// A short program to demonstrate a StringBuilder which is a mutable String

public class StringBuilderExample
{
	public static void main(String[] args)
	{
		StringBuilder sb = new StringBuilder(100);			// this StringBuilder can store up to 100 chars
		for(int i=0;i<26;i++)
			sb.append((char)(i+'a'));						// fill this String with the characters 'a' through 'z' one at a time
		System.out.println(sb);								// show the result
		for(int i=25;i>=0;i=i-3)							// starting at the tail end, delete every third character
			sb.deleteCharAt(i);
		sb.reverse();										// reverse the order of the chars in the String
		System.out.println(sb);								// output the result of the deletions and reversal
	}
}