Question

ale boh th Blac Your job is to draw exercise making sure that the flowchart is correspondent to the MATLAB code given. That means that variable names, and order of calculations need to match between the code and the nlowchart. Finally, make sure you understand the MATLAB code. It is assumed that if you can do the flowchart of a complicated code, you can perform logical statements of that magnitude. Make your flow chart more detailed than ones in the past- include variable names and logical operators in the blocks. Problem 4(1S Points) Write a while-loop in MATLAB that creates an array x using the following algorithm: It creates a single random number it checks if the random number is bigger or equal than zero and less than O.S, or if it is bigger than 0.5 and less or equal to 1. If it is the first iteration run, which means the first value of x will be defined, make the first value of x equal to zero. If it bigger or equal than zero and less than 0.5, make the value of x at the location defined by the iteration number of the while loop equal to the last previous value of x plus 1 If it is bigger than 0.5 and less or equal to 1, make the value of x at the location defined by the iteration number of the while loop equal to the previous value of x minus 0.5 o o o To stop the while loop, check for one of these two conditions: If the while loop has run for 50 or more, break the while loop and let the code finish If the last six values of x are positive, then leave the while loop o o
matlab only

Answer 1

% MATLAB code

i=1; % iteration variable
index = 1; % array index variable. Cannot be same as iteration variable since in some iterations conditions won't be satisfied
% to enter value in array, and that index in array would not be created giving rise to error in next iteration.

while (1) %infinite while loop
if index==1 % check condition for first element of array
x(index) =0;
index = index+1;
else
number = randn(1); % generate a random number
  if (number>=0 && number <0.5) % condition as given in question
x(index) = x(index-1)+1;
index = index+1;
elseif (number>0.5 && number <=1)
   x(index) = x(index-1)-0.5;
   index = index+1;
end
end

if index>=6 % check if array length is at least 6; if yes, check last 6 elements of array are positive
if(x(index-1) >0 && x(index-2) >0 && x(index-3) >0 && x(index-4) >0 && x(index-5) >0 && (index-6)>0)
break; % come out of while loop if last 6 values in array are positive
end
end

if i>=50
break; % come out of while loop for 50 or more iterations
end

i=i+1;
end