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nevsk [136]
3 years ago
7

Consider the following method, remDups, which is intended to remove duplicate consecutive elements from nums, an ArrayList of in

tegers. For example, if nums contains {1, 2, 2, 3, 4, 3, 5, 5, 6}, then after executing remDups(nums), nums should contain {1, 2, 3, 4, 3, 5, 6}.
public static void remDups(ArrayList nums)
{
for (int j = 0; j < nums.size() - 1; j++)
{
if (nums.get(j).equals(nums.get(j + 1)))
{
nums.remove(j);
j++;
}
}
}
The code does not always work as intended. Which of the following lists can be passed to remDups to show that the method does NOT work as intended?
A. {1, 1, 2, 3, 3, 4, 5}
B. {1, 2, 2, 3, 3, 4, 5}
C. {1, 2, 2, 3, 4, 4, 5}
D. {1, 2, 2, 3, 4, 5, 5}
E. {1, 2, 3, 3, 4, 5, 5}
Computers and Technology
1 answer:
MAXImum [283]3 years ago
3 0

Answer:

B. {1, 2, 2, 3, 3, 4, 5}

Explanation:

Given

The above code segment

Required

Determine which list does not work

The list that didn't work is B.\ \{1, 2, 2, 3, 3, 4, 5\}

Considering options (A) to (E), we notice that only list B has consecutive duplicate numbers i.e. 2,2 and 3,3

All other list do not have consecutive duplicate numbers

Option B can be represented as:

nums[0] = 1

nums[1] = 2

nums[2] = 2

nums[3] = 3

nums[4] = 3

nums[5] = 4

nums[6] = 5

if (nums.get(j).equals(nums.get(j + 1)))

The above if condition checks for duplicate numbers.

In (B), when the elements at index 1 and 2 (i.e. 2 and 2) are compared, one of the 2's is removed and the Arraylist becomes:

nums[0] = 1

nums[1] = 2

nums[2] = 3

nums[3] = 3

nums[4] = 4

nums[5] = 5

The next comparison is: index 3 and 4. Meaning that comparison of index 2 and 3 has been skipped.

<em>This is so because of the way the if statement is constructed.</em>

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Montano1993 [528]

Answer:

1/2000

Explanation:

import java.util.Scanner;

public class InputExample {

public static void main(String [] args) {

Scanner scnr = new Scanner(System.in);

System.out.print("Enter birth month and date:");//comment this line if not needed

int birthMonth=scnr.nextInt();

int birthYear=scnr.nextInt();

String output= birthMonth+"/"+birthYear+"\n";

System.out.println(output);

}

}

if using this code the out put should be 1/2000

5 0
3 years ago
Write a program that allows a user to choose to roll between 1 and 100 dice between 1 and 1000 times
s344n2d4d5 [400]

Answer:

Here is a Python program that allows a user to choose to roll between 1 and 100 dice between 1 and 1000 times. The program uses a while loop to continuously prompt the user for input until they enter a valid number of dice and rolls. It also uses a for loop to simulate the dice rolls and a random module to generate random numbers for the dice rolls.

import random

while True:

   # Prompt the user for the number of dice to roll

   num_dice = int(input("Enter the number of dice to roll (1-100): "))

   if num_dice < 1 or num_dice > 100:

       continue

   # Prompt the user for the number of rolls to perform

   num_rolls = int(input("Enter the number of rolls to perform (1-1000): "))

   if num_rolls < 1 or num_rolls > 1000:

       continue

   # Simulate the dice rolls and print the results

   for i in range(num_rolls):

       roll = 0

       for j in range(num_dice):

           roll += random.randint(1, 6)

       print(f"Roll {i+1}: {roll}")

   # Ask the user if they want to roll again

   again = input("Roll again? (Y/N): ").upper()

   if again != "Y":

       break

Explanation:

In this program, we first import the random module to use its randint function to generate random numbers for the dice rolls. We then enter a while loop that will continuously prompt the user for input until they enter a valid number of dice and rolls. Within the while loop, we prompt the user for the number of dice to roll and the number of rolls to perform. If the user enters an invalid number of dice or rolls, we continue back to the beginning of the loop and prompt the user again.

Once the user has entered a valid number of dice and rolls, we use a for loop to simulate the dice rolls. For each roll, we use another for loop to roll the specified number of dice and add up the results. We then print the total for each roll. After all of the rolls have been performed, we ask the user if they want to roll again. If they enter "Y", we continue back to the beginning of the while loop to prompt them for new input. If they enter anything else, we break out of the while loop and end the program.

Overall, this program allows a user to choose to roll between 1 and 100 dice between 1 and 1000 times, and simulates the dice rolls using random numbers and loops.

8 0
1 year ago
java class What is the output of the following JAVA program (Java assumes public if no access modifier is given)? class Test { p
Natasha2012 [34]

Answer:

The answer to the given question is it will produce an "error"  

Explanation:

In the given java program it will produce an error because in java we do not use double quote("""") for message printing. We use a single quote("") for message printing. In the given program if we use a single quote(""). so it will give output that is "dogood:dogood".

The correct program to this question is can be given as:

Program:

public class Test  //define a class test.

{

   public static void main(String[] args)  //define main method

   {

       Test obj = new Test();   //create class object  

       obj.start(); //calling function

   }  

   void start()  //define function start.  

   {

       String stra = "do";   //define variable and assign value.

       String strb = method(stra);  //define variable and pass stra variable in method() function as a parameter.

       System.out.print(":"+stra + strb); //print value.  

   }

   String method(String stra)  //define function method  

   {  

       stra = stra + "good";   //add value

       System.out.print(stra);  //print value of stra

       return"good";  //return value

   }

}

Output:

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kow [346]

Answer:

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Explanation:

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miss Akunina [59]
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An Aggregator blog or website don't write its own content. It aggregates information or content from third-party websites. There are different types of aggregator websites such as a poll aggregator, a review aggregator, and a search aggregator.
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