title: Reading one character at a time from a large string
body: <p>I have a big string having at most 100000 character. Instead of using <code>string.charAt[index]</code> to read a character from the string, I converted that string into char array using <code>string.toCharArray()</code> method and now i am working with <code>charArray[index]</code>. which takes less time than <code>string.charAt[index]</code> method. However i want to know that, is there any other way which is faster than <code>string.toCharArray();</code> method?</p>