Given a string and an integer index, return a new string with the following transformations applied: 1. Delete the character at the index (assume it will be within bounds) 2. Reverse the resulting string Hint: See the StringBuilder class in the Java API docs. Examples: problem4_deleteAndReverse ("Robert", 2) // returns "treoR" problem4_deleteAndReverse ("Robert", 0) // returns "trebo" problem4 deleteAndReverse ("H", 0) // returns

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Methods of StringBuilder class

The StringBuilder class can be used to create mutable strings. The methods defined in the StringBuilder class are widely used to manipulate and concatenate strings. It is a non-synchronized class which has public methods that can be accessed by multiple threads. It is not thread-safe.