Random & Loops

Question 1

How to generate random numbers?

Answer 1

By using the randi function:

randi(value) generates random numbers from 1 to value

randi(value, m, n) this generates random numbers from 1 to value in an mxn matrix

Question 2

How do we use logical equality and not assignment?

Answer 2

By using == (double equality)

3 == 3 (True)

2 == 5 (False)

Question 3

How to create conditionals?

Answer 3

Using the “if - end” statement

If condition
process if condition is true
End

Question 4

How to display strings or variables?

Answer 4

Using the display command:

disp(“hello world”)
disp(var)

Var must contain something

Question 5

How can we divide our code in sections?

Answer 5

By using double percentages

%% Creates a section

Question 6

How do we run for loops?

Answer 6

for i = initial:final
Statement
end

Question 7

For loops with jumps

Answer 7

for initial: jump : final:
Statement
end

Question 8

How to time the process of a section of code?

Answer 8

Using tic toc built in function:

Tic

Section of code with several lines

Toc

(We can assign toc to a variable)

Question 9

How do we create while loops?

Answer 9

while condition
Statements
end

If condition is true, statement will execute, otherwise, it will jump the the while loop

Question 10

How to force the computer to terminate the execution of a program?

Answer 10

Ctrl + C

Question 11

How to stop a loop after achieving what you wanted?

Answer 11

By using the “break” command.