How to make a code using flip & slide method and without using conv function ?

Example given, depends on how many user inputs: x = [userinputs]

x = [1 2 3];
h = [4 5 6];

Illustration pattern of the 5 element-by-element products (summing produces the convolution)

     1 2 3
 6 5 4           %first element is 4

     1 2 3  
   6 5 4         %2nd element is 5+8

     1 2 3
     6 5 4       %3rd element is 6+10+12

     1 2 3
       6 5 4     %4th element is 12+15

     1 2 3
         6 5 4   %5th element is 18

[KALYAN ACHARJYA]

There are numerous answers on this question, see here

[madhan ravi]

Why not conv() ?

[madhan ravi]

Why do you keep editing the question multiple times without responding to any of the comments or answers??

[argyn ramz]

I mean without using conv function, https://www.youtube.com/watch?v=Wzu3y9mVTQo

Answer 1

[Image Analyst]

It's simply convolution:

x = [1 2 3];
h = [4 5 6];
output = conv(x, h)

output =

4 13 28 27 18

[Image Analyst]

If you don't want to use the conv() function, because it's your homework assignment (not ours), and want to write it yourself, you can do it with for loop(s). See my attached demo where I do it in 2-dimensions. It will be easy for you to adapt it to 1-D.