Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
11th Edition
ISBN: 9780134670942
Author: Y. Daniel Liang
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 12, Problem 12.30PE
(Occurrences of each letter) Write a
Enter a filename: Lincoln.txt 
Number of As: 56
Number of Bs: 134
...
Number of Zs: 9
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
(PYTHON) A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names.
Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output.
Ex: If the input of the program is:
ParkPhotos.txt
and the contents of ParkPhotos.txt are:
Acadia2003_photo.jpg AmericanSamoa1989_photo.jpg BlackCanyonoftheGunnison1983_photo.jpg CarlsbadCaverns2010_photo.jpg CraterLake1996_photo.jpg GrandCanyon1996_photo.jpg IndianaDunes1987_photo.jpg LakeClark2009_photo.jpg Redwood1980_photo.jpg…
### Exercise in Python1 ###\n", "\n", "Open the text oneArt.txt, read the text line by line and, at the end, print the number of lines of text that are in the file. Do not count blank lines."
This is the file :
Chapter 12 Solutions
Introduction to Java Programming and Data Structures, Comprehensive Version (11th Edition)
Ch. 12.2 - Prob. 12.2.1CPCh. 12.2 - Prob. 12.2.2CPCh. 12.2 - Prob. 12.2.3CPCh. 12.2 - Prob. 12.2.4CPCh. 12.2 - Prob. 12.2.5CPCh. 12.2 - Show the output of the following code:Ch. 12.3 - Prob. 12.3.1CPCh. 12.3 - Prob. 12.3.2CPCh. 12.4 - Prob. 12.4.1CPCh. 12.4 - Prob. 12.4.2CP
Ch. 12.4 - Prob. 12.4.3CPCh. 12.4 - Prob. 12.4.4CPCh. 12.4 - Prob. 12.4.5CPCh. 12.4 - Prob. 12.4.6CPCh. 12.4 - What is displayed when running the following...Ch. 12.4 - Prob. 12.4.8CPCh. 12.4 - What does the method getMessage() do?Ch. 12.4 - What does the method printStackTrace() do?Ch. 12.4 - Prob. 12.4.11CPCh. 12.4 - Prob. 12.4.12CPCh. 12.5 - Prob. 12.5.1CPCh. 12.6 - Prob. 12.6.1CPCh. 12.7 - Prob. 12.7.1CPCh. 12.8 - Prob. 12.8.1CPCh. 12.9 - Prob. 12.9.1CPCh. 12.9 - Prob. 12.9.2CPCh. 12.10 - What is wrong about creating a File object using...Ch. 12.10 - How do you check whether a file already exists?...Ch. 12.10 - Can you use the File class for I/O? Does creating...Ch. 12.11 - Prob. 12.11.1CPCh. 12.11 - Prob. 12.11.2CPCh. 12.11 - Prob. 12.11.3CPCh. 12.11 - Prob. 12.11.4CPCh. 12.11 - What will happen if you attempt to create a...Ch. 12.11 - Prob. 12.11.6CPCh. 12.11 - Suppose you enter 45 57, 8 789, then press the...Ch. 12.11 - Prob. 12.11.8CPCh. 12.12 - How do you create a Scanner object for reading...Ch. 12.13 - Prob. 12.13.1CPCh. 12.13 - Simplify the code in lines 20-28 as follows: 1....Ch. 12 - Prob. 12.1PECh. 12 - (InputMismatchException) Write a program that...Ch. 12 - (ArrayIndexOutOfBoundsException) Write a program...Ch. 12 - (IllegalArgumentException) Modify the Loan class...Ch. 12 - (IllegalTriangleException) Programming Exercise...Ch. 12 - (NumberFormatException) Listing 6.8 implements the...Ch. 12 - Prob. 12.7PECh. 12 - Prob. 12.8PECh. 12 - Prob. 12.9PECh. 12 - Prob. 12.10PECh. 12 - Prob. 12.11PECh. 12 - (Reformat Java source code) Write a program that...Ch. 12 - (Count characters, words, and lines in a file)...Ch. 12 - (Process scores in a text file) Suppose a text...Ch. 12 - (Write/read data) Write a program to create a file...Ch. 12 - Prob. 12.16PECh. 12 - (Game: hangman) Rewrite Programming Exercise 7.35....Ch. 12 - Prob. 12.18PECh. 12 - (Count words) Write a program that counts the...Ch. 12 - Prob. 12.20PECh. 12 - (Data sorted?) Write a program that reads the...Ch. 12 - Prob. 12.22PECh. 12 - (Process scores in a text file on the Web) Suppose...Ch. 12 - (Create large dataset) Create a data file with...Ch. 12 - (Create a directory) Write a program that prompts...Ch. 12 - Prob. 12.26PECh. 12 - (Replace words) Suppose you have a lot of files in...Ch. 12 - (Rename files) Suppose you have a lot of files in...Ch. 12 - (Rename files) Suppose you have several files in a...Ch. 12 - (Occurrences of each letter) Write a program that...Ch. 12 - (Baby name popularity ranking) The popularity...Ch. 12 - (Ranking summary) Write a program that uses the...
Additional Engineering Textbook Solutions
Find more solutions based on key concepts
The decimal number 17 is equal to the binary number 10010 11000 10001 01001
Digital Fundamentals (11th Edition)
Indentify and correct the errors in each of the following. [Note: There may be more than one error in each piec...
C How to Program (8th Edition)
What is the output produced by the following code?
Java: An Introduction to Problem Solving and Programming (8th Edition)
T F: Changing an objects Text property also changes the objects name.
Starting Out With Visual Basic (7th Edition)
The computer player in Programming Project 10 does not play very well inthe number guessing game, since it only...
Problem Solving with C++ (9th Edition)
Like constructors, destructors cannot have a(n) __________ type.
Starting Out with C++ from Control Structures to Objects (9th Edition)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- PLZZZ PYTHON PROGRAMMING ONLY (PLEASE HELP IF YOU KNOW ABOUT PYTHON AND FILES) Modify your code to print to a file instead of the console. make sure your program performs the following actions: Ask the user how many numbers they would like to enter Then prompt the user to enter a number as many times as they requested. Print the following to a file: How many numbers they entered The sum of the numbers The highest number The average of the numbers Make sure to use a try-except block and include the finally block. Describe the numbers you print. Do not just print numbers to the screen explain what each number represents. (first picture is my code second picture is of a try-except- finally example that ive done as reference )arrow_forward(C Language) A photographer is organizing a photo collection about the national parks in the US and would like to annotate the information about each of the photos into a separate set of files. Write a program that reads the name of a text file containing a list of photo file names. The program then reads the photo file names from the text file, replaces the "_photo.jpg" portion of the file names with "_info.txt", and outputs the modified file names. Assume the unchanged portion of the photo file names contains only letters and numbers, and the text file stores one photo file name per line. If the text file is empty, the program produces no output. Assume also the maximum number of characters of all file names is 100.arrow_forwardWrite code that does the following: opens an output file with the filename number_list.txt, uses a loop to write the numbers 1 through 100 to the file, and then closes the file.arrow_forward
- What happens if the file already exists when you open a file for output?arrow_forwardCase - I: Playing with Digits Write a program which reads input integers from input file which consists a series of numbers where each integer contains only of the digits from 0 to 9. SO 1. Count total digits in the number SO 2. Count & Print the even digits SO 3. Count & Print Odd Digits SO 4. Showing how many times each digit appears in the integer. Specifically if a is an integer is countTotalDigits (a):// Returns total digits in integer // Function to count & print even digitS countEvens (a) ; countodds (a) ; // Function to count & print odd digits countDigits (a) ; // Function to count & print digits with starsarrow_forwardFile Iteration: Introduction A text file is essentially a sequence of lines. Here is a typical coding pattern for processing each line of a file in turn: Open the file for reading. Use a for loop to iterate over the lines of text, executing a block of one or more statements to process each line. Close the file. Finish processing (print, return, etc.) if needed NOTE: You will need to use this pattern, or some variation of it, to solve the remaining coding problems in this assignment. As the following for loop iterates through each line of the file, the loop variable (`line`) represents the current line of the file as a string of characters. myFile = open("someTextFile.txt", "r") for line in myFile: do something on each iteration do a second thing on each iteration etc... myFile.close() PROBLEM: Read a string from standard input using python. Then, iterate over a text file called "cards.txt" and, for each line of the file that starts with the string read from standard input,…arrow_forward
- ۱۰:۱۰ ص Asiacell l.. A chegg.com questions and answers / Question #3: Write... Numbers.txt,... Question: Question #3: Write A C Program That Reads Integer Numbers From A Data File Name... Question #3: Write a C program that reads integer numbers from a data file named numbers.txt, one-by-one. For each number, the program computes and displays the factorial using: a user-defined function named factorial that you should declare and define in the program a user-defined function named factorial_ recursion that you should declare and define in the program The program writes the number and its factorial to a data file Results.txt. Hint: Function factorial has one argument: n (int) and returns n!. It uses for structure to compute n! Function power_ recursion is a recursive function that has one argument: n (int) and returns n!. It computes n! recursively Below are examples of the input and output files 3 3! = 6 5! = 120 7 7! = 5040 10 10! = 3628800 numbers.txt Results.txt #include…arrow_forward<<Write in Java>> - Challenge 7 File encryption is the science of writing the contents of a file in a secret code. Your encryption program should work like a filter, reading the contents of one file, modifying the data into a code, and then writing the coded contents out to a second file. The second file will be a version of the first file, but written in a secret code. Although there are complex encryption techniques, you should come up with a simple one of your own. For example, you could read the first file one character at a time, and add 10 to the character code of each character before it is written to the second file. - Challenge 8 Write a program that decrypts the file produced by the program in Programming Challenge 7. The decryption program should read the contents of the coded file, restore the data to its original state, and write it to another filearrow_forwardENGAGE MINDTAP -Using a Counter-Controlled while Loop in Java Using a Counter-Controlled while Loop ? Summary In this lab, you use a counter-controlled while loop in a Java program provided for you. When completed, the program should print the numbers 0 through 10, along with their values multiplied by 2 and by 10. The data file contains the necessary variable declarations and some output statements. Instructions 1. Ensure the file named Multiply.java is open. 2. Write a counter-controlled while loop that uses the loop control variable to take on the values O through 10. Remember to initialize the loop control variable before the program enters the loop. 3. In the body of the loop, multiply the value of the loop control variable by 2 and by 10. Remember to change the value of the loop control variable in the body of the loop. 4. Execute the program by clicking Run. Record the output of this program. Grading When you have completed your program, click the Submit button to record your…arrow_forward
- Q1) Write a program in a script file that finds the smallest odd integer that is divisible by 11 and whose square root is greater than 132. Use a loop in the program. The loop should start from 1 and stop when the number is found. The program prints the message "The required number is:" and then prints the number.arrow_forwardMake the following modifications for the solution above: name the output/input file "myRandomNumbers.txt" use a loop to output 17 random numbers to the file after creating the file, close it open the file for input and read the contents and then total the numbers in the file determine the average of the numbers in the file determine the highest and lowest numbers in the file DO NOT USE PYTHON BUILTIN FUNCTIONS TO CALCULATE THE AVERAGE OR THE HIGHEST AND LOWEST NUMBERS an expected number of modules/functions would be in the 5-8 range Display your results: the numbers generated on a single horizontal line the calculated total and average the highest and lowest number in the file Be sure to use clear prompts/labeling for input and output.arrow_forward*Code in Python A file concordance tracks the unique words in a file and their frequencies. Write a program that displays a concordance for a file. The program should output the unique words and their frequencies in alphabetical order. Variations are to track sequences of two words and their frequencies, or n words and their frequencies. Below is an example file along with the program input and output: example.txt I AM SAM I AM SAM SAM I AM Enter the input file name: example.txt AM 3 I 3 SAM 3 The program should handle input files of varying length (lines).arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Database System ConceptsComputer ScienceISBN:9780078022159Author:Abraham Silberschatz Professor, Henry F. Korth, S. SudarshanPublisher:McGraw-Hill Education
Starting Out with Python (4th Edition)Computer ScienceISBN:9780134444321Author:Tony GaddisPublisher:PEARSON
Digital Fundamentals (11th Edition)Computer ScienceISBN:9780132737968Author:Thomas L. FloydPublisher:PEARSON
C How to Program (8th Edition)Computer ScienceISBN:9780133976892Author:Paul J. Deitel, Harvey DeitelPublisher:PEARSON
Database Systems: Design, Implementation, & Manag...Computer ScienceISBN:9781337627900Author:Carlos Coronel, Steven MorrisPublisher:Cengage Learning
Programmable Logic ControllersComputer ScienceISBN:9780073373843Author:Frank D. PetruzellaPublisher:McGraw-Hill Education
Database System Concepts
Computer Science
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:9780134444321
Author:Tony Gaddis
Publisher:PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:9780132737968
Author:Thomas L. Floyd
Publisher:PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:9780133976892
Author:Paul J. Deitel, Harvey Deitel
Publisher:PEARSON
Database Systems: Design, Implementation, & Manag...
Computer Science
ISBN:9781337627900
Author:Carlos Coronel, Steven Morris
Publisher:Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:9780073373843
Author:Frank D. Petruzella
Publisher:McGraw-Hill Education
C++ Programming Tutorial 36 - Intro to Loops; Author: Caleb Curry;https://www.youtube.com/watch?v=M3o7Y0juEP0;License: Standard YouTube License, CC-BY