subtract Return an RDD with the elements from `this` that are not in `other` . def subtract(other: RDD[T]): RDD[T] def subtract(other: RDD[T], numPartitions: Int): RDD[T] def subtract(other: RDD[T], p: Partitioner): RDD[T] val a = sc.parallelize(…
7.4 Write methods to implement the multiply, subtract, and divide operations for integers. Use only the add operator. 这道题让我们实现乘法加法和除法,而且规定了只能使用加法.那么我们先来看如何用加法来实现减法,我们知道,减去一个数就等于加上这个数的负数.那么我们先写一个求负数的函数,对于n来说,我们累计n个-1,对于-n来说,我们累计n个1.这样减法的就搞定了,我们再来看乘法,乘…
SUBTRACT Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 2037 Accepted: 901 Special Judge Description We are given a sequence of N positive integers a = [a1, a2, ..., aN] on which we can perform contraction operations. One contractio…