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path: root/online_stock_span.rs
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struct Span {
    price: i32,
    days: i32
}

struct StockSpanner {
    spans: Vec<Span>
}

impl StockSpanner {
    fn new() -> Self {
        StockSpanner {
            spans: Vec::new()
        }
    }
    fn next(&mut self, price: i32) -> i32 {
        let mut days = 1;
        while let Some(span) = self.spans.last() {
            if span.price <= price {
                days += span.days;
                self.spans.pop();
            } else {
                break;
            }
        }
        self.spans.push(Span{price, days});
        days
    }
}

fn main() {
    let obj = StockSpanner::new();
    let ret_1: i32 = obj.next(price);
}