1. What is Java SE?

Dynamically allocatе mеmory for a DNA objеct and storе its addrеss in a variablе namеd dnaPtr

borishaifa [10]

Answer:

DNA obj =new DNA;//obj object created dynamically.

DNA *dnaPtr=&obj.//dnaPtr to store the address of the object.

Explanation:

The above written statements are in C++.The DNA object is created dynamically and it is done in C++ by using new keyword which allocates the heap memory for the object.

Then a dnaPtr is created of type DNA so that it can store the address of the DNA objects.

4 0

2 years ago

Write Python algebraic expressions corresponding to the following statements: (a) The sum of the first five positive integers (b

lbvjy [14]

Answer:

#part a

#sum of first 5 positive number

Sum=5*(5+1)/2

print("sum of first 5 positive integer is: ",Sum)

#part b

# declare age of all

Sara_age=23

Mark_age=19

Fatima_age=31

ave_age=(Sara_age+Mark_age+Fatima_age)/3

print("average age of Sara,mark and Fatima is: ",ave_age)

#part c

#find number of times

no_of_times=int(403/73)

print(" number of times when 73 goes into 403 is: ",no_of_times)

#part d

#find remainder

rem=403%73

print("when 403 is divided by 73 then remainder is: ",rem)

#part e

#calculate 2 to pawer 10

two_pow=2**10

print("2 to power 10 is: ",two_pow)

#part f

#declare height of both

sara_h=54

mark_h=57

diff_h=abs(sara_h-mark_h)

print("The absolute difference between height of Sara and Mark is: ",diff_h)

#part g

#find the minimum among three

print("lowest price among the three($34.99,$29.95,$31.50) is: $",min(34.99,29.95,31.50))

Explanation:

In part a, sum of first 5 positive number is calculated as 5*(5+1)/2.In part b, add the age of three and divide it by 3. In part c, use "/" to find number of times 73 goes into 403.In part d, use "%" to find remainder when 403 is divide by 73.In part e, 2 to the 10th power is calculated as 2**10.In part f, use abs() to find the absolute difference.In part g, min() function is used to find lowest among the 3 prices.

Output:

sum of first 5 positive integer is: 15.0

average age of Sara,mark and Fatima is: 24.333333333333332

number of times when 73 goes into 403 is: 5

when 403 is divided by 73 then remainder is: 38

2 to power 10 is: 1024

The absolute difference between height of Sara and Mark is: 3

lowest price among the three($34.99,$29.95,$31.50) is: $ 29.95

5 0

3 years ago

7.8.1: Function pass by reference: Transforming coordinates. Define a function CoordTransform() that transforms the function's f

Lilit [14]

Answer:

Here is the CoordTransform() function:

void CoordTransform(int xVal, int yVal, int &xValNew, int &yValNew){

xValNew = (xVal + 1) * 2;

yValNew = (yVal + 1) * 2; }

The above method has four parameters xVal and yVal that are used as input parameters and xValNew yValNew as output parameters. This function returns void and transforms its first two input parameters xVal and yVal into two output parameters xValNew and yValNew according to the formula: new = (old + 1) *

Here new variables are xValNew and yValNew and old is represented by xVal and yVal.

Here the variables xValNew and yValNew are passed by reference which means any change made to these variables will be reflected in main(). Whereas variables xVal and yVal are passed by value.

Explanation:

Here is the complete program:

#include <iostream>

using namespace std;

void CoordTransform(int xVal, int yVal, int &xValNew, int &yValNew){

xValNew = (xVal + 1) * 2;

yValNew = (yVal + 1) * 2;}

int main()

{ int xValNew;

int yValNew;

int xValUser;

int yValUser;

cin >> xValUser;

cin >> yValUser;

CoordTransform(xValUser, yValUser, xValNew, yValNew);

cout << "(" << xValUser << ", " << yValUser << ") becomes (" << xValNew << ", " << yValNew << ")" << endl;

return 0; }

The output is given in the attached screenshot

7 0

2 years ago

Where in the Formula tab on the ribbon would you find the Use in Formula function?

Leviafan [203]

Answer:

In Function library you would find the use in Formula function

5 0

2 years ago

Read 2 more answers

A small grocery store has one checkout.You have been asked to write a program to simulate the grocery store as it checks out cus

Masteriza [31]

Answer:

Check the explanation

Explanation:

PYTHON CODE :

#import random function

from random import randint

#class Queue declaration

class Queue:

#declare methods in the Queue

def __init__(self):

self. items = []

def isEmpty(self):

return self. items == []

def enqueue(self, item):

self.items. insert(0, item)

def dequeue(self):

return self. items. pop()

def size(self):

return len(self. items)

def getInnerList(self):

return self.items

#This is customer Queue

class Customer:

#declare methods

def __init__(self,n):

self.numberOfItems=n

def __str__(self):

return str(self. numberOfItems)

def getNumberOfItems(self):

return self. numberOfItems

#This is expresscheker customer queue

class Expresschecker:

def __init__(self,n):

self.numberOfItems=n

def __str__(self):

return str(self. numberOfItems)

def getNumberOfItems(self):

return self. numberOfItems

#Returns random checkout time, based on number of items

def checkOut(Expresschecker):

items = Expresschecker. getNumberOfItems()

if items <= 10:

return randint(2, 5)

if items <= 20:

return randint(6, 9)

return randint(10, 14)

#Initiate queue for the Expresschecker

Expresschecker = Queue()

#declare total customers

totalcheckoutCustomers = 10

#express Customers shopping..

for i in range(totalcheckoutCustomers):

#Each putting Between 1 to 25 items

randomItemsQty = randint(1, 25)

customer = Customer(randomItemsQty)

#Getting into queue for checkout

Expresschecker. enqueue(customer)

#====Now all express Customers having

#random qty of items are in Queue======

#intial time

totalTime=0

#define the size of the queue

totalcheckoutCustomers = Expresschecker. size()

#using for-loop until queue is empty check out

#the items in the express cheker queue

while not(Expresschecker. isEmpty()):

totalTime+=randint(1,5)

#Picking a customer

expresscustomer = Expresschecker. dequeue()

#Processing the customer

timeTaken = checkOut(expresscustomer)

#add the time for each custimer

totalTime+=timeTaken

#compute average waiting time

averageWaitingTime = totalTime/totalcheckoutCustomers

#display the average waiting time

print("Average waiting time for the express customer queue is "

+str(averageWaitingTime)+" minutes ")

print("Remaining Custimers in the express customer Queue is: ",

Expresschecker. size())

#Returns random checkout time, based on number of items

def checkOut(customer):

items = customer. getNumberOfItems()

if items <= 10:

return randint(1, 5)

if items <= 20:

return randint(6, 10)

return randint(11, 15)

#in

customersQueue = Queue()

totalCustomers = 20 #Change number of customers here

#Customers shopping..

for i in range(totalCustomers):

#Each putting Between 1 to 25 items

randomItemsQty = randint(1, 25)

customer = Customer(randomItemsQty)

#Getting into queue for checkout

customersQueue. enqueue(customer)

#====Now all Customers having random qty

#of items are in Queue======

totalTime=0

totalCustomers = customersQueue. size()

while not(customersQueue. isEmpty()):

totalTime+=randint(1,5)

#Picking a customer

customer = customersQueue. dequeue()

#Processing the customer

timeTaken = checkOut(customer)

totalTime+=timeTaken

#Result=============================

averageWaitTime = totalTime/totalCustomers

print("Average wait time for the customer queue is

"+str(averageWaitTime)+" minutes ")

print("Remaining Customers in the customer Queue is:

",customersQueue. size())

5 0

3 years ago