How to separate given vector into different conditions using MATLAB

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Set even values zero and other multiplied by 3

clear all

clc

A= [3 15 27; 6 18 30; 9 21 33; 12 24 36]; % Vector declaration

disp(A); %Display Vector before performing operation

for i = 1 : size(A)

for k = 1: 3

if rem(A(i,k), 2) == 0 %If number is even, then set it to 1

A(i, k) = 1;

else

A(i,k) = A(i,k)*3; %else multiple by 3

end

end

end

disp(A) %Display vector after operation

Set the positive values of x to zero

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

disp(x); %Display Vector before performing operation

for i = 1 : size(x, 2)

if x(1, i) > 0 %if number is greater than 0, then set it to 0

x(1, i) = 0;

end

end

disp(x);   %Display vector after operation

Set values that are multiples of 3 to 3

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

disp(x); %Display Vector before performing operation

for i = 1 : size(x, 2)

if rem(x(1, i), 3) == 0 %If number is multiple of 3, then set it to 3

x(1, i) = 3;

end

end

disp(x);   %Display vector after operation

Multiply the even values of x by 7

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

disp(x); %Display Vector before performing operation

for i = 1 : size(x, 2)

if rem(x(1, i), 2) == 0 %if number is even, then multiply it by 7

x(1, i) = x(1, i)*7;

end

end

disp(x);   %Display vector after operation

Extract the values of x that are greater than 5 into a vector called y

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

y = []; %Create empty vector to store result

j = 1;

for i = 1 : size(x, 2)

if x(1, i) > 5 %if number is greater than 5, then store it in vector y

y(1, j) = x(1, i);

j = j + 1;

end

end

disp('the new y matrix is:')

disp(y);

Select that larger value of x and print it into vector called z

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

y = []; %Create empty vector to store result

y = max(x)

disp('the new y matrix is:')

disp(y)

Set the values in x that are less than the mean to zero

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

disp(x); %Display Vector before performing operation

sum = 0;

for i = 1 : size(x, 2) %Get the sum of all numbers

sum = sum + size(1, i);

end

mean = sum / size(x, 2); %Calculate Mean

for i = 1 : size(x, 2)

if x(1, i) < mean %Set all the numbers that are less than mean to 0

x(1, i) = 0;

end

end

disp(x)   %Display vector after operation

Set the values in x that are above the mean to their difference from the mean

x= [6 20 8 13 -5 -4 0 12 7 9 3 2]; % Vector declaration

disp(x); %Display Vector before performing operation

sum = 0;

for i = 1 : size(x, 2) %Sum of all the numbers

sum = sum + size(1, i);

end

mean = sum / size(x, 2);    %Calculate Mean

for i = 1 : size(x, 2)

if x(1, i) > mean   %Set all the numbers that are greater than mean to 0

x(1, i) = 0;

end

end

disp(x);   %Display vector after operation