union

union — extract union components of a vector

Calling sequence

[v, [ka,kb]]=union(a,b)

`a`	: vector of real numbers or strings
`b`	: vector of real numbers or strings
`v`	: row vector of real numbers or strings
`ka`	: row vector of integers
`kb`	: row vector of integers

union(a,b) returns a sorted row vector which retains the unique entries of [a(:);b(:)].

[v,ka,kb]=union(a,b) also returns index vectors ka and kb such that v is a sorted combination of the entries a(ka) and b(kb).



A=round(5*rand(10,1));
B=round(5*rand(7,1));

union(A,B)
[N,ka,kb]=union(A,B)

union('a'+string(A),'b'+string(B))