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iren2701 [21]
4 years ago
13

If every element of a list must beprocessed, a(n) __________is more efficient than a(n)______.

Computers and Technology
1 answer:
statuscvo [17]4 years ago
6 0

Answer:

B - array; hash

Explanation:

Arrays store elements of the same data type in a list. Every element in the array is assigned a unique integer (starting at 0). You are able to access/process an element by using its assigned integer. Hashes are similar in the fact that they also store data. The difference is that each element is assigned an object type (instead of an integer), making it a collection of key pairs, as such you would typically not use this to process elements efficiently.

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Using your favorite imperative language, give an example of each of the following. (a) A lexical error, detected by the scanner
Travka [436]

Explanation:

a. int foo+; (foo+ is an invalid identifier because + is not a valid char in identifiers)

b. foo int; (Syntax error is any error where the syntax is invalid - either due to misplacement of words, bad spelling, missing semicolons etc.)

c. Static semantic error are logical errors. for e.g passing float as index of an array - arr[1.5] should be a SSE.

d. I think exceptions like NullReferenceException might be an example of DME. Not completely sure but in covariant returns that raise an exception at compile time (in some languages) might also come in this category. Also, passing the wrong type of object in another object (like passing a Cat in a Person object at runtime might qualify for DME.) Simplest example would be trying to access an index that is out of bounds of the array.

8 0
3 years ago
What type of natural disaster stuck haiti in 2010 and killed more than 200,000 people
Aleonysh [2.5K]

Answer:

Earthquake

Explanation:

Around 3 million people were affected by this disaster and it was the most devastating natural disaster ever experienced in Haiti. Roughly 250,000 lives were lost and 300,000 people were injured.

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3 years ago
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_______ data would be useful for creating a weekly status report for your manager that should reflect changes in real time.     
elena55 [62]
D. Field data because that it a report of what happened over the week that a manager can reflect on for possible changes.
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3 years ago
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The following program is run. Then the user clicks the "bottomButton" TWO TIMES. What will be displayed in the console?
IrinaK [193]

Answer:

A. aaa

bbb

ccc

ccc

ddd

B. bbb

ddd

ccc

ccc

C. bbb

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D. bbb

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8 0
3 years ago
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Write a Python 3 program to read from a .csv file containing rates from power companies. Your program should determine the avera
aliya0001 [1]

Answer:

In python:

file = open("rates.csv", "r")

ratecount = 0

ratesum = 0

mylist = []

rates = file.readlines()

for nums in rates:

     num = nums.rstrip('\n')

     mylist.append(int(num))

     for i in num:

           ratesum= ratesum + int(i)

           ratecount = ratecount + 1

print("Maximum Rate: "+str(max(mylist)))

print("Minimum Rate: "+str(min(mylist)))

print("Average Rate: "+str(ratesum/ratecount))

Explanation:

This opens the csv file

file = open("rates.csv", "r")

This initializes the number of rates in the file

ratecount = 0

This initializes the sum of the rates

ratesum = 0

This initializes an empty list

mylist = []

This reads the rates into lines

rates = file.readlines()

This iterates through the rates (as a string)

for nums in rates:

This removes the newline character \n in the rates

     num = nums.rstrip('\n')

This appends the rates (as an integer) to the empty list

     mylist.append(int(num))

The following counts the rates in the file and also sum them up

<em>      for i in num: </em>

<em>            ratesum= ratesum + int(i) </em>

<em>            ratecount = ratecount + 1 </em>

This prints the maximum of the rates

print("Maximum Rate: "+str(max(mylist)))

This prints the minimum of the rates

print("Minimum Rate: "+str(min(mylist)))

This calculates and prints the average rate

print("Average Rate: "+str(ratesum/ratecount))

6 0
3 years ago
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