cpp-course/modules/04_arrays_and_strings/src/c_arrays.cpp

#include "c_arrays.hpp"

#include <climits>

namespace arrays {

auto array_sum(const int* data, const std::size_t size) -> int {
    auto sum = 0;
    for (std::size_t i = 0; i < size; ++i) {
        sum += data[i];
    }
    return sum;
}


auto array_max(const int* data, const std::size_t size) -> int {
    auto max = INT_MIN;
    for (std::size_t i = 0; i < size; ++i) {
        if (data[i] > max) {
            max = data[i];
        }
    }
    return max;
}

void reverse_array(int* data, const std::size_t size) {
    auto swap = [&data](const std::size_t i, const std::size_t j) {
        const auto temp = data[i];
        data[i] = data[j];
        data[j] = temp;
    };
    for (std::size_t i = 0; i < size / 2; ++i) {
        swap(i, size - i - 1);
    }
}

}  // namespace arrays