Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
In this article, we will learn about the solution to the problem statement given below −Problem statementThe standard form of a parabola equation is y=ax^2+bx+c. Input the values of a, b and c, our task is to find the coordinates of the vertex, focus and the equation of the directrix.The vertex of a parabola is the coordinate from which it takes the sharpest turn whereas y=a is the straight-line used to generate the curve.A directrix a fixed line used in describing a curve or surface.Now let’s see the implementation −Example Live Demodef findparabola(a, b, c): print ("Vertex: (" , (-b ... Read More
Let us first create a table −mysql> create table DemoTable ( FirstName varchar(100), CountryName varchar(100) ); Query OK, 0 rows affected (0.56 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values('Adam', 'US'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable values('David', 'AUS'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable values('Chris', 'UK'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values('John', 'US'); Query OK, 1 row affected (0.21 sec) mysql> insert into DemoTable values('Carol', 'AUS'); Query OK, 1 row affected (0.14 sec)Display all records ... Read More
In this article, we will learn about the solution to the problem statement given below −Problem statementInput diameter and height, find the perimeter of a cylinder.Perimeter is nothing but the side view of a cylinder i.e. a rectangle.Therefore Perimeter= 2 * ( h + d )here d is the diameter of the cylinderh is the height of the cylinderNow let’s see the implementationExample Live Demo# Function to calculate the perimeter of a cylinder def perimeter( diameter, height ) : return 2 * ( diameter + height ) # main diameter = 5 ; height = 10 ; print ("Perimeter = ... Read More
Here’s the syntax to check whether the table already exists using the CREATE TABLE IF NOT EXISTS −create table if not exists yourTableName ( yourColumnName1 dataType, . . . . N ); insert into yourTableName values(yourValue1, .......N);Let us first create a table −mysql> create table if not exists DemoTable ( StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, StudentSubject varchar(100) ); Query OK, 0 rows affected (0.60 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(StudentSubject) values('Java'); Query OK, 1 row affected (0.24 sec) mysql> insert into DemoTable(StudentSubject) values('MySQL'); ... Read More
For this, you can use FIND_IN_SET(). Let us first create a table −mysql> create table DemoTable ( Id int NOT NULL AUTO_INCREMENT PRIMARY KEY, Value varchar(100) ); Query OK, 0 rows affected (2.49 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(Value) values('100;200;300'); Query OK, 1 row affected (0.42 sec) mysql> insert into DemoTable(Value) values('1;300;400'); Query OK, 1 row affected (0.58 sec) mysql> insert into DemoTable(Value) values('6;7;8;9;10'); Query OK, 1 row affected (0.29 sec) mysql> insert into DemoTable(Value) values('1;2;3;4;5'); Query OK, 1 row affected (9.36 sec) mysql> insert into DemoTable(Value) values('3;8;9;10'); Query OK, 1 ... Read More
Let us first create a table &mnus;mysql> create table DemoTable ( `timestamp` timestamp ); Query OK, 0 rows affected (1.12 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(now()); Query OK, 1 row affected (0.27 sec) mysql> insert into DemoTable values('00:00:00'); Query OK, 1 row affected (0.73 sec) mysql> insert into DemoTable values('2018-01-10 12:34:45'); Query OK, 1 row affected (0.80 sec) mysql> insert into DemoTable values('2019-12-31 10:50:45'); Query OK, 1 row affected (0.84 sec)Display all records from the table using select statement −mysql> select *from DemoTable;This will produce the following output −+---------------------+ | timestamp ... Read More
In this article, we will learn about the solution to the problem statement given below:Problem statementWe are given an integer input n and we need to sum of all n terms where the n-th term in a series as expressed below −Tn = n2 - (n-1)2We have direct formulas for computing the sum which includes the squared muktiolicaion of n which involves more time complexity . To reduce that we usr modular multiplication approach hereNow let's see the implementation −Example Live Demo# Python program to find sum of given # series. mod = 1000000007 def findSum(n): return ((n % mod) ... Read More
For this, you can use replace() along with group_concat(). Here, for empty fields, we are displaying a comma as a separator. Let us first create a table −mysql> create table DemoTable ( Id int, Number varchar(100) ); Query OK, 0 rows affected (2.03 sec)Insert some records in the table using insert command −mysql> insert into DemoTable values(10, '456'); Query OK, 1 row affected (0.19 sec) mysql> insert into DemoTable values(11, '345'); Query OK, 1 row affected (0.28 sec) mysql> insert into DemoTable values(10, ''); Query OK, 1 row affected (0.63 sec) mysql> insert into DemoTable values(10, '278'); Query ... Read More
In this article, we will learn about the solution to the problem statement given below −Problem statementGiven a number input n, the task is to Find the sum of odd factors of a number.Here we first need to eliminate all the even factors.To remove all even factors, we repeatedly divide n till it is divisible by 2. After this step, we only get the odd factors of the number.Below is the implementation −Example Live Demoimport math def sumofoddFactors( n ): #prime factors res = 1 # ignore even factors while n % 2 == 0: ... Read More
For this, you can use ORDER BY DESC with LIMIT. Let us first create a table −mysql> create table DemoTable ( UserId int NOT NULL AUTO_INCREMENT PRIMARY KEY, UserName varchar(100) ); Query OK, 0 rows affected (0.59 sec)Insert some records in the table using insert command −mysql> insert into DemoTable(UserName) values('Chris'); Query OK, 1 row affected (0.16 sec) mysql> insert into DemoTable(UserName) values('Robert'); Query OK, 1 row affected (0.13 sec) mysql> insert into DemoTable(UserName) values('Bob'); Query OK, 1 row affected (0.12 sec) mysql> insert into DemoTable(UserName) values('David'); Query OK, 1 row affected (0.10 sec) mysql> insert into DemoTable(UserName) ... Read More