skyline_solution() - Leonardo Alvarez

int skyline_solution(const unsigned int skylineHeights[], unsigned int arrLen) {

    if (arrLen <= 0) { return 0; }

    unsigned int stripes = skylineHeights[0];

    for (int i = 1; i < arrLen; i++)
    {
        if (skylineHeights[i] > skylineHeights[i - 1]) {
            stripes += (skylineHeights[i] - skylineHeights[i - 1]);
        }
    }

    if (stripes > 1000000000) { return -1; }

    return stripes;
}