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Interview Question for Intern at Facebook:
Jan 27, 2012
given two sorted arrays, please merge them into a single array and still sorted. how to determine the size of array?
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Apr 2, 2012
To find the size of an array without passing it.. you can do it using templates in C++.
template <size_t N>
void p(int (&arr)[N]) {
cout << N << endl;
}
int main() {
int arr[10];
p(arr);
}
template <size_t N>
void p(int (&arr)[N]) {
cout << N << endl;
}
int main() {
int arr[10];
p(arr);
}
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by Interview Candidate:
But I got stuck at how to determin the size of array? If using the pointer (*p )which pointing the head of the array as the input, how do we compute the size of the array?