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Alex Rivera
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I'm trying to solve this CodingBat problem : Return true if the given string contains an appearance of "xyz" where the xyz is not directly preceeded by a period (.). So "xxyz" counts but "x.xyz" does not. xyzThere("abcxyz") → true xyzThere("abc.xyz") → false xyzThere("xyz.abc") → true I'm trying to solve this with a regex, but I'm unsure how to handle where the xyz is not directly preceeded by a period requirement. My solution for the problem without the constraint is this: public boolean xyzThere(String str) { return str.matches(".*xyz.*"); } Any idea how to handle the said constraint with a regex?
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