Symmetric difference: Difference between revisions
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set(Jim)
set(Jim, Serena)</pre>
=={{header|Phix}}==
<lang Phix>function Union(sequence a, sequence b)
for i=1 to length(a) do
if not find(a[i],b) then
b = append(b,a[i])
end if
end for
return b
end function
function Difference(sequence a, sequence b)
sequence res = {}
for i=1 to length(a) do
if not find(a[i],b)
and not find(a[i],res) then
res = append(res,a[i])
end if
end for
return res
end function
function Symmetric_Difference(sequence a, sequence b)
return Union(Difference(a, b), Difference(b, a))
end function
sequence a = {"John", "Serena", "Bob", "Mary", "Serena"},
b = {"Jim", "Mary", "John", "Jim", "Bob"}
?Symmetric_Difference(a,a)
?Symmetric_Difference(a,b)
?Symmetric_Difference(b,a)
?Symmetric_Difference(b,b)</lang>
{{Out}}
<pre>
{}
{"Jim","Serena"}
{"Serena","Jim"}
{}
</pre>
=={{header|PHP}}==
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