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Articles by Chandu yadav
Page 15 of 81
Modular multiplicative inverse in java
The java.math.BigInteger.modInverse(BigInteger m) returns a BigInteger whose value is (this-1 mod m). Using this method you can calculate Modular multiplicative inverse for a given number.ProgramLive Demoimport java.math.*; public class BigIntegerDemo { public static void main(String[] args) { // create 3 BigInteger objects BigInteger bi1, bi2, bi3; // create a BigInteger exponent BigInteger exponent = new BigInteger("2"); bi1 = new BigInteger("7"); bi2 = new BigInteger("20"); // perform modPow operation on bi1 using bi2 and exp bi3 = bi1.modPow(exponent, bi2); String str = bi1 + "^" +exponent+ " mod " + bi2 + " is " +bi3; // print bi3 value System.out.println( str ); } }Output7^2 mod 20 is 9
Read MoreSmith Numbers in java
A composite number whose sum of digits equal to the sum of the digits of its prime factors.Ex: 58 = 2 x 29 (5 + 8 = 12) (2+ 2 + 9 = 12)Programpublic class SmithNumbers { public static boolean isPrime(int number) { int loop; int prime = 1; for(loop = 2; loop < number; loop++) { if((number % loop) == 0) { prime = 0; } } if (prime ...
Read MoreCheck if a large number is divisible by 11 or not in java
A number is divisible by 11 if the difference between the sum of its alternative digits is divisible by 11.i.e. if (sum of odd digits) – ( sum of even digits) is 0 or divisible by 11 then the given number is divisible by 11.Programimport java.util.Scanner; public class DivisibleBy11 { public static void main(String args[]) { Scanner sc = new Scanner(System.in); System.out.println("Enter a number :"); String num = sc.nextLine(); int digitSumEve = 0; int digitSumOdd = 0; for(int i = 0; i
Read MoreGCD and LCM of two numbers in Java
Following is an example which computes find LCM and GCD of two given numbers.Programimport java.util.Scanner; public class LCM_GCD { public static void lcm(int a, int b){ int max, step, lcm = 0; if(a > b){ max = step = a; } else{ max = step = b; } while(a!= 0) { if(max%a == 0 && max%b == 0) { lcm = max; break; } max += step; } System.out.println("LCM of given numbers is :: "+lcm); } public static void gcd(int a,int b){ int i, hcf = 0; for(i = 1; i
Read MorePerform Animation on border-right-width property
To implement animation on border-right-width property with CSS, you can try to run the following codeExampleLive Demo div { width: 500px; height: 300px; background: yellow; border: 15px solid yellow; background-image: url('https://www.tutorialspoint.com/latest/cuda.png'); animation: myanim 3s infinite; background-position: bottom left; background-size: 50px; } @keyframes myanim { 30% { background-color: maroon; border-right-color: red; border-right-width: 25px; } } Performing Animation for border right width
Read MoreAnimated background with CSS
Use the @keyframes to animate. To implement animation on background with CSS, you can try to run the following codeExampleLive Demo div { width: 400px; height: 300px; animation: myanim 3s infinite; } @keyframes myanim { 30% { background: green bottom right/50px 50px; } }
Read MoreMySQL Mass Update with CASE WHEN/ THEN/ ELSE?
The syntax for mass update with CASE WHEN/ THEN/ ELSE is as follows −UPDATE yourTableName set yourColumnName=case when yourColumnName=Value1 then anyUpdatedValue1 when yourColumnName=Value2 then anyUpdatedValue2 when yourColumnName=Value3 then anyUpdatedValue3 when yourColumnName=Value4 then anyUpdatedValue4 else yourColumnName end;To understand the above syntax, let us first create a table. The query to create a table is as follows −mysql> create table CaseUpdateDemo -> ( -> Id int, -> Name varchar(100) -> ); Query OK, 0 rows affected (0.78 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into CaseUpdateDemo values(1, 'John'); Query OK, 1 row affected ...
Read MoreFetching rows added in last hour with MySQL?
You can use date-sub() and now() function from MySQL to fetch the rows added in last hour.SyntaxThe syntax is as follows −select *from yourTableName where yourDateTimeColumnName create table LastHourRecords -> ( -> Id int, -> Name varchar(100), -> Login datetime -> ); Query OK, 0 rows affected (0.67 sec)Insert records in the form of datetime using insert command. The query to insert record is as follows −mysql> insert into LastHourRecords values(1, 'John', ' 2018-12-19 10:00:00'); Query OK, 1 row affected (0.17 sec) mysql> insert into LastHourRecords values(2, 'Carol', '2018-12-19 10:10:00'); Query OK, 1 row affected (0.15 sec) ...
Read MoreGet the time difference and convert it to hours in MySQL?
You can achieve with the help of timestampdiff() method from MySQL. The syntax is as follows −SyntaxSELECT ABS(TIMESTAMPDIFF(HOUR, yourColumnName1, yourColumnName2)) as anyVariableName from yourTableName;To understand the above syntax, let us create a table. The query to create a table is as follows −mysql> create table DifferenceInHours -> ( -> StartDateTime datetime, -> EndDateTime datetime -> ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into DifferenceInHours values('2018-12-20 10:00:00', '2018-12-19 12:00:00'); Query OK, 1 row affected (0.11 sec) mysql> insert into DifferenceInHours ...
Read MoreSet whether the text should be overridden to support multiple languages with CSS
Use the unicode-bdi property to set whether the text should be overridden to support multiple languages with CSSExampleLive Demo p.demo1 { direction: rtl; unicode-bidi: bidi-override; } p.demo2 { direction: rtl; unicode-bidi: isolate; } The unicode-bidi Property This is demo text. This is demo text This is demo text
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