Programming & Computer Science Answers

Describe what it does and compute what value is returned when the input is the list{1, 2, 3, 4, 5}. (Hint:We’re using 0-based array indexing, so 0 would represent the index of the first element, 1 the second element,etc.)

i←0
while i < n−2 do
if A[i]A[i+1]> A[i+ 2 ]then
returning i
i←i+ 1
return−1

Identify and describe the worst-case input and best case input

i←0
while i < n−2do
if A[i]A[i+1]> A[i+ 2] then
returning i
i←i+ 1
return−1

Explain 3 ways in which through which human being can be infected with computer virus

How to make a script file and a plain text output file (.txt) that contains the test output?

Develop a class of 2 x 2 matrices of double precision floating point variables that has the features listed below.
• A method (function) that returns the determinant of the matrix.
• A method that returns the inverse of the matrix, if it exists.
• Overloading of the assignment operator, allowing us to write code such as A =B; for instances of the class A and B.

Give examples showing how "super" and "this" are useful with inheritance in Java. Include examples of using "super" and "this" both as constructors and as variables.

Give at least three examples that show different features of string slices. Describe the feature illustrated by each example. Invent your own examples. Do not copy them for the textbook or any other source.

. Consider the loop from Section 8.3 of your textbook.

prefixes = 'JKLMNOPQ'
suffix = 'ack'

for letter in prefixes:
print(letter + suffix)

Put this code into a Python script and run it. Notice that it prints the names "Oack" and "Qack".

Modify the program so that it prints "Ouack" and "Quack" but leaves the other names the same.

Include the modified Python code and the output in your submission.

Write a function named test_sqrt that prints a table like the following using a while loop, where "diff" is the absolute value of the difference between my_sqrt(a) and math.sqrt(a).
a = 1 | my_sqrt(a) = 1 | math.sqrt(a) = 1.0 | diff = 0.0
a = 2 | my_sqrt(a) = 1.41421356237 | math.sqrt(a) = 1.41421356237 | diff = 2.22044604925e-16
a = 3 | my_sqrt(a) = 1.73205080757 | math.sqrt(a) = 1.73205080757 | diff = 0.0
a = 4 | my_sqrt(a) = 2.0 | math.sqrt(a) = 2.0 | diff = 0.0
a = 5 | my_sqrt(a) = 2.2360679775 | math.sqrt(a) = 2.2360679775 | diff = 0.0
a = 6 | my_sqrt(a) = 2.44948974278 | math.sqrt(a) = 2.44948974278 | diff = 0.0
a = 7 | my_sqrt(a) = 2.64575131106 | math.sqrt(a) = 2.64575131106 | diff = 0.0
a = 8 | my_sqrt(a) = 2.82842712475 | math.sqrt(a) = 2.82842712475 | diff = 4.4408920985e-16
a = 9 | my_sqrt(a) = 3.0 | math.sqrt(a) = 3.0 | diff = 0.0

Modify your program so that it outputs lines for a values from 1 to 25 instead of just 1 to 9.