Identify the least frequent letter in the above text


Problem 1.

Given a string variable string s; initialize the value of s by receiving a paragraph in English text from the standard input cin. You could assume that this paragraph consists of no more than 100 tokens. Again, tokens are sequences of contiguous characters separated by any of the user-specified delimiters (e.g., white spaces and Comma).

Please implement a C++ program to recognize each unique token in s and its frequency (i.e., the number of times this token appears in s); Specifically, you are required to include the following elements in your program:

1. Identify the least frequent letter in the above text. Implement a separate function void getLeastFreqLetter() for this task. The main() function then calls this function to find out the least frequent letter and its frequency.

2. Declare a struct TokenFreq that consists of two data members: (1) string token; and (2) int freq; Obviously, an object of this struct will be used to store a specific token and its frequency.

Remember to declare this struct at the beginning of your program and outside any function. A good place would be right after the "using namespace std;" line. This way, your functions will be able to use this struct to declare variables.

3. Implement the function vector getTokenFreq( string& s); Given the input string s, this function identifies all the unique tokens in s and the frequency of each token. It stores all the identified (token, freq) pairs in a vector and returns this vector to the calling function. In this homework, these tokens are case sensitive. For example, "Hello" and "hello" are considered to be two different tokens.

Problem 2:

Implement another C++ program to sort a list of integers using the selection sort algorithm. You are required to use an integer vector to store the input numbers typed from the keyboard.

The declaration of this vector will be in main(). You'll need to implement a separate function readData() to read numbers from the keyboard; implement a separate function called selectionSort(), which will be called by the main() function to sort the afore-mentioned vector; implement another function printVector() to print out the content of the vector.

This function will be called by main() right after calling readData()and selectionSort(), respectively, to print out the vector content before and after being sorted. Assume that you type the following input string on your keyboard and store it in string s: ?"And no, I'm not a walking C++ dictionary.

I do not keep every technical detail in my head at all times. If I did that, I would be a much poorer programmer. I do keep the main points straight in my head most of the time, and I do know where to find the details when I need them. by Bjarne Stroustrup" After having called the getTokenFreq() function, you should identify the following list of (token, freq) pairs and store them in a vector (note that the order might be different from yours): { 'no,': 1, 'and': 1, 'walking': 1, 'be': 1, 'dictionary.': 1, 'Bjarne': 1, 'all': 1, 'need': 1, 'Stroustrup': 1, 'at': 1, 'times.': 1, 'in': 2, 'programmer.': 1, 'where': 1, 'find': 1, 'that,': 1, 'would': 1, 'when': 1, 'detail': 1, 'time,': 1, 'to': 1, 'much': 1, 'details': 1, 'main': 1, 'do': 3, 'head': 2, 'I': 6, 'C++': 1, 'poorer': 1, 'most': 1, 'every': 1, 'a': 2, 'not': 2, "I'm": 1, 'by': 1, 'And': 1, 'did': 1, 'of': 1, 'straight': 1, 'know': 1, 'keep': 2, 'technical': 1, 'points': 1, 'them.': 1, 'the': 3, 'my': 2, 'If': 1}

Please don't use hashmap and no library string token function.

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Data Structure & Algorithms: Identify the least frequent letter in the above text
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