write a MATLAB code to find the largest element in an array of 10 elements then check whether the number is ODD or EVEN Note: use only (for-loop and if-statement) method t

help

[the cyclist]

Please read these tips for getting an answer here.

Spoiler: Posting a homework assignment without showing any effort is not the way.

[Steven Lord]

This sounds like a homework assignment. If it is, show us the code you've written to try to solve the problem and ask a specific question about where you're having difficulty and we may be able to provide some guidance.

If you aren't sure where to start because you're not familiar with how to write MATLAB code, I suggest you start with the free MATLAB Onramp tutorial (https://www.mathworks.com/support/learn-with-matlab-tutorials.html) to quickly learn the essentials of MATLAB.

If you aren't sure where to start because you're not familiar with the mathematics you'll need to solve the problem, I recommend asking your professor and/or teaching assistant for help.

[3lewwi]

@the cyclist its not a homework bro i just need help and i solved the question by use (min,max) and don't know ho to solve it by use (if)

[3lewwi]

@Steven Lord bro i solved by another way but donot know how i solved it by use if or loop

[the cyclist]

Regardless of whether this is homework or not, using the tips in the link I posted (and showing what you have tried so far) is the fastest method to get an answer. Volunteers here are more motivated to help you when we see that you are doing your part. This is not simply a consulting service where you post a problem and have someone do your coding for you.

You could also explain why you need to use a for-loop, which is clearly not the best way to solve this problem. (This is a hallmark of homework questions. That face, and the style of the prose, is why @Steven Lord and I have both assumed this is homework.)

So, maybe follow the advice of two people who have helped thousands of folks here, and do what we suggest.

Answer 1

[Sam Chak]

Hi @3lewwi

I think the advice was misconstrued. Generally, the forum moderators never know whether it is a school homework or a company project.

As long as you post something that sounds like commanding others to complete the task for you (without showing your codes or at least findings from MathWorks / Wikipedia / Google results), then it will be flagged and probably deleted later.

Easiest way to avoid this is to show your findings about the properties of ODD and EVEN numbers. Give your ideas on how to solve the problem even though you don't know how to write the MATLAB Code.

Look up some good info about Parity. Hope it helps.

https://en.wikipedia.org/wiki/Parity_(mathematics)

I randomly generated 10 integers. How do you determine whether the integers are ODD or EVEN numbers (without knowledge about the Parity)?

for i = 1:10
    x(i) = round(100*rand);
end
x

[3lewwi]

@Sam Chak thanks bro , i will check it

[Sam Chak]

Let me give you a hint. Use mod(integer, divisor). You can even fit it into the for loop shown in my previous post.

https://www.mathworks.com/help/matlab/ref/mod.html

[3lewwi]

i dont know how to find for element , i know only for single number like :

a=4

if rem(a,2)==0

output='even'

else

output='odd'

end

[Torsten]

That's enough. You only need to do it for a single number (namely for the biggest element within the array of ten elements after you have found it).

[3lewwi]

@Sam Chak big thanks brooo i solve it with your help , sorry my english lung not good and cant say more thinkful word , the solved is :

for i = 1:10

x(i) = round(100*rand);

end

x

c=max(max(x))

if rem(c,2)==0

output='even'

else

output='odd'

end

[3lewwi]

@Torsten yess , see the solved

for i = 1:10

x(i) = round(100*rand);

end

x

c=max(max(x))

if rem(c,2)==0

output='even'

else

output='odd'

end

[Torsten]

@3lewwi

You're not allowed to use "max".

[3lewwi]

@Torsten how can find largest by use if ?

[Sam Chak]

I'm thinking... may work, or may not work...

Since max() is not allowed, and there are only 10 elements, then you can search linearly by comparing two adjacent elements (Left - Right < 0 or > 0), and then discard and store the element with the greater value.

At the end of the search, you can possible use the find() function to locate the index of the largest value.

I can open max.m file, but I don't want to do that. Thinking fires up the neurons in your mind into finding solutions.

Now, what if there are thousands of elements in the array?

[3lewwi]

@Sam Chak i will keep try , thanks bro

[3lewwi]

@Sam Chak i should compare between element in the array , but how ? i only work with 2 or 3 number only

[Walter Roberson]

Take the first number as the potential maximum. Now examine each number in turn. Is the number you are examining greater than the largest number previous number? If it is, then the current number becomes the new potential maximum.

[Steven Lord]

Suppose I gave you a list of numbers and asked you to find the largest. Don't worry about how to implement this in MATLAB yet, just walk me through the steps you'd follow with pencil and paper to find the largest. Don't just jump to "I look at the list and select the largest", break it down into simple steps.

The list of numbers is:

rng(42, 'twister')
randperm(10)

ans = 1×10

7 6 5 1 4 9 10 3 8 2

Hint: remember one additional number, the current "leader". To start off, that current leader is -infinity.

[Sam Chak]

Hi @Steven Lord and @Walter Roberson

I have successfully written a code that can find the maximum value and tells me the locations of that number.

In a very rare situation (which I just discovered), it randomly generated two largest integers. How do I prevent generating two or more repeated numbers? (Sorry, sorf of hijacking this question)

[Torsten]

@Sam Chak

help randperm

[Sam Chak]

Thanks @Torsten. Learned new things today...

p = randperm(n) returns a row vector containing a random permutation of the integers from 1 to n without repeating elements.