We know that a RW head ( or also known as read/write head) is a component of device which is usually appeared on the hard drive which is used to read and write data by the hard drive's disk . When data required to be read or write, the read/write arm is regulated by actuator.

[An actuator is a part of a device that is mainly responsible for moving and controlling a mechanism or system.]

Hence, All the read/write heads a hard disk are controlled by an actuator .

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3 years ago

Write a method doubleUp that doubles the size of a list of integers by doubling-up each element in the list. Assume there's enou

Savatey [412]

Answer:

The solution in Python is as follows:

class myClass:

def doubleUp(self,doubleList):

doubleList[:0] = doubleList[::2] = doubleList[1::2] = doubleList[:]

newlist = []

n = int(input("Number of elements: "))

for i in range(n):

num = int(input(": "))

newlist.append(num)

list = myClass()

list.doubleUp(newlist)

print(newlist)

Explanation:

Start by creating a class

The solution in Python is as follows:

class myClass:

Then define the method doubleUp

def doubleUp(self,doubleList):

The duplicates is done here

doubleList[:0] = doubleList[::2] = doubleList[1::2] = doubleList[:]

The program main begins here

This defines an empty list

newlist = []

This prompts user for number of elements

n = int(input("Number of elements: "))

The following iteration get the elements of the list