Answer:
<em>(c) The method call, which worked correctly before the change, will now cause a run-time error because it attempts to access a character at index 7 in a string whose last element is at index 6.</em>
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Explanation:
Given
printAllCharacters method and printAllCharacters("ABCDEFG");
Required
What happens when x < str.length() is changed to x <= str.length()
First, we need to understand that str.length() gets the length of string "ABCDEFG"
There are 7 characters in "ABCDEFG".
So: str.length() = 7
The first character is at index 0 and the last is at index 6
Next, we need to simplify the loop:
for (int x = 0; x< str.length(); x++) means for (int x = 0; x< 7; x++)
The above loop will iterate from the character at the 0 index to the character at the 6th index
while
for (int x = 0; x<=str.length(); x++) means for (int x = 0; x<=7; x++)
The above loop will iterate from the character at the 0 index to the character at the 7th index
Because there is no character at the 7th index, the loop will return an error
Hence: (c) is correct
Answer:
b
Explanation:
First, we need to initialize the classifier.
Then, we are required to train the classifier.
The next step is to predict the target.
And finally, we need to evaluate the classifier model.
You will find different algorithms for solving the classification problem. Some of them are like decision tree classification etc.
However, you need to know how these classifier works. And its explained before:
You need to initialize the classifier at first.
All kinds of classifiers in the scikit-learn make use of the method fit(x,y) for fitting the model or the training for the given training set in level y.
The predict(x) returns the y which is the predicted label.And this is prediction.
For evaluating the classifier model- the score(x,y) gives back the certain score for a mentioned test data x as well as the test label y.
Answer:
- import random
-
- states = {
- "Alabama": "Montgomery",
- "California": "Sacramento",
- "Florida": "Tallahassee",
- "Hawaii": "Honolulu",
- "Indiana": "Indianapolis",
- "Michigan": "Lansing",
- "New York": "Albany",
- "Texas" : "Austin",
- "Utah" : "Salt Lake City",
- "Wisconsin": "Madison"
- }
-
- correct = 0
- wrong = 0
- round = 1
- while(round <= 5):
- current_state = random.choice(list(states))
- answer = input("What is the capital of " + current_state + ": ")
-
- if(answer == states[current_state]):
- correct += 1
- else:
- wrong += 1
-
- round += 1
-
- print("Correct answer: " + str(correct))
- print("Wrong answer: " + str(wrong))
Explanation:
The solution code is written in Python 3.
Line 3 -14
Create a dictionary of US States with capital as each of their corresponding value. Please note only ten sample states are chosen here.
Line 16 - 18
Create variables to track the number of correct and inaccurate response and also round counter.
Line 19 - 28
Set the while condition to enable user to play the quiz for five questions and use random.choice to randomly pick a state from the dictionary and prompt user to input the capital of selected stated.
If the answer matched with the capital value of the selected state, increment the correct counter by one. Otherwise the wrong counter will be incremented by one. Increment the round counter by one before proceed to next round.
Line 30 - 31
Print the number of correct responses and wrong responses.
Answer:
The answer is "Dynamic".
Explanation:
The dynamic allocation of the IP address describes the difference from once in a while, unlike with a static IP address.
- In this many residential networks are work on different IP addresses, which requires, and provides clarification.
- It is also known as an economical, Provides by "ISP" to allocate a dynamic IP address to certain subscribers.
Answer:
The answer is "Using the DoD 5220.22-M method and Degauss media with a magnet".
Explanation:
The "DoD Standard" is a term used during the data sanitizing industry and refers to DoD 5220.22-M. The simplest ways are being used to help eliminate the previously stored data, by deleting hard disc storage facilities with the same data wherever that used a sequence of all zeros.
The sparging eliminates statistics to entirely delete the gravitational flux from electronic media. Hard drives as well as other data storage devices, for example, computer tapes, retain magnetic data. It could no longer be seen as storage after a disk is degaussed.
