帮我debug:package org.zkpk.lab import org.apache.spark.SparkContext import org.apache.spark.SparkConf import org.apache.spark.rdd.RDD import org.apache.spark.sql.SQLContext object sale_drug { case class Sale(date:String,cardId:Int,productId:Int,productName:String ,quantity:Int,money:Double,cost:Double) def main(args: Array[String]): Unit = { val conf = new SparkConf().setAppName("Pharmacy Sales Analysis").setMaster("local") val sc = new SparkContext(conf) sc.setLogLevel("ERROR") val sqlContext = new SQLContext(sc) // load data val data = sc.textFile("/home/zkpk/data.txt") // parse data val salesRDD: RDD[Sale] = data.map(line => line.split(" ")).map(arr => Sale(arr(0).toString, arr(1).toInt, arr(2).toInt, arr(3).toString, arr(4).toInt, arr(5).toDouble, arr(6).toDouble)) import sqlContext.implicits._ val df = salesRDD.toDF() val nameMoneyDF = df.select("productName", "money") nameMoneyDF.show() // calculate total sales quantity and revenue } }
时间: 2024-02-21 15:59:52 浏览: 60
1.coefficient[1] = 2;
p1.coefficient[2] = 3;
init_polynomial(&p2在代码中,你没有对数据进行过滤或者转换,也没有进行聚合操作,只是简单地使用, 1);
p2.coefficient[0] = 4;
p2.coefficient[1] = 5;
了select函数来选取两列数据,因此,你应该添加一些聚合操作,比如groupByKey或reduce // 计算两个多项式的乘积
p3 = multiply_polynomial(&p1, &p2);
//ByKey函数来计算销售总量和总收益。以下是修改后的代码:
```scala
package org.zkpk 打印结果
printf("p1(x) = ");
print_polynomial(&p1);
printf("p2(x) =.lab
import org.apache.spark.SparkContext
import org.apache.spark.SparkConf
import org.apache.spark.rdd.RDD
import org ");
print_polynomial(&p2);
printf("p3(x) = ");
print_polynomial(&p3);
// .apache.spark.sql.SQLContext
object sale_drug {
case class Sale(date:String,cardId:Int,productId:Int,productName:String ,quantity释放内存
free_polynomial(&p1);
free_polynomial(&p2);
free_polynomial(&p3);
return 0;
}
```
该代码中,我们使用结构体表示多项式和向量,其中多项式:Int,money:Double,cost:Double)
def main(args: Array[String]): Unit = {
val conf = new SparkConf().包含了次数和系数,向量包含了长度和元素。在主函数中,我们创建了两个setAppName("Pharmacy Sales Analysis").setMaster("local")
val sc = new SparkContext(conf)
sc.setLogLevel("ERROR")
val sqlContext = new SQLContext(sc)
// load data
val data = sc.textFile("/home/zkpk/data.txt多项式并计算它们的乘积,然后打印结果。在计算乘积的函数中,我们使用")
// parse data
val salesRDD: RDD[Sale] = data.map(line => line.split(" ")).map(arr => Sale了快速傅里叶变换算法,将两个多项式转换为向量后进行相乘,并将结果(arr(0).toString, arr(1).toInt, arr(2).toInt, arr(3).toString, arr(4).toInt再转换回多项式。最后,我们在释放所有多项式和向量的内存。
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