In this exercise, you will create a couple of helper methods for ArrayLists in a class called ArrayListMethods.

The decimal number 8620 can be expressed in the following ways:

a = 1000 0110 0010 0000

b = 1011 1001 0101 0011

c = 1110 1100 0010 0000

d = 10000110101100

I hope these representations answer your question and prove useful.

Answer:

Below is the explanation for the C code.

Explanation:

#include <stdio.h>

#include <stdbool.h>

int main(void) {

int userNum;

bool isPositive;

bool isEven;

scanf("%d", &userNum);

isPositive = (userNum > 0);

isEven = ((userNum % 2) == 0);

if(isPositive && isEven){

  printf("Positive even number");

}

else if(isPositive &&!isEven){

  printf("Positive number");

}

else{

  printf("Not a positive number");

}

printf("\n");

return 0;

}

Answer:

import random

random.seed(1,10) # Note: seed takes one argument, so this line has an error

a = random.randint(1, 10)

b = random.randint(1, 10)

print("Calculate: " + str(a) + " X " + str(b) + "?")

ans = int(input("Your answer: "))

if ans == a * b:

print("Well done!")

else:

print("That's wrong!")

Explanation:

Answer:

Below is the Python code:

stock_prices = input().split() #this takes input and separates it into a list

for price in stock_prices: #this loops through each stock price

   print("$",price) #this outputs each stock price prefixed by a dollar sign

Explanation:

The logic behind the program is clearly outlined in the attached comments. To illustrate the program's workings, let's consider an example:

Imagine the user inputs the stock_prices values of

34.62 76.30 85.05

The input() method captures user input, while the split() method divides the input string, providing a list of strings as:

['34.62', '76.30', '85.05']

Following that, the loop statement for price in stock_prices: iterates through each item in the list, and print("$",price) displays each value from the list on the output screen with a dollar sign, as follows:

$ 34.62                                                                                                            

$ 76.30                                                                                                            

$ 85.05    

Answer:

def average_strings(lst):

   total_length = 0

   avg = 0

   for s in lst:

       total_length += len(s)

   avg = total_length/len(lst)

   return avg

Explanation:

Define a function named average_strings that takes a single argument, lst

Initialize both total length and avg variables

Utilize a for loop to iterate through lst, accumulating the length of each string into total length

Once the loop ends, compute the average by dividing the total length by the number of elements in lst

Return the computed average.