Finding the position of the maximum element

Question

Is there a standard function that returns the position (not value) of the maximum element of an array of values?

For example:

Suppose I have an array like this:

sampleArray = [1, 5, 2, 9, 4, 6, 3] 

I want a function that returns the integer of 3 that tells me that sampleArray[3] is the largest value in the array.

Answer 1

In the STL, std::max_element provides the iterator (which can be used to get index with std::distance, if you really want it).

int main(int argc, char** argv) {   int A[4] = {0, 2, 3, 1};   const int N = sizeof(A) / sizeof(int);    cout << "Index of max element: "        << distance(A, max_element(A, A + N))        << endl;    return 0; } 

Answer 2

Or, written in one line:

std::cout << std::distance(sampleArray.begin(),std::max_element(sampleArray.begin(), sampleArray.end()));