What are the functions below accomplishing? Which one exhibits superior performance? How do you assess the speed difference between the two functions?

6. What are the functions below accomplishing? Which one exhibits superior performance? How do you assess the speed difference between the two functions? template : : Function_1(const elemType \&item) const \{ int loc; bool found = false; for (loc =0; loc [ loc ]== item) \{ found = true; break; \} if (found) return loc; else return -1 ; \} template int orderedArrayListType: : Function_2(const elemType \&item) const \{ int first =0; int last = this > length -1 ; int mid; bool found = false; while (first mid= (first + last) /2; if (this->list[mid] == item) found = true; else if (this->list[mid] > item) last =mid1; else first =mid+1; \} if (found) return mid; else return -1 ; \}