RecursionPractice-1

My solutions to: https://codingbat.com/java/Recursion-1

If you have any suggestions or questions about my code, please feel free to contact me:)

factorial	bunnyEars	fibonacci
bunnyEars2	triangle	sumDigits
count7	count8	powerN
countX	countHi	changeXY
changePi	noX	array6
array11	array220	allStar
pairStar	endX	countPairs
countAbc	count11	stringClean
countHi2	parenBit	nestParen
strCount	strCopies	strDist

When you come into String, notice that:

1. The result of "hello".substring(0,2) is "he", not "hel"
2. If you want to judge whether two Strings are equal, you should use str1.equal(str2), not ==