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Chapter: 12 / Q: 28
(Rename files) Suppose you have a lot of files in a directory named Exercisei_j, where i and j are digits. Write a program that pads a 0 before i if i is a single digit. For example, a file named Exercise2_1 in a directory will be renamed to Exercise02_1
Chapter: 12 / Q: 29
(Rename files) Suppose you have a lot of files in a directory named Exercisei_j, where i and j are digits. Write a program that pads a 0 before j if j is a single digit
Chapter: 12 / Q: 30
(Occurrences of each letter) Write a program that prompts the user to enter a file name and displays the occurrences of each letter in the file. Letters are case-insensitive
Chapter: 12 / Q: 31
(Baby name popularity ranking) The popularity ranking of baby names from years 2001 to 2010 is downloaded from www.ssa.gov/oact/babynames and stored in files named babynameranking2001.txt, babynameranking2002.txt, . . . ,
Chapter: 12 / Q: 32
(Ranking summary) Write a program that uses the files described in Programming Exercise 12.31 and displays a ranking summary table for the first five girl’s and boy’s names as follows:
Chapter: 12 / Q: 33
(Search Web) Modify Listing 12.18 WebCrawler.java to search for the word Computer Programming starting from the URL http://cs.armstrong.edu/liang. Your program terminates once the word is found. Display the URL for the page that contains the word
Chapter: 13 / Q: 1
(Triangle class) Design a new Triangle class that extends the abstract GeometricObject class. Draw the UML diagram for the classes Triangle and GeometricObject and then implement the Triangle class
Chapter: 13 / Q: 2
(Shuffle ArrayList) Write the following method that shuffles an ArrayList of numbers:
Chapter: 13 / Q: 3
(Sort ArrayList) Write the following method that sorts an ArrayList of numbers
Chapter: 13 / Q: 4
(Display calendars) Rewrite the PrintCalendar class in Listing 6.12 to display a calendar for a specified month using the Calendar and GregorianCalendar classes. Your program receives the month and year from the command line. For example:
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