public Quote Clone() {
Quote result = new Quote();
result.Name = this.Name;
result.CurrentValue = this.CurrentValue;
result.PreviousValue = this.PreviousValue;
return result;
}
void UpdateQuote(Quote quote) {
double value = quote.CurrentValue;
quote.PreviousValue = value;
int percentChange = random.Next(0, 201) - 100;
double newValue = value + value * (5 * percentChange / 10000.0); // single change should be change less than 5%
if (newValue < 0)
newValue = value - value * (5 * percentChange / 10000.0); // single change should be change less than 5%
quote.CurrentValue = newValue;
}