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User parameterized with ignoring case, fix bug.

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designatednerd committed May 20, 2015
1 parent ffc05d6 commit 161c101b3d7d3aecfc82dc428f28ad1541730ca2
@@ -79,4 +79,10 @@ public void findCommonLetters() {
String foundCommonLetters = mLetterFinder.commonLetters(mFirstString, mSecondString);
assertEquals(mExpectedCommonLetters, foundCommonLetters);
}
@Test
public void findCommonLettersIgnoringCase() {
String foundCommonLetters = mLetterFinder.commonLettersCaseInsensitive(mFirstString, mSecondString);
assertEquals(mExpectedCommonLetters, foundCommonLetters);
}
}
@@ -31,6 +31,10 @@ public String commonLetters(String aFirstString, String aSecondString) {
}
public String commonLettersCaseInsensitive(String aFirstString, String aSecondString) {
return commonLetters(aFirstString.toLowerCase(), aSecondString.toLowerCase());
if (aFirstString != null && aSecondString != null) {
return commonLetters(aFirstString.toLowerCase(), aSecondString.toLowerCase());
} else {
return null;
}
}
}

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