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commonPrefix与commonSuffix支持空字符串(前缀/后缀)匹配

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This commit is contained in:
zzzj 2023-03-24 11:44:30 +08:00
parent 7bed31e13f
commit 8b0b21f742
2 changed files with 18 additions and 2 deletions
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4
hutool-core/src/main/java/cn/hutool/core/text/CharSequenceUtil.java
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@ -4594,7 +4594,7 @@ public class CharSequenceUtil {
* @return 字符串1和字符串2的公共前缀
*/
public static CharSequence commonPrefix(CharSequence str1, CharSequence str2) {
if (isBlank(str1) || isBlank(str2)) {
if (isEmpty(str1) || isEmpty(str2)) {
return EMPTY;
}
final int minLength = Math.min(str1.length(), str2.length());
@ -4618,7 +4618,7 @@ public class CharSequenceUtil {
* @return 字符串1和字符串2的公共后缀
*/
public static CharSequence commonSuffix(CharSequence str1, CharSequence str2) {
if (isBlank(str1) || isBlank(str2)) {
if (isEmpty(str1) || isEmpty(str2)) {
return EMPTY;
}
int str1Index = str1.length() - 1;

16
hutool-core/src/test/java/cn/hutool/core/text/CharSequenceUtilTest.java
View File

@ -183,6 +183,14 @@ public class CharSequenceUtilTest {
Assert.assertEquals("中文", CharSequenceUtil.commonPrefix("中文english", "中文french"));
// { space * 10 } + "abc"
final String str1 = CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 10) + "abc";
// { space * 5 } + "efg"
final String str2 = CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 5) + "efg";
// Expect common prefix: { space * 5 }
Assert.assertEquals(CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 5), CharSequenceUtil.commonPrefix(str1, str2));
}
@Test
@ -207,6 +215,14 @@ public class CharSequenceUtilTest {
Assert.assertEquals("中文", CharSequenceUtil.commonSuffix("english中文", "Korean中文"));
// "abc" + { space * 10 }
final String str1 = "abc" + CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 10);
// "efg" + { space * 15 }
final String str2 = "efg" + CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 15);
// Expect common suffix: { space * 10 }
Assert.assertEquals(CharSequenceUtil.repeat(CharSequenceUtil.SPACE, 10), CharSequenceUtil.commonSuffix(str1, str2));
}
}