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maw [93]
3 years ago
11

To create a program in Scratch, you need to think systematically about the order of steps. This is known as

Computers and Technology
1 answer:
Katarina [22]3 years ago
4 0
Sequence. I took the same test like 5 minutes ago and got a perfect score
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A palindrome is a string that reads the same from left to right and from right to left. Design an algorithm to find the minimum
stepladder [879]

Answer:

Explanation:

The following code is written in Python. It is a recursive function that tests the first and last character of the word and keeps checking to see if each change would create the palindrome. Finally, printing out the minimum number needed to create the palindrome.

import sys

def numOfSwitches(word, start, end):

   if (start > end):

       return sys.maxsize

   if (start == end):

       return 0

   if (start == end - 1):

       if (word[start] == word[end]):

           return 0

       else:

           return 1

   if (word[start] == word[end]):

       return numOfSwitches(word, start + 1, end - 1)

   else:

       return (min(numOfSwitches(word, start, end - 1),

                   numOfSwitches(word, start + 1, end)) + 1)

word = input("Enter a Word: ")

start = 0

end = len(word)-1

print("Number of switches required for palindrome: " + str(numOfSwitches(word, start, end)))

3 0
2 years ago
The seven basic internal components found in a computer tower
Minchanka [31]
Motherboard, CPU, RAM, PSU, HDDs, GPU, and a Sound card.
8 0
3 years ago
EASY AND I GIVE BRAINLIEST!!! What is a good jeopardy question about operating systems?
madam [21]

 ______ is used in operating system to separate mechanism from policy
<span><span>A. Single level implementation</span><span>B. Two level implementation</span><span>C. Multi level implementation</span><span>D. None</span></span>
3 0
3 years ago
100 POINTS!!!!!!
Veronika [31]

Answer:

The fundamental limitation of symmetric (secret key) encryption is ... how do two parties (we may as well assume they are Alice and Bob) agree on a key? In order for Alice and Bob to communicate securely they need to agree on a secret key. In order to agree on a secret key, they need to be able to communicate securely. In terms of the pillars of IA, To provide CONFIDENTIALITY, a secret key must first be shared. But to initially share the key, you must already have CONFIDENTIALITY. It's a whole chicken-and-egg problem.

This problem is especially common in the digital age. We constantly end up at websites with whom we decide we want to communicate securely (like online stores) but with whom we there is not really an option to communicate "offline" to agree on some kind of secret key. In fact, it's usually all done automatically browser-to-server, and for the browser and server there's not even a concept of "offline" — they only exist online. We need to be able to establish secure communications over an insecure channel. Symmetric (secret key) encryption can't do this for us.

Asymmetric (Public-key) Encryption

Yet one more reason I'm barred from speaking at crypto conferences.

xkcd.com/177/In asymmetric (public key) cryptography, both communicating parties (i.e. both Alice and Bob) have two keys of their own — just to be clear, that's four keys total. Each party has their own public key, which they share with the world, and their own private key which they ... well, which they keep private, of course but, more than that, which they keep as a closely guarded secret. The magic of public key cryptography is that a message encrypted with the public key can only be decrypted with the private key. Alice will encrypt her message with Bob's public key, and even though Eve knows she used Bob's public key, and even though Eve knows Bob's public key herself, she is unable to decrypt the message. Only Bob, using his secret key, can decrypt the message ... assuming he's kept it secret, of course.

Explanation:

3 0
2 years ago
Four workers take an extra half-hour for lunch, at a cost of $14/ hour
Usimov [2.4K]

Answer:

whats the rest ?

Explanation:

whats the rest ?

8 0
3 years ago
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