How to print String buffer lines from last to first order

Question

I have requirement to print String buffer lines as last to first order.

Example :toString of Stringbuffer method is printing below output:

this
is
some
text

Desired output:

text
some
is
this

Answer 1

What you could do is to create an array, iterate over it.

String s = new String("this\nis\nsome\ntext");
String []tokens = s.split("\n");
for(int i = tokens.length - 1; i >= 0; --i)
   System.out.println(tokens[i]);

---

 StringBuffer s = new StringBuffer("this\nis\nsome\ntext");
    String []tokens = s.toString().split("\n");
    for(int i = tokens.length - 1; i >= 0; --i)
       System.out.println(tokens[i]);

---

A better memory less approach would be.

StringBuffer s = new StringBuffer("this\nis\nsome\ntext");
        String word = ""; 
        for(int i = s.length() - 1; i >= 0; --i)
        {
            if(s.charAt(i) != '\n')
            {
                word = s.charAt(i) + word;
            }
            else{
                System.out.println(word);
                word = "";
            }
        }
        if(!word.equals(""))
            System.out.println(word);