ReverseString.java

class ReverseString {

	public static void main(String[] args) {

		int last = args[0].length()-1;
		char[] chars = args[0].toCharArray();
		for (int i = 0; i < args[0].length()/2; i++) {
			char temp = chars[i];
			chars[i] = chars[last];
			chars[last--] = temp;
		}
		System.out.println(new String(chars));
	}

}