CS 402 Assignment #2 spring 2019 solution

Assignment no 2
Spring 2019 solution
Please see the immage below for solution of assignment no 2 of cs 402
Virtual university Pakistan


Task 1:

Derive the regular Expression (RE) for the given TG






Task 2:

Given are two FA1 and FA2. FA1 accepts language containing aa while the FA2 accepts ab or ba. Find the union of both FAs.





 
You can download complete file from here assignment solution complete file

Please like and comment if any problem

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SBI Developers: Get Week no in year from date in PHP

SBI Developers: Get Week no in year from date in PHP: you can get week number in the year from given date in PHP in this given method. <?php $ddate = "2012-10-18" ; $date = ...
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Get Week no in year from date in PHP

you can get week number in the year from given date in PHP in this given method.
<?php
$ddate = "2012-10-18";
$date = new DateTime($ddate);
$week = $date->format("W");
echo "Weeknummer: $week";
?>
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Bootstrap Collapsible Panel With Up/Down Arrow Icon

It is very easy to make dropdwon collapse using bootstrtap
you can use this simple code.
Firstly you have to add these bootstrap files and then this simple code

<!DOCTYPE html>
<html>
<head>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
  <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script>
  <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/js/bootstrap.min.js"></script>
</head>
<!--- CSS -->
<style>
body{
  padding:50px;
  background:#fff;
}
.wrapper{
  width:70%;
}
@media(max-width:992px){
 .wrapper{
  width:100%;
}
}
.panel-heading {
  padding: 0;
    border:0;
}
.panel-title>a, .panel-title>a:active{
    display:block;
    padding:15px;
  color:#555;
  font-size:16px;
  font-weight:bold;
    text-transform:uppercase;
    letter-spacing:1px;
  word-spacing:3px;
    text-decoration:none;
}
.panel-heading  a:before {
   font-family: 'Glyphicons Halflings';
   content: "\e114";
   float: right;
   transition: all 0.5s;
}
.panel-heading.active a:before {
    -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    transform: rotate(180deg);
} 
</style>
<!--- End CSS -->

<body>

<div class="container">

<div class="wrapper center-block">
  <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
  <div class="panel panel-default">
    <div class="panel-heading active" role="tab" id="headingOne">
      <h4 class="panel-title">
        <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
          Collapsible Group Item #1
        </a>
      </h4>
    </div>
    <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="headingTwo">
      <h4 class="panel-title">
        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </a>
      </h4>
    </div>
    <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="headingThree">
      <h4 class="panel-title">
        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
          Collapsible Group Item #3
        </a>
      </h4>
    </div>
    <div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
      <div class="panel-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
</div>
</div>
</div>

</body>
</html>
<javascript>
 $('.panel-collapse').on('show.bs.collapse', function () {
    $(this).siblings('.panel-heading').addClass('active');
  });

  $('.panel-collapse').on('hide.bs.collapse', function () {
    $(this).siblings('.panel-heading').removeClass('active');
  });
</javasript>
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PHP: Loop through dates (from date to date) with strtotime() function

This is very easy way loop through dates (from date to date) with PHP strtotime() function. This example only echo dates, but of course this model can be used more complicated situations.

<?php
 
 

 // Start date
 $date = '2009-12-06';
 // End date
 $end_date = '2020-12-31';

 while (strtotime($date) <= strtotime($end_date)) {
                echo "$date\n";
                $date = date ("Y-m-d", strtotime("+1 day", strtotime($date)));
 }

?>
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php time calculation between am to pm and pm to am

if you want to calculate total time against check in and check out
then
here shown

$timestart = strtotime("09:12:31 am");
$timeend = strtotime("01:51:19 pm");
$time_difference  = $timeend - $timestart;
echo gmdate("h:i:s",$time_difference);

here is gmdate()
Format a GMT/UTC date and time and return the formatted date strings:
<?php
// Prints the day1. echo gmdate("l") . "<br>";

// Prints the day, date, month, year, time, AM or PM2. echo gmdate("l jS \of F Y h:i:s A") . "<br>";

// Prints October 3, 1975 was on a Thursday3. echo "Oct 3, 1975 was on a ".gmdate("l", mktime(0,0,0,10,3,1975)) . "<br>";

// Use a constant in the format parameter4. echo gmdate(DATE_RFC822) . "<br>";

// prints something like: 1975-10-03T00:00:00+00:005. echo gmdate(DATE_ATOM,mktime(0,0,0,10,3,1975));
?>
Results:
1. Tuesday
2. Tuesday 21st of May 2019 05:25:59 AM
3. Oct 3, 1975 was on a Friday
4. Tue, 21 May 19 05:25:59 +0000
5. 1975-10-03T04:00:00+00:00  
Required. Specifies the format of the outputted date string. The following characters can be used:
  • d - The day of the month (from 01 to 31)
  • D - A textual representation of a day (three letters)
  • j - The day of the month without leading zeros (1 to 31)
  • l (lowercase 'L') - A full textual representation of a day
  • N - The ISO-8601 numeric representation of a day (1 for Monday, 7 for Sunday)
  • S - The English ordinal suffix for the day of the month (2 characters st, nd, rd or th. Works well with j)
  • w - A numeric representation of the day (0 for Sunday, 6 for Saturday)
  • z - The day of the year (from 0 through 365)
  • W - The ISO-8601 week number of year (weeks starting on Monday)
  • F - A full textual representation of a month (January through December)
  • m - A numeric representation of a month (from 01 to 12)
  • M - A short textual representation of a month (three letters)
  • n - A numeric representation of a month, without leading zeros (1 to 12)
  • t - The number of days in the given month
  • L - Whether it's a leap year (1 if it is a leap year, 0 otherwise)
  • o - The ISO-8601 year number
  • Y - A four digit representation of a year
  • y - A two digit representation of a year
  • a - Lowercase am or pm
  • A - Uppercase AM or PM
  • B - Swatch Internet time (000 to 999)
  • g - 12-hour format of an hour (1 to 12)
  • G - 24-hour format of an hour (0 to 23)
  • h - 12-hour format of an hour (01 to 12)
  • H - 24-hour format of an hour (00 to 23)
  • i - Minutes with leading zeros (00 to 59)
  • s - Seconds, with leading zeros (00 to 59)
  • u - Microseconds (added in PHP 5.2.2)
  • e - The timezone identifier (Examples: UTC, GMT, Atlantic/Azores)
  • I (capital i) - Whether the date is in daylights savings time (1 if Daylight Savings Time, 0 otherwise)
  • O - Difference to Greenwich time (GMT) in hours (Example: +0100)
  • P - Difference to Greenwich time (GMT) in hours:minutes (added in PHP 5.1.3)
  • T - Timezone abbreviations (Examples: EST, MDT)
  • Z - Timezone offset in seconds. The offset for timezones west of UTC is negative (-43200 to 50400)
  • c - The ISO-8601 date (e.g. 2013-05-05T16:34:42+00:00)
  • r - The RFC 2822 formatted date (e.g. Fri, 12 Apr 2013 12:01:05 +0200)
  • U - The seconds since the Unix Epoch (January 1 1970 00:00:00 GMT)
and the following predefined constants can also be used (available since PHP 5.1.0):
  • DATE_ATOM - Atom (example: 2013-04-12T15:52:01+00:00)
  • DATE_COOKIE - HTTP Cookies (example: Friday, 12-Apr-13 15:52:01 UTC)
  • DATE_ISO8601 - ISO-8601 (example: 2013-04-12T15:52:01+0000)
  • DATE_RFC822 - RFC 822 (example: Fri, 12 Apr 13 15:52:01 +0000)
  • DATE_RFC850 - RFC 850 (example: Friday, 12-Apr-13 15:52:01 UTC)
  • DATE_RFC1036 - RFC 1036 (example: Fri, 12 Apr 13 15:52:01 +0000)
  • DATE_RFC1123 - RFC 1123 (example: Fri, 12 Apr 2013 15:52:01 +0000)
  • DATE_RFC2822 - RFC 2822 (Fri, 12 Apr 2013 15:52:01 +0000)
  • DATE_RFC3339 - Same as DATE_ATOM (since PHP 5.1.3)
  • DATE_RSS - RSS (Fri, 12 Aug 2013 15:52:01 +0000)
  • DATE_W3C - World Wide Web Consortium (example: 2013-04-12T15:52:01+00:00)
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