滚动窗口中的体积分布

Question

我想在 7 天的窗口中每天进行体积分布。

例如第一周：

• 在星期一我在不同时间得到 4 件物品，每件 1 件，
• 周二 3 项 1 等

并相应地改变状态。

Mon	Tue	Wed	Thu	Fri	Sat	Sun
4	3	5	0	4	3	1

但问题是当第二周到来时，我希望星期一从 0 开始（并继续求和），其他日子被保留，其他日子也一样，当新的星期二到来时它从 0 开始......等.有什么聪明的方法可以做到这一点吗？

我可以很容易地识别出项目需要用模运算符降落的“箱子”，但我想不出某种方法来知道每一天究竟什么时候需要从 0 开始，因为“新星期一”已经到来（并继续总结星期一新东西）。

Answer 1

当我使用时间戳时，夏令时可能会出现问题，我对此表示怀疑。但这似乎有效。如果某些代码看起来很奇怪，这可能是因为它是为了适应 solidity 而没有 javascript 的所有优点

class rollingWindow {
      constructor() {
        this.refTime = new Date("01/01/2023 00:00:00");
        // bins - days of the week (starting from Sunday)
        this.distribution = {
          0: { vol: 0, week: 0 },
          1: { vol: 0, week: 0 },
          2: { vol: 0, week: 0 },
          3: { vol: 0, week: 0 },
          4: { vol: 0, week: 0 },
          5: { vol: 0, week: 0 },
          6: { vol: 0, week: 0 }
        };
      }
    }
    
    rollingWindow.prototype.add = function (volume, datetime) {
      let diff = (datetime.getTime() - this.refTime.getTime());
      let bin = (diff / 1000/60/60/24)  % 7;
     console.log("bin:" + bin); // day of the week
     
      const floorargm = diff / (7 * 24 * 60 * 60 * 1000)
      let currentWeek = floorargm - (floorargm % 1)
    
    
      console.log("Week:"+currentWeek);
    
      if (this.distribution[bin].week < currentWeek) {
        this.distribution[bin].vol = 0;
        this.distribution[bin].week = currentWeek;
      }
      this.distribution[bin].vol += volume;
    };
    
    rollingWindow.prototype.get = function(datetime) {
      let diff = (datetime.getTime() - this.refTime.getTime());
      let bin = (diff / 1000/60/60/24)  % 7;
      const floorargm = diff / (7 * 24 * 60 * 60 * 1000);
      let currentWeek = floorargm - (floorargm % 1);
    
      // sum left bins and current bin
      let sum=0;
      for (let i = bin; i >= 0; i--) {
        if (this.distribution[i].week === currentWeek) {
            sum+= this.distribution[i].vol;
        }
        if(i === 0) {
          break;
        }
      }
      // sum right bins
      for (let i = bin + 1; i < 7;i++) {
        if (this.distribution[i].week === currentWeek - 1) {
          sum+= this.distribution[i].vol;
        }
      }
    
      return sum;
    }
    let rolling = new rollingWindow()
    
    rolling.add(1, new Date("01/01/2023 00:00:00"));
    rolling.add(1, new Date("01/02/2023 00:00:00"));
    rolling.add(1, new Date("01/02/2023 00:00:00"));
    rolling.add(1, new Date("01/03/2023 00:00:00"));
    rolling.add(1, new Date("01/04/2023 00:00:00"));
    rolling.add(1, new Date("01/05/2023 00:00:00"));
    rolling.add(1, new Date("01/06/2023 00:00:00"));
    rolling.add(1, new Date("01/07/2023 00:00:00"));
    rolling.add(1, new Date("01/08/2023 00:00:00"));
    
    let sum = rolling.get(new Date("01/08/2023 00:00:00"));
    
    
    console.log(sum);