CREATING a SET of any length at one time

how to CREATING a SET of any length at one time?

[Walter Roberson]

What properties does the set have to have? Is it a set of positive integers? Is it a set of double precision numbers? Is it a dense set or a sparse set? Are you willing to impose a maximum set size (because if not then we have to start working on ways to represent arbitrary precision numbers on disk.)

Answer 1

[Abhishek Chakram]

Hi Shahad Alsubhi,

It is my understanding that you want to create set of any length at one time. Here are some ways to achieve the same:

• Using direct assignment: You can create set of any length of your requirement just by assigning them to a variable. Here is an example for the same:

mySet = [1,2,24,2,24,23,4,235,45,4,3,43,4,34,34,3,43,43,2];

• Using the “randperm” function: The “randperm” function generates a random permutation of integers. You can use it to create a set of unique integers within a specfied range. Here is an example for the same:

n = 10; % Length of the set
mySet = randperm(n);

• Using the “randi” function: The “randi” function generates random integers from a specified range. You can use it to create a set of random integers of any length. Here is an example for the same:

n = 20; % Length of the set
range = [1, 100]; % Range of integers
mySet = randi(range, 1, n);

• Using the colon operator: The colon operator (:) allows you to create a set of consecutive numbers. You can specify the starting value, step size, and ending value to create a set of any length. Here is an example for the same:

n = 100; % Length of the set
mySet = 1:n;

You can refer to the following documentation to know more about the functions used:

• randi: https://www.mathworks.com/help/matlab/ref/randi.html
• randperm: https://www.mathworks.com/help/matlab/ref/randperm.html
• colon: https://www.mathworks.com/help/fixedpoint/ref/colon.html

Best Regards,

Abhishek Chakram