Java/C2/while-loop/Gujarati - Revision history

Pratik kamble at 07:16, 23 June 2014

2014-06-23T07:16:20Z

Krupali at 07:28, 6 August 2013

2013-08-06T07:28:55Z

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Krupali at 11:52, 5 August 2013

2013-08-05T11:52:08Z

Krupali at 11:51, 5 August 2013

2013-08-05T11:51:42Z

Krupali: Created page with ' {| border=1 || ''Time''' || '''Narration''' |- |- | 00:02 | Welcome to the spoken tutorial on''' While Loop '''in java'''.''' |- | 00:06 | In this tutorial, you will learn …'

2013-08-05T10:50:07Z

Created page with ' {| border=1 || ''Time''' || '''Narration''' |- |- | 00:02 | Welcome to the spoken tutorial on''' While Loop '''in java'''.''' |- | 00:06 | In this tutorial, you will learn …'

New page

{| border=1
|| ''Time'''
|| '''Narration'''

|-
|-
| 00:02
| Welcome to the spoken tutorial on''' While Loop '''in java'''.'''

|-
| 00:06
| In this tutorial, you will learn '''About the while loop.'''

'''How To use it.'''

|-
| 00:12
| For this tutorial we are using

'''Ubuntu 11.10''',

'''JDK 1.6''' and

'''Eclipse 3.7'''

|-
| 00:21
| To follow this tutorial, you must have knowledge of '''relational operators in Java'''

|-
| 00:26
| If not, for relevant tutorials please visit our website as shown. [http://spoken-tutorial.org/ http][http://spoken-tutorial.org/ ://][http://spoken-tutorial.org/ spoken][http://spoken-tutorial.org/ -][http://spoken-tutorial.org/ tutorial][http://spoken-tutorial.org/ .][http://spoken-tutorial.org/ org]

|-
| 00:36
| Here is the structure of a while loop.

|-
| 00:39
| It has two parts.

|-
| 00:41
| One is the '''loop running condition''' and the second is the '''loop variable.'''

|-
| 00:48
| Let us now look at an example. Switch to Eclipse

|-
| 00:55
| Here We have the eclipse IDE and the skeleton required for rest of the code

|-
| 01:00
| I have created a class WhileDemo and added the main method to it.

|-
| 01:05
| | We shall print numbers from 1 to 10 using a while loop. Type '''''int n = 1'' '''''

|-
| 01:15
| This variable n is going to be our loop variable

|-
| 01:21
| type '''''while ''''in ''parenthesis '''n''' less than or equal to'' '''''10''''' open and close braces

|-
| 01:33
| This condition is called looping running condition.

|-
| 01:37
| It means the loop will run as long as this condition is true.

|-
| 01:42
| In our case, it will run as long as the value of '''n''' is less than or equal to 10.

|-
| 01:47
| And it will stop only when the value of '''n''' become greater than 10.

|-
| 01:53
| Inside the loop, we shall print the value of '''n'''

|-
| 01:58
| '''System.out.println(n);''' and then increment '''n = n + 1;'''

|-
| 02:12
| This way, first 1 is printed and then the value of n becomes 2.

|-
| 02:18
| Then the loop condition is checked.

|-
| 02:21
| Since it is true. 2 is printed and n becomes 3.

|-
| 02:25
| And so on loop progresses untill 10 is printed after that n becomes 11 and the condition is not true and the loop will stop

|-
| 02:37
| So Let us see the code in action.

|-
| 02:39
| Save and run.

|-
| 02:47
| As we can see, the numbers from 1 to 10 are printed.

|-
| 02:52
| Now we shall print numbers from '''50''' to '''40'''

|-
| 02:58
| So We start with 50. ''' Change n = 1 to n = 50'''

|-
| 03:03
| And We go till 40.

|-
| 03:05
| In other words as long as n ''is greater than or equal to ''40. So change the condition to n '' greater than or equal to ''40.

|-
| 03:16
| And since we are looping from a bigger number to a smaller number, we have decrement the loop variable.

|-
| 03:22
| So Change '''n=n + 1''' to '''n=n - 1'''

|-
| 03:27
| Save and run. As we can see, the the numbers 50 to 40 have been printed

|-
| 03:42
| Now we shall print the first 10 multiples of 7.

|-
| 03:48
| To do that, we start with 7

|-
| 03:50
| So change '''n = 50''' to '''n = 7'''and then end with 70.

|-
| 03:57
| Change the condition to n''' ''less than equal to '''''70'''

|-
| 04:03
| This way, we make sure the loop stops at 70.

|-
| 04:07
| To get the multiples, we shall increment the loop variable by 7.

|-
| 04:12
| So, change ''' n=n - 1''' to '''n=n + 7'''

|-
| 04:18
| This way first 7 is printed and then n becomes 14, 14 is printed and so on untill 70. Save and run

|-
| 04:33
| | As we can see, the first 10 multiples of 7 are printed.

|-
| 04:43
| We can also use a while loop to get the sum of digits of a number.

|-
| 04:47
| Let us see how to do so.

|-
| 04:49
| First clear the main method.

|-
| 04:54
| int '''n''' ''equal to'' '''13876'''. This is the number

|-
| 05:02
| Then '''int dSum '''''equal to'' '''0'''The variable dsum with symbolic for digit sum will contain the sum of digits

|-
| 05:18
| Type while, n greater than 0 open close parenthesis

|-
| 05:27
| The reason for using this condition will be evident in a while.

|-
| 05:32
| To get the sum of digits, we must first get the digits.
|-
| 05:36
| To do that we use modulo operator.

|-
| 05:40
| Type '''dSum = dSum + (n % 10)''' So we get the unit digit and add it to dsum

|-
| 05:5
|After that we remove the digit by dividing by 10. n = n / 10

|-
| 06:08
| So when the loop is run for the first time, '''dSum '''will be 6 and n will be 1387.

|-
| 06:15
| And when the loop is run for the the second time, '''dSum''' will be sum of 7 and 6 which is 13, and '''n''' will become 138.

|-
| 06:22
| So on, as the loop progresses, the digits will be removed from '''n''' and finally

|-
| 06:28
| '''n''' become zero.After that the condition n greater than 0 will be false and the loop will stop

|-
| 06:36
| So let us now add a print statement
|-
| 06:42
| '''System.out.println(dSum)'''

|-
| 06:51
| Let us see the code and action. Save and run
|-
| 06:59
| As we can see the sum of digit which is 25 has been printed

|-
| 07:06
| This way, a while loop, which is one of the most fundamental constructs in programming, can be used.

|-
| 07:16
| This brings us to the end of the tutorial.

|-
| 07:20
| In this tutorial we have learnt

* About while loop
* how to use it

|-
|07:26
| As an assignment for this tutorial solve the following problem.

|-
| 07:29
| Given a number, compute its reverse by using a while loop. Example: 19435 => 53491

|-
|07:37
|To know more about the '''Spoken Tutorial''' project, watch the video available at the following link, that summarizes the Spoken Tutorial project

|-
| 07:45
| If you do not have good bandwidth, you can download and watch it.

|-
| 07:50
| The Spoken Tutorial Project Team, Conducts workshops using spoken tutorials, Gives certificates for those who pass an online test

|-
| 07:57
| For more details, please write to '''contact AT spoken HYPHEN tutorial DOT org.'''

|-
| 08:03
| '''Spoken Tutorial '''Project is a part of the '''Talk to a Teacher''' project.
|-
| 08:07
| It is supported by the '''National Mission on Education through ICT, MHRD, Government of India.
|-
| 08:12
| '''More information on this Mission is available at the following link

|-
| 08:17
| This tutorial has been contributed by '''TalentSprint'''. Thanks for joining.

|}

@@ Line 32: / Line 32: @@
 |-
 |  00:26
-| જો નહિં, તો સંબંધિત ટ્યુટોરિયલ્સ માટે અમારી વેબસાઇટ  [http://spoken-tutorial.org/] જુઓ.
+| જો નહિં, તો સંબંધિત ટ્યુટોરિયલ્સ માટે અમારી વેબસાઇટ  http://spoken-tutorial.org/ જુઓ.
 |-

@@ Line 1: / Line 1: @@
 {| border=1
-|| ''Time'''
+|| '''Time'''
 || '''Narration'''

@@ Line 7: / Line 7: @@
 |-
 | 00:02
-| Welcome to the spoken tutorial on''' While Loop '''in java'''.'''
+| જાવામાં ''' While Loop ''' પરના સ્પોકન ટ્યુટોરીયલમાં તમારું સ્વાગત છે.
 |-
 |  00:06
-|  In this tutorial, you will learn  '''About the while loop.'''
+| આ ટ્યુટોરીયલ માં, તમે '''while loop''' વિષે,
-'''How To use it.'''
+અને તે કેવી રીતે વાપરવું તે વિષે શીખશો.
 |-
 |  00:12
-|  For this tutorial we are using
+| આ ટ્યુટોરીયલ માટે આપણે
 '''Ubuntu 11.10''',
-'''JDK 1.6''' and
+'''JDK 1.6''' અને
-'''Eclipse 3.7'''
+'''Eclipse 3.7''' નો ઉપયોગ કરી રહ્યા છીએ.
 |-
 |  00:21
-|   To follow this tutorial, you must have knowledge of '''relational operators in Java'''
+|  આ ટ્યુટોરીયલ અનુસરવા માટે, તમને જાવામાં રીલેશનલ ઓપરેટરો વિષે જ્ઞાન હોવું જરૂરી છે
-−
-−
 |-
 |  00:26
-| If not, for relevant tutorials please visit our website as shown. [http://spoken-tutorial.org/ http][http://spoken-tutorial.org/ ://][http://spoken-tutorial.org/ spoken][http://spoken-tutorial.org/ -][http://spoken-tutorial.org/ tutorial][http://spoken-tutorial.org/ .][http://spoken-tutorial.org/ org]
+| જો નહિં, તો સંબંધિત ટ્યુટોરિયલ્સ માટે અમારી વેબસાઇટ  [http://spoken-tutorial.org/] જુઓ.
 |-
 |  00:36
-| Here is the structure of a while loop.
+| અહીં while લૂપનું સ્ટ્રક્ચર છે.
 |-
 |  00:39
-| It has two parts.
+|તેના બે ભાગો છે.
 |-
 |  00:41
-| One is the '''loop running condition''' and the  second is the '''loop variable.'''
+| પ્રથમ '''લુપ રનીંગ કન્ડીશન''' છે અને બીજું '''લુપ વેરિયેબલ''' છે.
-−
 |-
 |   00:48
-|  Let us now  look at an example. Switch to Eclipse
+|  ચાલો હવે ઉદાહરણ જોઈએ. Eclipse પર જાઓ.
 |-
 |   00:55
 |  Here We have the eclipse IDE and  the skeleton   required  for rest of the code