Add CollectionUtil.sortByValue()

[Linary]

Change-Id: I9152cc7d8fc5a23e3407118ed09c9b6ac116eed9

[codecov]

Codecov Report

Merging #13 into master will increase coverage by 0.9%.
The diff coverage is 100%.

@@             Coverage Diff             @@
##             master      #13     +/-   ##
===========================================
+ Coverage     24.04%   24.94%   +0.9%     
- Complexity        0      142    +142     
===========================================
  Files            43       43             
  Lines          1277     1291     +14     
  Branches        229      188     -41     
===========================================
+ Hits            307      322     +15     
+ Misses          937      931      -6     
- Partials         33       38      +5

Impacted Files	Coverage Δ	Complexity Δ
...ava/com/baidu/hugegraph/version/CommonVersion.java	0% <ø> (-50%)	0 <0> (ø)
.../java/com/baidu/hugegraph/util/CollectionUtil.java	81.7% <100%> (+36.39%)	22 <6> (+22)	⬆️
...ain/java/com/baidu/hugegraph/util/VersionUtil.java	37.14% <0%> (-23.43%)	5% <0%> (+5%)
...u/hugegraph/iterator/FlatMapperFilterIterator.java	78.57% <0%> (-7.15%)	5% <0%> (+5%)
...a/com/baidu/hugegraph/iterator/FilterIterator.java	78.57% <0%> (-7.15%)	6% <0%> (+6%)
...a/com/baidu/hugegraph/iterator/MapperIterator.java	86.66% <0%> (-6.67%)	6% <0%> (+6%)
...main/java/com/baidu/hugegraph/testutil/Assert.java	47.05% <0%> (-5.89%)	3% <0%> (+3%)
...m/baidu/hugegraph/iterator/FlatMapperIterator.java	81.48% <0%> (-3.71%)	11% <0%> (+11%)
...m/baidu/hugegraph/iterator/ExtendableIterator.java	80.95% <0%> (-2.39%)	16% <0%> (+16%)
.../main/java/com/baidu/hugegraph/event/EventHub.java	83.09% <0%> (-1.41%)	27% <0%> (+27%)
... and 4 more

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[javeme]

[WARN] Unable to instrument file /home/travis/build/hugegraph/hugegraph-common/target/generated-classes/cobertura/com/baidu/hugegraph/util/CollectionUtil.class
java.lang.IllegalArgumentException: INVOKESPECIAL/STATIC on interfaces require ASM 5
cobertura/cobertura#248
MER-C/wiki-java@c0adbee

[javeme]

[WARN] JavaNCSS got an error while parsing the java file /home/travis/build/hugegraph/hugegraph-common/src/main/java/com/baidu/hugegraph/date/SafeDateFormat.java

ParseException in STDIN

Last useful checkpoint: "com.baidu.hugegraph.date.SafeDateFormatcom.baidu.hugegraph.date.SafeDateFormat.SafeDateFormat(String)"

Encountered " ")" ") "" at line 40, column 51.

done