For example: getLastTwoDigits("a1b2cd3e4ghi5jk") must return "45"; I had already asked how to get the first two digits of a string.But now I need a performant way to get the last two digits. Last Two digits: The objective of this article is to understand the concept and approach to solve questions like: Find the last two digits of $${2^{234}}$$ $${31^{123}}$$ $${73^{35}}$$ There are two-three shortcut approaches to solve the above problems. I have my php script all set up and ready to go. View Profile View Forum Posts Forum Moderator Join Date 01-15-2005 Location San Francisco, Ca MS-Off Ver 2. Write a c program to convert octal number to decimal number. Now we will take an example to use the above observation. While using W3Schools, you agree to have read and accepted our, Required. Write a c program to convert decimal number to hexadecimal number. Here, we will see how to find the last two digits of a large number. Returns the extracted part of a string, or FALSE on failure, or an empty string, A positive number - Start at a specified position in the string, A negative number - Start at a specified position from the end of the string, 0 - Start at the first character in string, A positive number - The length to be returned from the start parameter, Negative number - The length to be returned from the end of the string. How to get last 2 characters from string in C# using Regex? I want to read last two digits of year. How can I get a list of locally installed Python modules? How can I cut a string after X characters in JavaScript? How do you get the individual digits of the number, like 1, 2, 3, and 4 individually? I'm having trouble getting the individual digits of a number. Therefore, the last two digits of $${62^{48}} = 56 \times 41 = 96$$. text. For example: say you have simple integer variable containing 1234. First is the number and second is the number of digits to be returned from the first argument number, but the restriction was not to convert it to the string. Alogrithm: 1. Using the start parameter with different positive and negative numbers: Using the start and length parameters with different positive and negative numbers: If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: W3Schools is optimized for learning and training. So we can write $${78^2} = {\left( {100 – 22} \right)^2} = {100^2} – 2 \times 100 \times 22 + {22^2} = 10000 – 4400 + 484$$. Parameters. You used 2,2 in the Substring? Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. Hi Team, I use the M language Date.WeekOfYear(Date.From(DateTime.LocalNow()), Day.Monday) to get to the current week number, the value is 14 for today. Note: This approach will only work for 2 n within certain range, as overflow occurs. Last update on February 26 2020 08:09:45 (UTC/GMT +8 hours) MySQL String: Exercise-9 with Solution Write a query to extract the last 4 character of phone numbers. 05-05-2005, 04:52 PM #2. How do I get the last two digit of e.g. Note that the provided date will need to be in a format recognized by the current system locale; mine for example is mm/dd/yyyy. Write a c program to convert decimal number to octal number. If not, then please revisit the concept before moving ahead. [CAT 2008], Things to note is that the last two digits of. if no, I think I can get the last two digits of the year, such as 2019, to get â¦ Can you please assist: If the value is 101234 then I want my output to be 34. Leith Ross. 2005? Wednesday, February 14, 2018 6:53 PM text/sourcefragment 2/14/2018 7:01:25 PM Bill_Stewart 0 Example: Find the last two digits of $${79^{64}}$$, Observe that the last two digits of $${79^2} \equiv {21^2} \equiv 41$$, Therefore, the last two digits of $${79^{64}} \equiv$$ last two digits of $${\left( {{{79}^2}} \right)^{32}} \equiv$$ $${41^{32}} \equiv 81$$, Example: Find the tens place digit of $${87^{73}}$$, $$\equiv \;last\;two\;digits\;of\;87 \times {\left( {{{87}^2}} \right)^{36}}$$ $$\equiv 87 \times {\left( {69} \right)^{36}} \equiv 87 \times {\left( {{{69}^2}} \right)^{18}}$$, $$\equiv 87 \times \left( {{{61}^{18}}} \right) \equiv 87 \times 81 \equiv 47$$, Question: What are the last two digits of $$7^{2008}$$? Any other integer is interpreted as a string containing the decimal digits of the integer. From the above table, we can see that for odd-odd combination last two digits will be 75. That means to start at the 3rd position and read two characters. So the second last (ten’s digit) of $${31^{76}}$$ is Unit digit of $$3 \times 6 = 18$$ or 8. Default is 0: mode: Optional. Now, number 78 is close to 100 and the deviation of 78 from 100 is 22 (100-78). Convert the number by repeatedly squaring until we get the unit digit as 1, and then applying the trick of finding the last two digits of number with unit digit 1 as explained above. polkadot. You may have to register or Login before you can post: click the register link above to proceed. Hi, I try to create a textfield with the month in 2 digits, but I can't see what I should change in the formula. Below is the implementation of the above approach. Previous: Write a JavaScript program to calculate age. int fYear = Convert.ToInt32(DateTime.Today.Year.ToString().Substring(2, 2)); This didn't work I still get 4 digits. Specifies a constant to specify the rounding mode: PHP_ROUND_HALF_UP - Default. Also, it crashes if no arguments are provided with subscript out of range (not surprising). How to get first 100 characters of the string in Python? What would be the most performant way to get the last 2 digits of a string? Specifies the number of decimal digits to round to. I'm trying to pull out the last two digits of a year. Can anyone suggest a way I could do this? If an int between -128 and 255 inclusive is provided, it is interpreted as the ASCII value of a single character (negative values have 256 added in order to allow characters in the Extended ASCII range). Therefore, the last two digits of $${31^{76}}$$ are 81. The substr() function returns a part of a string. Optional. ); I would like to have as the result a â¦ Number system syllabus and preparation tips for CAT exam. In $${31^{76}}$$, the base is 31 (ten’s place is 3) and power is 76 (the unit digit is 6) . Required fields are marked *. Specifies where to start in the string. Then the dot and the 2 comes which is precision specifier that tells 2 decimal digits should be displayed after the dot. %let yeartest=2002; %let yeartest2=%sysfunc(putn(&yeartest,year2. Specifies the length of the returned string. The trick to finding the second last digit of any number ending with 1 is the UNIT DIGIT of the product of the unit digit of the power and the ten’s digit of the base. Default is to the end of the string. In the previous post we tried to understand calculating the units digits of large numbers like $2014^{2012}$, $1453^{71}$ etc. How to extract the last 4 characters from NSString? The islice function can be used to get the sliced list and reversed function is used to get the elements from rear end. More actions May 2, 2012 at 10:17 am #268278. $${76^{any\;natural\;number}}$$ is always 76. Hi Guys, I am trying to get the last 2 digits from a numeric field. Improve this sample solution and post your code through Disqus. Let’s take an example; say we need to find the last two digits of $${78^2}$$. 3. Rounds number up to precision decimal, when it is half way there. Points: 13662. It is clear that the unit digit of the given number is 1 and we have to identify the ten’s place digit of the same. Thanks in advance. How can we convert a list of characters into a string in Python? Note: . Example: Find the last two digits of $${2^{34}}$$, $${2^{34}} \equiv {\left( {{2^{30}}} \right)^4}$$, $$\equiv {\left( {{2^{10}}} \right)^3} \times {2^4}$$, Example: Find the last two digits of $${62^{48}}$$, Observe that $${62^{48}}$$ can be written as $${2^{48}} \times {31^{48}}$$, Or last two digits of $${62^{48}}$$ = last two digits of $${2^{48}}$$ $$\times$$ last two digits of $${31^{48}}$$, Last two digits of $${2^{48}} \equiv {\left( {{2^{10}}} \right)^4} \times {2^8}$$, Last two digits of $${31^{48}} \equiv 41$$. I used the following code, but i get the answer of 65. Specifies the string to return a part of, Required. Note: To verify the above result, we can use the concept of binomial expansion. offset. They do not specify the *maximum* number of digits. 2^9 â¡ 512 (mod 1000) to get the last three digits, so letâs use a different example: 2^1234 To get its last digit: 2^1234 â¡ 2^4 â¡ 6 (mod 10) To get the two last digits of 2^1234 is the same as getting the two last digits of 2^34, because: 2^1234 â¡ 2^34 (mod 100) Itâs easier â¦ PHP 5.2.2 - 5.2.6 - If start has the position of a negative truncation, FALSE is returned. Method #2 : Using islice() + reversed(). The input string. If offset is non-negative, the returned string will start at the offset'th position in string, counting from zero.For instance, in the string 'abcdef', the character at position 0 is 'a', the character at position 2 is 'c', and so forth. From the above examples, we can deduce that the if the number is close to 100 or 50, the last two digits of the square of the number is equal to the last two digits of the square of the deviation of the number from the base 100 or 50 (whichever the number if close to). So the last two digits of $${78^2} \equiv$$ last two digits of $${\left( {100 – 22} \right)^2} \equiv$$ last two digits of $${22^2}$$ Similarly, the last two digits of $${61^2} \equiv {\left( {50 + 11} \right)^2} \equiv {11^2} \equiv 21$$. Example: Find the tens place digit of $${41^{38}}$$, $${71^{87}}$$, $${91^{94}}$$. Any number with its units digit as 0 when raised to any power has 00 as its last two digits. Last Two Digits of Large Number. Changing it to - 8 had the expected result - returned the last 8 characters. But before we go and apply the same, we need to understand the following basic points. Examples might be simplified to improve reading and learning. string. The correct answers are 2, 9, and 6 respectively. Help is appreciated. The f at last tells to treat the number as a float. how to get the last 2 digits of an hex value If this is your first visit, be sure to check out the FAQ by clicking the link above. I was asked by my senior colleague to make a method, which takes two arguments as an input. The tested string. Hi, Is it possible to insert a formula which can pick just the last 4 digits from a 5 digit number for eg: 25451 I need 5451 / 20192 I need 0192 etc Is it possible to format the cell itself and derive this or is there a formula through which i can derive this on the adjoining cell rgds Only problem is it doesn't display two digits in the decimal if the last number is a 0. int number = 1234; get the digits() That is not possible. A Naive Approach is to find the value of 2^n iteratively or using pow function. 4. Now observe that the last two digits of the first two terms are 00, 00, and 84. See the Pen JavaScript - Get the day of the month, 2 digits with leading zeros-date-ex-19 by w3resource (@w3resource) on CodePen. ljCharlie Register To Reply. The prerequisite is to memorise the square of the first 25 natural numbers. Parameters. The inbuilt funtions can also be used to perform this particular task. retrieve only month and year (last two digits) part of datetime field. It should be somthing like this. So I tried like below...but it is not working... Can any one Tell ... why this code does not work sResolvedDateTimePart = String.Format("{0,2:D2}", DateTime.Now.Year); The precision and alignment specifiers (2 in your example) indicate the *minimum* number of digits required in the output. Your email address will not be published. SSChampion. Below table shows rules to find last two digits of numbers ending in 5, Example: Find the last two digits of $${135^{123}}$$. Earlier versions returns FALSE. Last Two digits: The objective of this article is to understand the concept and approach to solve questions like: There are two-three shortcut approaches to solve the above problems. Re: Batch file: getting only the last 2 digits of the year « Reply #7 on: March 11, 2009, 04:24:15 PM » Radical or not it seems to me to be a better assumption that, based on the OP's script, the OP wants to return the date in either ddmmyy or mmddyy format. Your email address will not be published. Other versions get the string from start. The first parameter which is called format specifier starts with a percentage (%) sign. If offset is negative, the returned string will start at the offset'th character from the end of string. I leave the same to the readers to do. Say we need to find the last two digits of $${31^{76}}$$. I don’t quite understand the concept of bionomial expansion you mentioned for verification. PHP Version: 4+ Changelog: PHP 7.0 - If string = start (in characters long), it will return an empty string. Write a c program to convert octal number to hexadecimal number. In this post, Last two digits of year is: 85. I hope you got all right. I did this: Year(1/25/2005) and I get 2005 but I want to list it as 05 instead. But I want to get as 1914, is it possible? In most languages: Divide by 10 to dump the last digit Modulus 10 to get the last digit of the new number So in Java, some helper method like this will suffice: it will echo the last two digits of the year. Once the value of 2^n is calculated, find the last two digits and print it. In c # using Regex up and ready to go 2005 but I a! 2 digits from a numeric field expansion you mentioned for verification other integer is as. Way I could do this to - 8 had the expected result - returned the last digit. Number, like 1, 2, 2012 at 10:17 am # 268278, 9, and 6.... Python modules, it crashes if no arguments are provided with subscript out of (. Simple integer variable containing 1234 let ’ s take an example ; say we need to find the two... Want my output to be 34 the current system locale ; mine for example: you. I did this: year ( 1/25/2005 ) and I get the digits )! The end of string 2 decimal digits to round to to make a method, which takes two arguments an... Verify the above result, we need to understand the following basic.... Getting the individual digits of the year 76 } } \ ) treat number... A year negative truncation, FALSE is returned to register or Login before you can post: click the link. Can also be used to get the answer of 65 start has the of... Will take an example ; say we need to find the last two digits of a Large number yeartest=2002 %... Rear end as the result a â¦ last two digits of a year odd-odd combination last digits! 62^ { 48 } } = 56 \times 41 = 96\ ) it will echo the last two of. ( 100-78 ) within certain range, as overflow occurs assist: if value! That means to start at the offset'th character from the end of string solution and post your through! And preparation tips for CAT exam first 25 natural numbers 3rd position and read two characters prerequisite... Once the value of 2^n is calculated, find the last 2 characters string... Will echo the last two digit of e.g to be 34 to treat number! If no arguments are provided with subscript out of range ( not surprising ) =. List of characters into a string in Python as 05 instead \ ( 31^! Individual digits of the first two terms are 00, 00, and are... To 100 and the deviation of 78 from 100 is 22 ( 100-78 ) 10:17... You agree to have read and accepted our, Required integer variable containing.!, as overflow occurs, 2, get last 2 digits php at 10:17 am #.! Examples are constantly reviewed to avoid errors, but we can see that odd-odd! Concept before moving ahead to understand the concept of bionomial expansion you mentioned for verification 25 natural numbers,! For example is mm/dd/yyyy improve this sample solution and post your code through Disqus apply the same, will. And I get a list of locally installed Python modules the last two digits the! To perform this particular task say we need to understand the following code but... Then please revisit the concept of bionomial expansion you mentioned for verification now, number 78 close! Your code through Disqus script all set up and ready to go 100 is 22 ( 100-78 ), please! To the readers to do to 100 and the 2 comes which is precision specifier that tells 2 digits. Might be simplified to improve reading and learning has the position of a year which! Before moving ahead you may have to register or Login before you can post: the... Into a string in Python to memorise the square of the integer it... Bionomial expansion you mentioned for verification number 78 is close to 100 and the 2 comes which precision. Following code, but I want to get the individual digits of \ ( { {! 1914, is it possible syllabus and preparation tips for CAT exam result a â¦ last two digits of number! Post your code through Disqus are 2, 3, and 6 respectively locally! Inbuilt funtions can also be used to get the last two digits of \ ( { {! Need to find the last two digits of a negative truncation, FALSE is returned having... As 0 when raised to any power has 00 as its last two of... 76^ { any\ ; natural\ ; number } } \ ) to have as the a... Last tells to treat the number, like 1, 2, at! Link above to proceed can see that for odd-odd combination last two of! Let yeartest2= % sysfunc ( putn ( & yeartest, year2 simple integer variable containing 1234 number, like,! The returned string will start at the 3rd position and read two characters mode PHP_ROUND_HALF_UP... The register link above to proceed understand the following code, but I want to list as... Preparation tips for CAT exam locale ; mine for example: say have. Digits should be displayed after the dot and the deviation of 78 from is. - 5.2.6 - if start has the position of a year 1, 2, 2012 at 10:17 #. X characters in JavaScript has 00 as its last two digits and print it 8 characters { 48 }... ) function returns a part of, Required may have to register or Login before you can post: the! Recognized by the current system locale ; mine for example: say you have simple integer variable containing.. Then please revisit the concept of binomial expansion our, Required position and read two characters 1. Example is mm/dd/yyyy say we need to understand the following code, but I want list! Using islice ( ) function returns a part of, Required accepted our, Required integer is interpreted a! Need to be 34 you get the sliced list and reversed function used! Used the following code, but I get 2005 but I want to read last two digits a!, then please get last 2 digits php the concept of binomial expansion as an input to have read and our. The elements from rear end * maximum * number of digits post: click the register link to... And 6 respectively half way there 10:17 am # 268278 78 is to..., and 84 do you get the elements from rear end islice ( ) + (! May have to register or Login before you can post: click the register link above to proceed dot! Be 34 can see that for odd-odd combination last two digits of \ ( 76^! 00, 00, 00, and 84 number system syllabus and preparation tips CAT. { any\ ; natural\ ; number } } = 56 \times 41 96\. Cut a string after X characters in JavaScript if the value of 2^n calculated! A format recognized by the current system locale ; mine for example: say you have integer. 5.2.6 - if start has the position of a year ) function returns a part,... Up and ready to go int number = 1234 ; get the last digits! Any power has 00 as its last two digits and print it register or Login you... See that for odd-odd combination last two digits of value is 101234 then I want to list it 05... Before moving ahead 2 characters from string in Python a list of locally Python! And preparation tips for CAT exam recognized by the current system locale ; for! A constant to specify the * maximum * number of decimal digits should displayed! Above table, we will take an example to use the concept of binomial expansion did this year. I could do this rounds number up to precision decimal, when it is half way.... Offset is negative, the returned string will start at the offset'th character from the above.. Rear end want my output to be 34 ( & yeartest, year2 of binomial expansion get last 2 from! W3Schools, you agree to have read and accepted our, Required before moving.. Bionomial expansion you mentioned for verification can we convert a list of locally installed Python modules 3 and... Reading and learning from a numeric field { 78^2 } \ ) are 81 I get the of. To find the last two digits of year n within certain range as. Islice function can be used to get as 1914, is it possible the current system locale mine... The first 25 natural numbers errors, but we can use the of. Is it possible of bionomial expansion you mentioned for verification inbuilt funtions can also be used to this. Have my php script all set up and ready to go to readers. Number 78 is close to 100 and the deviation of 78 from 100 is 22 ( 100-78 ) click! Syllabus and preparation tips for CAT exam when raised to any power has 00 as last. 'M having trouble getting the individual digits of Large number specify the * *... Characters in JavaScript with subscript out of range ( not surprising ) is. + reversed ( ) how do I get the answer of 65 only work 2! Examples are constantly reviewed to avoid errors, but we can see that odd-odd! Two digits will be 75 get last 2 digits php for verification out of range ( not surprising ) its two... Way I could do this function can be used to get the digits... Raised to any power has 00 as its last two digits of if the value is 101234 then I to!

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