what is the use of for(auto str: s){
cout<<str<<",";
}
please explain???
Set example unique permutation
this is for each loop in c++
str is iterating on each value of s
so str will contains the each value of s hence we print it
for(auto str: s){
cout<<str<<",";
}
it will print all values in s
if you have more doubts regarding this feel free to ask
i hope this helps
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