refactor HashMapOperation
refactor HashMapOperation
refactored
Merge branch 'master' of https://github.com/fatihhamurcu/CorrelationAnalysis

Conflicts:
	DataScienceApprenticeship/.classpath
	DataScienceApprenticeship/.project
	DataScienceApprenticeship/execBin/dataScience/correlationAnalysis/dataProcessor/DataProcessor.class
	DataScienceApprenticeship/execBin/dataScience/correlationAnalysis/helper/HashMapOperation.class
	DataScienceApprenticeship/execBin/dataScience/correlationAnalysis/helper/HashMapOperationTest.class
	DataScienceApprenticeship/execBin/dataScience/correlationAnalysis/helper/MapOperation.class
	DataScienceApprenticeship/sourceCode/dataScience/correlationAnalysis/CorrelationAnalysis.java
	DataScienceApprenticeship/sourceCode/dataScience/correlationAnalysis/dataProcessor/DataProcessor.java
	DataScienceApprenticeship/sourceCode/dataScience/correlationAnalysis/helper/HashMapOperation.java
	DataScienceApprenticeship/sourceCode/dataScience/correlationAnalysis/helper/MapOperation.java
	DataScienceApprenticeship/testCode/dataScience/correlationAnalysis/helper/HashMapOperationTest.java
	DataScienceApprenticeship/testCode/dataScience/correlationAnalysis/helper/MapOperationTest.java