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Programming Articles
Page 81 of 2544
C program to find the area of circle and cylinder using structures.
In C programming language, we can find the area of circle, area and volume of cylinder with the help of structures.The logic used to find area of circle is as follows −s.areacircle = (float)pi*s.radius*s.radius;The logic used to find area of cylinder is as follows −s.areacylinder = (float)2*pi*s.radius*s.line + 2 * s.areacircle;The logic used to find the volume of cylinder is −s.volumecylinder = s.areacircle*s.line;AlgorithmRefer an algorithm given below to find the area of circle and cylinder along with other parameters by using structures.Step 1 − Declare structure members.Step 2 − Declare and initialize the input variables.Step 3 − Enter length and ...
Read MoreWhat is the difference between class and typeof function in R?
The class function in R helps us to understand the type of object, for example the output of class for a data frame is integer and the typeof of the same object is list because data frames are stored as list in the memory but they are represented as a data frame. Check out the below examples with multiple type of objects to understand the differences.Example1x1
Read MoreC program to store the car information using dynamic linked list.
Linked lists use dynamic memory allocation i.e. they grow and shrink accordingly. It is collection of nodes.Node has two parts which are as follows −DataLinkTypes of Linked ListsThe types of linked lists in C programming language are as follows −Single / Singly linked listsDouble / Doubly linked listsCircular single linked listCircular double linked listAlgorithmRefer an algorithm given below for storing the car information by using the dynamic linked list.Step 1 − Declare structure variables.Step 2 − Declare Function definition to display.Step 3 − Allocate dynamic memory allocation to variable.Step 4 − Use do while loop to enter the car information.Step ...
Read MoreHow to create transparent bar plot using ggplot2 in R?
To create transparent barplot using ggplot2, we can use alpha argument inside geom_bar function. For example, if we have a data frame called df that contains a categorical column say x and a numerical column say count then the bar plot with transparency can be created by using the command ggplot(df,aes(x,y))+geom_bar(alpha=0.1,stat="identity")ExampleConsider the below data frame −x
Read MoreC program to print name inside heart pattern using for loop.
ProblemWrite a program to print heart shaped pattern with the name in centre using for loop.SolutionThe user has to enter the name that should be printed in centre along with the number of rows the stars has to be print.AlgorithmRefer an algorithm given below to print the name in heart pattern by using for loop.Step 1 − Declare variables.Step 2 − Read a name at runtime that should be printed on centre.Step 3 − Read number of rows.Step 4 − Find the length of name.Step 5 − Print upper part of the heart.Step 6 − Print lower part of the ...
Read MoreHow to change the size of dots in dotplot created by using ggplot2 in R?
To change the size of dots in dotplot created by using ggplot2, we can use binwidth argument inside geom_dotplot. For example, if we have a data frame called df that contains a column x for which we want to create the dotplot then the plot with different size of dots can be created by using the command ggplot(df,aes(x))+geom_dotplot(binwidth=2).ExampleConsider the below data frame −x
Read MoreAccess front and rear element of Python tuple
When it is required to access the front and rear elements of a Python tuple, the access brackets can be used.A tuple is an immutable data type. It means, values once defined can't be changed by accessing their index elements. If we try to change the elements, it results in an error. They are important contains since they ensure read-only access.Below is a demonstration of the same −Examplemy_tuple_1 = (87, 90, 31, 85, 34, 56, 12, 5) print("The first tuple is :") print(my_tuple_1) my_result = (my_tuple_1[0], my_tuple_1[-1]) print("The front and rear elements of the tuple are : ...
Read MoreHow to find the opposite of %in% in R?
To find the opposite of %in%, we can use negation operator ! (exclamation sign). For example, if we have a data frame df that contains a column say x then to subset df by excluding some values (say 2, 3) we can use the command subset(df,!(x %in% c(2,3))).Example1Consider the below data frame −x1
Read MoreChunk Tuples to N in Python
When it is required to chunk the tuples to 'N' values, list comprehension is used.The list comprehension is a shorthand to iterate through the list and perform operations on it.Below is a demonstration of the same −Examplemy_tuple_1 = (87, 90, 31, 85, 34, 56, 12, 5) print("The first tuple is :") print(my_tuple_1) N = 2 print("The value of 'N' has been initialized") my_result = [my_tuple_1[i : i + N] for i in range(0, len(my_tuple_1), N)] print("The tuple after chunking is : ") print(my_result)OutputThe first tuple is : (87, 90, 31, 85, 34, 56, 12, 5) The value ...
Read MoreHow to create duplicate matrices and merge them together in R?
To create duplicate matrices, we can use replicate function that will repeat the original matrix and if we want to merge those matrices together then we can use rbind with do.call. For example, if we have a matrix called M then creation of it’s one duplicate and merging them together can be done using the command −do.call(rbind,replicate(2,M,simplify=FALSE))ExampleM
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