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CodingBat code practice


String-1 > lastTwo
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Given a string of any length, return a new string where the last 2 chars, if present, are swapped, so "coding" yields "codign".

lastTwo("coding") → "codign"
lastTwo("cat") → "cta"
lastTwo("ab") → "ba"

...Save, Compile, Run (ctrl-enter)

public String lastTwo(String str) { }

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