Practical 19 : Prepare an activity diagram for computing a restaurant bill, there should be charge for each delivered item. The total amount should be subject to tax and service charge of 18% for group of six and more. For smaller groups there should be a blank entry. Any coupons or gift certificates submitted by the customer should be subtracted

Solution:

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Practical 9 : Write an interactive program to print a string entered in a pyramid form. For instance, the string “stream” has to be displayed as follows:

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                  s                s     t              s    t     r          s     t     r    e       s     t    r      e   a    s     t    r     e      a   m Program: public class practical9    {     public static void main(String[] args)     {         int i, j, k;  String str = "Stream";         for (i = 0; i < str.length(); i++)       {             for (j = (str.length() / 2) + 1; j >= i; j--)  ...
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