String class: The “String” class provides a number of methods that examines for a string inside of a string. The term “substring” refers to a string that denotes another string’s part. The “startsWith” method would determine whether calling string of object begins with a particular substring. The method returns “true” if string begins with specified substring, it returns “false” otherwise. The “endsWith” method would determine whether calling string would end with a specified substring. The method returns “true” if string ends with specified substring, it returns “false” otherwise. The “regionMatches” method would determine whether specified regions for two strings match. The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed. concat method: It returns a copy of calling string object with contents of given string concatenated to it. It performs same operation as “+” operator while used with strings. It returns a string with value of string passed into method, appended to end of string. It appends one string to another string’s end.

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Chapter 9.3, Problem 9.12CP

Program Plan Intro

String class:

The “String” class provides a number of methods that examines for a string inside of a string.

The term “substring” refers to a string that denotes another string’s part.

The “startsWith” method would determine whether calling string of object begins with a particular substring.

The method returns “true” if string begins with specified substring, it returns “false” otherwise.

The “endsWith” method would determine whether calling string would end with a specified substring.

The method returns “true” if string ends with specified substring, it returns “false” otherwise.

The “regionMatches” method would determine whether specified regions for two strings match.

The first argument of this method can be “true” or “false” that indicates whether a case-insensitive comparison could be performed.

concat method:

It returns a copy of calling string object with contents of given string concatenated to it.

It performs same operation as “+” operator while used with strings.

It returns a string with value of string passed into method, appended to end of string.

It appends one string to another string’s end.

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Problem 1 Write a function named initialLetterCount that takes one parameter, wordList - a list of words. Create and return a dictionary in which each initial letter of a word in wordList is a key and the corresponding value is the number of words in wordList that begin with that letter. The keys in the dictionary should be case-sensitive, which means 'a' and 'A' are two different keys. For example, the following is correct output: horton = ['I', 'say', 'what', 'I', 'mean', 'and', 'I', 'mean', 'what', 'I', 'say'] print(initialLetterCount(horton)) {'I': 4, 's': 2, 'w': 2, 'm': 2, 'a': 1} Problem 2 Write a function named initialLetters that takes one parameter, wordList – a list of words. Create and return a dictionary in which each initial letter of a word in wordList is a key and the corresponding value is a list of the words in wordList that begin with that letter. There should be no duplicate words in any value in the dictionary. For example, the following is correct output:…

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