Validate logic of DPO oscillator

[kenorb]

double dpoBuffer[];

void calculateDPO() {
    int startIndex = period / 2 + 1;
    
    for (int i = 0; i < Bars - startIndex; i++) {
        double sum = 0;
        
        for (int j = 0; j < period; j++) {
            sum += Close[i + j] - Close[i + j - startIndex];
        }
        
        dpoBuffer[i] = sum / period;
    }
}