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simona1@sfusd.edu string1 > getLastThreeChar
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Given a string, return a string formed by its last 3 characters. The string length will be at least 3. (Difficulty Level: 2)


getLastThreeChar("Hello") → "llo"
getLastThreeChar("Cool") → "ool"
getLastThreeChar("Mississippi") → "ppi"

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public String getLastThreeChar(String s){ }

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