Question : In an analog clock for 25 minutes duration how much does the hour hand will move ? ?? ???? …….. ?????? Answer : 12.5 degree . Explanation : Analog clock is 360 degree. For 60 minutes the hour hand will move 30 degree. So for 30 minutes the hour hand will move … Continue Reading
Category
Interview
Apple puzzle, interview question.
Question: There are 6 people sitting in a room around the table. On top of the table there is a basket with 6 apple in it. All person took one apple each but still one apple was left in the basket. How !! ?? thinking ??? still thinking ??? the answer is very … Continue Reading
How to reverse a number in php without built in functions
A Simple PHP Home work code that returns the reverse of a given number,
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<?php $num = 1234; $rem =0; $rev =0; $originalnum = $num; while($num > 1) { $rem = $num %10; $rev = ($rev * 10)+ $rem; $num = $num /10; } echo "Original Number: ". $originalnum; echo " Reverse : ". $rev; ?> |
The Logic here is simple. First get the given number and extract the final digit. Initially the reverse of the number will be zero, on each iteration multiply the reverse with 10 and add the modulus result.
What is the use of session_id() in PHP ?
Overview of session_id in PHP The session_id() is one of the in built functions in PHP. Almost in all Framework’s and CMS’s it has been utilized to find the current session. In this tutorial we will see how to utilize this session_id() in small applications apart from Framework and CMS. Generally the session_id() will be … Continue Reading
How to toggle character case in PHP without strlower, strupper & ucfirst (inbuilt) and Array function
Toggling between upper and lower case letter is quite challenging. There is a PHP inbuilt function’s which can do this operation PHP: strtoupper – Manual , PHP strtolower() Function & PHP: ucfirst – Manual , the real challenge would be you have to toggle case of the given word without using PHP built in function … Continue Reading
How to reverse a string in PHP without strrev(inbuilt) and Array function
Reverse a string in PHP is pretty simple. PHP provides inbuilt function to reverse a string PHP: strrev – Manual but knowing the logic of how it works is very simple and interesting. In the interview you may come across “Write a PHP function which should reverse the given string, condition u should not use … Continue Reading
JavaScript event bubbling and event capturing made easy
JavaScript event bubbling and event capturing is an important and interesting features of it. Lets see what it is and how it works. Event Bubbling generally works by bottom to top approach that means if you have nested HTML element say for example div, both the parent and child elements have onclick events. So now … Continue Reading
Javascript Event Delegation Model
JavaScript is the main part of web development. Even you can optimize the performance of java script in the web for higher efficiency. Javascript Event Delegation Model model can be implemented for avoiding events to occur recursively through out the HTML Element. The best example for event delegation is if you are creating HTML element dynamically … Continue Reading