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CodingBat code practice

orion.a.smith@gmail.com apcsa-strings

Description:AP CS A Strings (Unit 2)

String problems (AP Computer Science A)

These problems relate to String operations from Unit 2, Using Objects.

Creating consistent CodingBat solution code

Remember the structure of a CodingBat solution, to keep you from skipping important information. See the apcsa-primitives problem set for the desired solution structure.

This page of String problems is to supplement the ones provided by CodingBat. See the excellent String-1, String-2 and String-3 stock problems for a lot more practice. I wrote my problem set to give a more structured sequence of introductory-level problems to solve.

Very useful introduction! Once you get to a problem in this series, scroll to the bottom of the page and you will see several links to great tutorials about Strings right here on the CodingBat site.

String problems, no loops

These problems will just test your basic knowledge of String methods: equals, length, indexOf and substring. Remember that indexOf and substring each have versions with one and two parameters, which modify the way they work!

apcsaStringsReturnString apcsaStringsReturnLength H apcsaStringsSameLength H apcsaStringsAreEqual H apcsaStringsFirstOccurrence H apcsaStringsOccurrenceAfter apcsaStringsGimmeFirstFive H apcsaStringsGimmeMaybeFirstFive apcsaStringsBabyTalk apcsaStringsGimmeFifth apcsaStringsGimmeFifth2 apcsaStringsGimmeSingle apcsaStringsGimmeLastFive apcsaStringsGimmeLastN apcsaStringsGimmeDoubled apcsaStringsFirstWordOccursLater apcsaStringsFirstFiveEqual apcsaStringsFirstFiveSearch apcsaStringsGimmeLastThreeReversed

String problems, with loops

These problems add in the idea of looping over the characters in a String, which is necessary to solve many more advanced challenges. You will need to combine loops with substrings using index positions to do well on these problems.

apcsaStringsGimmeEvens apcsaStringsGimmeOdds apcsaStringsGimmeNs

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