Computer Systems: A Programmer's Perspective (3rd Edition)
3rd Edition
ISBN: 9780134092669
Author: Bryant, Randal E. Bryant, David R. O'Hallaron, David R., Randal E.; O'Hallaron, Bryant/O'hallaron
Publisher: PEARSON
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Chapter 9.8, Problem 9.5PP
Practice Problem 9.5 (solution page 882)
Write a C
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[PYTHON]
For this programming assignment I want you to write a program that calculates bigram frequencies for a set of text.
Your program should assess the text and calculate the frequency of word pairs that occur throughout the entire file.
Your program should ignore case (meaning "the dog" and "The dog" should count as the same phrase).
Your program should write out the frequency count for each uniquely occurring bigram to a file with the count and the bigram separated by a tab.
As an example, bigram frequencies for the following sentence are:
Sentence: The dog and the cat do not get along because the dog is mean to the cat and the cat is aloof to the dog.
Bigrams:
the cat
3
the dog
3
and the
2
to the
2
along because
1
aloof to
1
because the
1
cat and
1
cat do
1
cat is
1
do not
1
dog and
1
dog is
1
get along
1
is aloof
1
is mean
1
mean to
1
not get
1
[no. 19] When would you use a while loop?
a. when you want some code to continue running as long as some condition is true
b. when you want to run code in one file while code in another file is also running
c. when you want to minimize the use of strings in your code
d. when you need to run two or more chunks of code at once within the same file
Problem 2 (Cipher module)• Create a Python file named cipher_module.py with functions to encode and decodestring inputs using the basic Caesar cipher (see here for more informationhttps://en.wikipedia.org/wiki/Caesar_cipher). This cipher is a basic encryptiontechnique that supports encoding and decoding operations on strings.• The encoding operation replaces each character in a string with another charactersome fixed number (shift) of positions down the ASCII table. The string can beencoded using any characters on the ASCII table and no need to use the circular list(where ‘Z’ is followed by ‘A’) image shown below. Your module must have a functionnamed encode() that takes a string and an integer shift (can be positive or negative)as parameters and returns the encoded string using the shift value. This module must
Page 3 of 4also have a second function name decode() that takes an encoded string and aninteger shift as parameters and returns the decoded string. The decoding…
Chapter 9 Solutions
Computer Systems: A Programmer's Perspective (3rd Edition)
Ch. 9.2 - Prob. 9.1PPCh. 9.3 - Prob. 9.2PPCh. 9.6 - Prob. 9.3PPCh. 9.6 - Prob. 9.4PPCh. 9.8 - Practice Problem 9.5 (solution page 882) Write a C...Ch. 9.9 - Prob. 9.6PPCh. 9.9 - Prob. 9.7PPCh. 9.9 - Prob. 9.8PPCh. 9.9 - Prob. 9.9PPCh. 9.9 - Prob. 9.10PP
Ch. 9 - Prob. 9.11HWCh. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Repeat Problem 9.11 for the following address....Ch. 9 - Given an input file hello.txt that consists of the...Ch. 9 - Determine the block sizes and header values that...Ch. 9 - Prob. 9.16HWCh. 9 - Prob. 9.17HWCh. 9 - Prob. 9.18HWCh. 9 - Prob. 9.19HWCh. 9 - Write your own version of malloc and free, and...
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