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To remove all duplicates from a string in python, we need to first split the string by spaces so that we have each word in an array. Then there are multiple ways to remove duplicates.We can remove duplicates by first converting all words to lowercase, then sorting them and finally picking only the unique ones. For example, Examplesent = "Hi my name is John Doe John Doe is my name" # Seperate out each word words = sent.split(" ") # Convert all words to lowercase words = map(lambda x:x.lower(), words) # Sort the words in order words.sort() ... Read More
We can store a value in a user-defined variable in a statement and then refer to it afterward in other statements. Followings are the ways to store a value in user-defined variable −With SET statementwe can store a user-defined variable by issuing a SET statement as follows −SyntaxSET @var_name = expr[, @var_name = expr]…In this @var_name is the variable name which consists of alphanumeric characters from current character set. We can use either = or := assignment operator with SET statement.For example following queries can store the user variables with SET statement −mysql> SET @value = 500; Query OK, 0 ... Read More
Actually, the default value of the fifth argument i.e. number of bits is 64, hence if we will not specify any value on fifth argument them MySQL will check the bits up to 64 bits and produce the result. It can be understood from the following example −Examplemysql> SELECT EXPORT_SET(5, 'Y', 'N', ' ')\G *************************** 1. row *************************** EXPORT_SET(5, 'Y', 'N', ' '): Y N Y N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N N ... Read More
We want to replace a character a1 with a character a2 and a2 with a1. For example, For the input string, "puporials toinp"and characters p and t, we want the end string to look like −"tutorials point"For this we can use map function and lambdas to make the replacement. The map(lambda, input) function iterates over each item passed to it(in form of iterable input) and apply the lambda expression to it. So we can use it as follows −Example Live Demodef replaceUsingMapAndLambda(sent, a1, a2): # We create a lambda that only works if we input a1 or a2 and swaps them. ... Read More
For this purpose let us use a dictionary object having digit as key and its word representation as value −dct={'0':'zero', '1':'one', '2':'two', '3':'three', '4':'four', '5':'five', '6':'six', '7':'seven', '8':'eight', '9':'nine'Initializa a new string object newstr=''Using a for loop traverse each character ch from input string at check if it is a digit with the help of isdigit() function. If it is digit, use it as key and find corresponding value from dictionary and append it to newstr. If not append the character ch itself to newstr. Complete code is as follows:string='I have 3 Networking books, 0 Database books, and 8 Programming ... Read More
On the basis of the working of both the functions, we can say that both are the complement of each other. Actually, as we know that FIELD() function, on providing a string as an argument, returns the index number of the string from string list and ELT() function, on providing index number as an argument, returns the string from string list. In the following example, we have applied both the functions on the same string, it would demonstrate the concept −Examplemysql> SELECT ELT(4, 'Ram', 'is', 'good', 'boy')As Result; +--------+ | Result | +--------+ | boy | +--------+ ... Read More
As we know that the default value of the fifth argument i.e. number of bits is 64, hence if we will not specify any value on fifth argument them MySQL will check the bits up to 64 bits and produce the result. Whereas, on skipping the fourth argument i.e. separator, MySQL will use a comma (, ) as a separator while displaying the output.Examplemysql> SELECT EXPORT_SET(8, 'Y', 'N')\G *************************** 1. row *************************** EXPORT_SET(8, 'Y', 'N'): N, N, N, Y, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, N, ... Read More
The scaleY(y) method is used to scale transform the element using y-axis.Let us see the syntax −scaleY(y)Here, y is a number representing the scaling factor to apply on the ordinate of each point of the element.Let us see an example −div { width: 60px; height: 60px; background-color: yellow; } .scaled { transform: scaleY(0.5); background-color: black; }
As we know the 1st argument of ELT() function must be an integer value but when we provide index number which is not an integer the MySQL ELT() function returns NULL with a warning.Examplemysql> select ELT('one','Ram,is,good,boy')As Result; +--------+ | Result | +--------+ | NULL | +--------+ 1 row in set, 1 warning (0.00 sec) mysql> Show Warnings; +---------+------+------------------------------------------+ | Level | Code | Message | +---------+------+------------------------------------------+ | Warning | 1292 | Truncated incorrect INTEGER value: 'one' | +---------+------+------------------------------------------+ 1 row in set (0.00 sec)
The scaleX(x) method is used to scale transform the element using x-axis.Let us see the syntax −scaleX(x)Here, x is a number representing the scaling factor to apply on the abscissa of each point of the element.Let us see an example −div { width: 60px; height: 60px; background-color: yellow; } .scaled { transform: scaleX(0.5); background-color: black; }