setdiff

setdiff — returns components of a vector which do not belong to another one

Calling sequence

v=setdiff(a,b)  
[v,ka]=setdiff(a,b)

`a`	: vector of real numbers or strings
`b`	: vector of real numbers or strings
`v`	: vector of real numbers or strings with same orientation than `a`
`ka`	: row vector of integers, ka(i) is the location of v(i) in a

setdiff(a,b) returns a sorted vector which retains the a entries which are not in b

[v,ka]=setdiff(a,b) returns a sorted vector which retains the a entries which are not in b and the location of these entries in a.



 a = [223;111;2;4;2;2];
 b = [2;3;21;223;123;22];
 setdiff(a,b)
 [v,k]=setdiff(string(a),string(b))