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+/**%0A * Problem: #344 Reverse String%0A *%0A * Idea: iterate through each character inside the string and append to a new string%0A *%0A * Solutions:%0A *  reverseString: use StringBuilder for efficiently string building%0A */%0Apublic class ReverseString %7B%0A    public String reverseString(String s) %7B%0A        StringBuilder builder = new StringBuilder();%0A        for (int i = s.length() - 1; i %3E= 0; i--) %7B%0A            builder.append(s.charAt(i));%0A        %7D%0A        return builder.toString();%0A    %7D%0A%7D%0A

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