1, 1, 1, 1};
Assert.assertTrue(ArrayUtil.isSorted(b));
Assert.assertTrue(ArrayUtil.isSorted(b, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(a, null));
final Integer[] c = {3, 3, 2, 2, 2, 1, 1};
Assert.assertTrue(ArrayUtil.isSorted(c));
Assert.assertTrue(ArrayUtil.isSorted(c, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(a, null));
Assert.assertFalse(ArrayUtil.isSorted(null));
Assert.assertFalse(ArrayUtil.isSorted(null, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(null, null));
final Integer[] d = {};
Assert.assertFalse(ArrayUtil.isSorted(d));
Assert.assertFalse(ArrayUtil.isSorted(d, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(d, null));
final Integer[] e = {1};
Assert.assertTrue(ArrayUtil.isSorted(e));
Assert.assertTrue(ArrayUtil.isSorted(e, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(e, null));
final Integer[] f = {1, 2};
Assert.assertTrue(ArrayUtil.isSorted(f));
Assert.assertTrue(ArrayUtil.isSorted(f, Integer::compareTo));
Assert.assertFalse(ArrayUtil.isSorted(f, null));
}
}