Fixed possible NPE#249

JasonHHouse wants to merge 1 commit intokdn251:masterkdn251/interviews:masterfrom

JasonHHouse:#156-NPE-bugs-in-MaximumProductOfWordLengths.java-and-RemoveDuplicatesFromSortedArray.javaJasonHHouse/interviews:#156-NPE-bugs-in-MaximumProductOfWordLengths.java-and-RemoveDuplicatesFromSortedArray.javaCopy head branch name to clipboard