Tag Archives: Math

Trigonometric Table Generator Application in PHP

Hi People

This PHP Application is for generating a Trigonometric Table for Sine, Cosine and Tangent Values.

In this we have a HTML form where the user need to enter the Range of Degrees for which she wants to generate a Trigonometric Table. 

This Numbers are send as parameters in a PHP page which produces the Table.

PHP Math Functions have been used to find the values

sin(), cos(), tan() functions have been used to find the respective values.

TrigoTableForm.html


<html>
<head>
<title> Trigonometric Table Generator Form</title>

<style type="text/css">
	/*Style for Table*/

	table
	{
	font-family:Arial; font-size:15px;

	color:navy; font-weight: normal;

	border: 1px solid red;

	text-align: center;

	border-collapse:collapse; width:30%;
	}

	h2
	{
	font-family:Arial; font-size:25px;

	color: red; font-weight: bold;

	text-decoration:underline
	}

</style>
</head>

<body>

<h2> Trigonometric Table Generator </h2>

<form action="TrigoTable.php" method="post">

<table border="0" cellpadding="10">

<tr>
<td> From: </td>
<td> <input type="textbox" name="fangle"> </td>
</tr>

<tr>
<td> To:  </td>
<td> <input type="textbox" name="tangle"></td>
</tr>

<tr>
<td> Interval:  </td>
<td> <input type="textbox" name="interval"></td>
</tr>

 <tr>
 <td colspan="2" align="center"> <br /> <br />
 <input type="submit" value="Submit">
 <input type="reset" value="Reset"></td>
 </tr>
</table>

*Acceptable range is from 0 to 360 degrees.
</form>
</body>
</html>

Snapshot of the o/p

TrigoTable.php

<html>
<head>
	<title>Trigonometric Table</title>

	<style type="text/css">
	/*Style for Table*/

	table
	{
	font-family:Arial; font-size:15px;

	color:navy; font-weight: normal;

	border: 1px solid navy;

	text-align: center;

	border-collapse:collapse; width:30%;
	}

	th
	{
	font-family:Arial; font-size:16px;

	color:black; font-weight: bold;

	text-align: center;
	}

	td
	{
	height:35px;
	}
	/*Style for The Heading*/

	h2
	{
	font-family:Arial; font-size:20px;

	color: blue; font-weight: bold; text-align: center;

	text-decoration:underline
	}

</style>
</head>

<body>
<?php

$fangle=$_POST['fangle'];
$tangle=$_POST['tangle'];
$interval=$_POST['interval'];

if ($fangle>$tangle || $fangle>360 || $fangle<0 || $tangle<=0 || $tangle>360)
	echo "Valid range is 0 to 360, please enter the correct range.";
else if($interval<=0 || $interval>360 || $interval>$tangle)
    echo "Interval entered is invalid.Please enter the correct interval.";

else
{
	echo "<table border='1' align='center' bgcolor='#E0FFFF' cellpadding='10'>";
	echo "<tr>";
	echo " <td align='center' colspan='4' bgcolor='#87CEEB'><h2>Trigonometic Table</h2></td>";
	echo "</tr>";

   echo "<tr>";
   echo "<th>Degree</th>";
   echo "<th>Sine</th>";
   echo "<th>Cosine</th>";
   echo "<th>Tangent</th>";
   echo "</tr>";

	for($i=$fangle;$i<=$tangle;$i+=$interval)
	{
		$sine=sin(deg2rad($i));
	    $cosine=cos(deg2rad($i));
	    if($cosine==0)
			$tangent="Infinity";
		else
		    $tangent=tan(deg2rad($i));

		  echo "<tr>";
		  echo "<td>$i</td>";
		  echo "<td>$sine</td>";
		  echo "<td>$cosine</td>";
		  echo "<td>$tangent</td>";
		  echo "</tr>";
	}

	echo "</table>";
}
?>
</body>
</html>

Snapshot of the o/p

Decimal Number Conversion Program in PHP

Hi People

This PHP Application is for generating a Decimal Number Conversion Table to Binary, Hexadecimal and Octal Numbers.

In this we have a HTML form where the user need to enter the Starting and the Ending Decimal Number for which she wants to generate a Number Conversion Table. 

This Numbers are send as parameters in a PHP page which produces the Table.

PHP Math Functions

decbin(), dechex(), decoct() have been used for doing the conversion.

NumberConversionForm.html

<html>
<head>
<title> Table Generator-Decimal Number to Binary, Hexadecimal and Octal </title>
</head>

<body>

<h2><u><font color="Blue" face="verdana"> Table Generator- Decimal Number to Binary, Hexadecimal and Octal </font></u></h2>
<form action="NumberConversion.php" method="post">

<table border="0">

<tr>
<td> <b>Enter the Starting Decimal No: <br/>
*Starting No should be smaller than Ending No.</b> </td>
<td> <input type="textbox" name="startNo"> </td>
</tr>

<tr>
<td> <b>Enter the Ending Decimal No: </b> </td>
<td> <input type="textbox" name="endNo"></td>
</tr>

 <tr>
 <td colspan="2" align="center"> <input type="submit" value="Submit"> </td>
 </tr>
</table>

</form>
</body>
</html>

NumberConversion.php- The PHP Program which does all the work

<html>
<head>
	<title> Table-Decimal Number to Binary, Hexadecimal and Octal</title>

	<style type="text/css">
	/*Style for Table*/

	table
	{
	font-family:Arial; font-size:15px;

	color:navy; font-weight: bold;

	border: 1px solid green;

	text-align: center;

	border-collapse:collapse; width:30%;
	}

	th
	{
	font-family:Arial; font-size:16px;

	color:black; font-weight: bold;

	text-align: center;
	}

	td
	{
	height:35px;
	}
	/*Style for The Heading*/

	h2
	{
	font-family:Arial; font-size:20px;

	color: green; font-weight: bold; text-align: center;

	text-decoration:underline
	}

</style>
</head>

<body>
<?php

$startNo = $_POST['startNo'];
$endNo = $_POST['endNo'];

$counter = 0;
if($startNo > $endNo)
{
	echo "Please Enter Correct numbers <br>";

}

else
{
	echo "<table border='1' align='center' bgcolor='#E0FFFF'>";
	echo "<tr>";
	echo " <td align='center' colspan='4' bgcolor='#7FFFD4'><h2>Decimal Number Convertor Table</h2></td>";
	echo "</tr>";

   echo "<tr>";
   echo "<th>Decimal Number</th>";
   echo "<th>Binary Number</th>";
   echo "<th>Hexadecimal Number</th>";
   echo "<th>Octal Number</th>";
   echo "</tr>";

for ($counter = $startNo; $counter <= $endNo; $counter++)
{
  echo "<tr>";
  echo "<td>".$counter."</td>";
  echo "<td>".decbin($counter)."</td>";
  echo "<td>".dechex($counter)."</td>";
  echo "<td>".decoct($counter)."</td>";
  echo "</tr>";
}

echo "</table>";
}
?>
</body>
</html>

Snapshot of the o/p

Thats it. A simple PHP Program showing the power of PHP. :D

Java program checking whether a Number is Palindrome

//Java program checking whether a Number is Palindrome

PalindromeNumberDemo.java


public class PalindromeNumberDemo
{
 public static void main(String[] args)
 {

   int originalNumber=1441;
	 int temp, reversedNumber=0;
	 int number = originalNumber;
	//reverse the number

	while(number > 0){
		temp = number % 10;
		number = number / 10;
		reversedNumber = reversedNumber * 10 + temp;

	}

	if(originalNumber == reversedNumber)

	System.out.println(originalNumber + " is a palindrome number");

	else

	System.out.println(originalNumber + " is not a palindrome number");
	}
 }

To check whether a number is palindrome just reverse the number and then match the original and reverse number, if they match, the number is a palindrome.

e.g 1441=1441 so 1441 is a Palinrome.

2345!=5432 so 2345 is not a Palindrome.

PalindromeNumberDemo

Java Program finding the reverse of a given number

//Java Program finding the reverse of a given number

 

ReverseNumberDemo.java


public class ReverseNumberDemo
{
 public static void main(String[] args)
 {

	 int originalNumber=2345;
	 int temp, reversedNumber=0;
	 int number = originalNumber;
	//reverse the number

	while(number > 0){
		temp = number % 10;
		number = number / 10;
		reversedNumber = reversedNumber * 10 + temp;
	}

	System.out.println("Reverse of "+originalNumber+ " is "+reversedNumber);
	}
}

Dry Run

/*

* temp = 2345 % 10 = 5 temp stores remainder

* number = 2345 / 10 = 234 number stores quotient the remaining number

*

*  temp   number  reveresedNumber

*   5      234      0*10+5= 5

*   4      23       5*10+4= 54

*   3      2        54*10+3= 543

*   2      0        543*10+2 = 5432

*

* */

o/p

ReverseNumber