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CodingBat code practice


String-1 > extraEnd
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Given a string, return a new string made of 3 copies of the last 2 chars of the original string. The string length will be at least 2.

extraEnd("Hello") → "lololo"
extraEnd("ab") → "ababab"
extraEnd("Hi") → "HiHiHi"

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public String extraEnd(String str) { }

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