Quyend

[danhquyen0109]

如果是文字类 PR，请按照 中文排版指北 进行编写(提交时可删除该提示)。

What kind of change does this PR introduce? (check at least one)

• [ ] Bugfix
• [ ] Feature
• [ ] Code style update
• [ ] Refactor
• [ ] Build-related changes
• [x] Other, please describe: add some test in TwoSumTest.java

The description of the PR:

Other information:

[crossoverJie]

No need for test code.