The first time you sign into developerWorks, a profile is created for you. Select information in your developerWorks profile is displayed to the public, but you may edit the information at any time. Your first name, last name (unless you choose to hide them), and display name will accompany the content that you post.
All information submitted is secure.
![Close [x]](http://dw1.s81c.com/i/c.gif){kind=small}
The first time you sign in to developerWorks, a profile is created for you, so you need to choose a display name. Your display name accompanies the content you post on developerworks.
Please choose a display name between 3-31 characters. Your display name must be unique in the developerWorks community and should not be your email address for privacy reasons.
All information submitted is secure.
With this handy applet, you can evaluate mathematical expressions step by step
public static int pos_open_parenthesis( Vector tokens, int closed_parenthesis )
{
int i;
Token t;
i=closed_parenthesis-2;
while ( i>=0 )
{
t=(Token)tokens.elementAt( i );
if ( t.mark=='(' )
{
return i;
}
i--;
}
return 0;
}
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