日期: 2020 年 7 月 28 日

package com.digitalevers.random.clicks

///模拟点击行为 
//给出一个总的点击数量 比如100000点击一天
//然后模拟拆解出随机分布在每分钟内点击数 将其存入一个长度为 24 * 60 的数组中
object ArrayTest {
  val unit = 60
  val timeLength = 24 /// hours
  val baseLimit = 5 //基准极限 进入递归过程的增减幅度
  val clicks: Array[Int] = new Array[Int](unit * timeLength)
  var totalAmount = 0

  def main(args: Array[String]): Unit = {
    totalAmount = scala.io.StdIn.readInt()
    randomProcess(totalAmount, baseLimit)
    printf("" + clicks.sum)
  }


  def randomProcess(srcData: Int, baseLimit: Int): Unit = {
    val perMin = (srcData / (unit * timeLength)).toInt
    ////////////////////////////
    if (perMin <= 0) {
      val sliceMount = Math.abs(srcData / baseLimit).toInt
      for (i <- 1 to sliceMount) {
        val index = util.Random.nextInt(unit * timeLength)
        if (srcData < 0) {
          //压缩数据 （做出判断防止出现负数）
          if ((clicks(index) - baseLimit) >= 0) {
            clicks(index) -= baseLimit
          }
        } else {
          //增加数据
          clicks(index) += baseLimit
        }
      }
    } else {
      for (i <- 0 until (unit * timeLength)) {
        clicks(i) = util.Random.nextInt((perMin * 2 + 1))
      }
    }
    ///////////////
    if (totalAmount != clicks.sum) {
      if (totalAmount - clicks.sum > baseLimit || totalAmount - clicks.sum < -baseLimit) {
        //继续递归过程
        randomProcess(totalAmount - clicks.sum, baseLimit)
      } else {
        randomProcess(totalAmount - clicks.sum, 1)
      }
    }
  }

  /////////end process
}