Comparing all the elements of an array with all the elements of another array

Hello ,

I want to compare Compare all the elements of an array with all the elements of another array and save the result to a now array.

i have an array A=[100 110 120 130.....600]

which i want to compare with B = [100 103 105 120 123 128 130 200 205 207 300 200 100 ]

if the value of B mateches with any element of array the value of A sholud be stored in new array C and the value should not repeal(like if there is already 100 in the array C then i should not write it again. )

the output should look like this

C = [100 120 130 200 300]

Answer 1

[Bruno Luong]

This returns the elements in order as in B, from left to right

A = 100:10:600
B = [100 103 105 120 123 128 130 200 205 207 300 200 100 ]

C = unique(B(ismember(B,A)),'stable')

Answer 2

[Ameer Hamza]

Try this

C = A(ismember(A,B))

[CV]

thanks for the solution.

if i want to set the limit lets say if the value of element of B is less or grater than the element of the A minus 2 or plus 2 then also it should return the element of A.

example of there is 102, 198 and 99 in B then also C should be 100 and 200.

[Bruno Luong]

Change statement

ismember(...)

to

ismembertol(..., 2, 'DataScale', 1)

[CV]

i tried the statement of B = [102 150 175 200 205 210 300 99]; an it returns C = [102 150 200 210 300 99] but i should return C [100 150 200 210 300]

but after executing

C = A(ismembertol(A,B,2, 'DataScale', 1))

it returns the correct answer.

thanks