• get_tokens_from_equation(line): Takes one string as input that contains any combination of digitsfrom 0-9 and the following mathematical symbols:+ - x / = ^ (OThe string does not have to correspond to a valid mathematical equation. For example, '4-3=0'and '4xx5=(8' could be valid inputs to this function.The function will translate the string into a list of tokens. A token is a single non-negative number(of any length) or a single mathematical symbol. Numbers should be added to the list as integers,and symbols as strings. The tokens in the list should be in the same order as the numbers/symbolsappear in the string.For example, given the string '52-2=50', the function should return the list [52, '-',50].>>> get_tokens_from_equation('4=3')[4, '=', 3]>>> get_tokens_from_equation('6-5=15^4/2')[6, '-', 5, '=', 15, '^', 4, '/', 2]>>> get_tokens_from_equation('288/24x6=18x13x8')[288, '/', 24, 'x', 6, '=', 18, 'x', 13, 'x', 8]

1) Below is program to define a function get_token_from_equation and test with line inputs It…

Answered: get tokens_from_equation(line): Takes…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Complete the below function which takes a list of distinct positive integers and a target positive integer value, and then returns a list of the pairs of integers where each pair sums up to the target value. Each pair is represented as a tuple. For example, pairsum([3,2,6,1,5,4], 7) should return[(1,6), (2,5), (3,4)]If there are no pairs matching the target value, then you should return an empty list. IMPORTANT: the first integer in a tuple must be always smaller than the second integer. So, (5,3) is wrong and (3,5) is correct, and the resulting list must be in ascending order of first element in each tuple.
def reverse_sentence(s: str) -> str:"""This means that in the string 'ATest string!', there are in fact only twowords: 'A' and 'Test string!'. Again, keep in mind that words start with acapital letter and continue until the next capital letter or the end of thestring, which is why we consider 'Test string!' as one word.This function will reverse each word found in the string, and return a newstring with the reversed words, as illustrated in the doctest below.>>> reverse_sentence('ATest string!')'A!gnirts tseT'""" please don't use any list function or import just basic if and loop function and also please do this code in python
def sum_string(string: str) -> int:"""Given a string <string>, return the sum of this string, as computed by theformula given below: To compute the sum of a string as defined by this function, we add everyodd positioned digit, and subtract every even positioned digit. For example,if we had an input of "54321", we would add 5, subtract 4, add 3, subtract2, and add 1, bringing us to a total of 3. In other words, you would add thefirst digit, subtract the second digit, and keep alternating until you reachthe end of the string. If the string is empty, then the sum is 0. Note: since we give the input as a string, you will have to do some typeconversion in order to solve this problem. Precondition: <string> will only contain the characters 0-9."""pass " please do this on python and don't use any import functions"
def get_legal_word_scores(letters, dictionary, value_dict): """ Given a str of letters that we can use, and a dictionary that contains all legal words allowed in scrabble game, and a value_dict that maps each letter to a score, Returns a dictionary that contains all possible scores earned by any legal word as the key, and for each score, the score/key maps to a list of words that are from the dictionary made from the given letters and computes to that score. The list should be in alphabetical order. """
Write a function that takes two arguments: stock and ingr (short for ingredients) and returns the missing ingredients in stock. stock is a dictionary containing (key,value) pairs in the form of ("potato", 5).The key is the name of an ingredient, and the vlaue is its existingamount. ingr is a list of tuples, where each tuple represents the requiredamount of an ingredient. For example, ("cheese", 3) means we need 3 units of cheese for this recipe. Your function checks whether we have enough of each itemin the stock. If an item is missing or not enough then your function returns the missing amount within a list of all such items. If all items are in stock, then you return an empty list. For example: stock = {"salt":100, "sugar":100, "flour":50, "apple":3, "cream":10}ingr = [("sugar",50), ("flour", 120), ("apple",5)] checkStock(stock, ingr) should return [("flour",70), ("apple",2)] which means we need 70 more units of flour and 2 more apples for this recipe.Note that it is possible for an…
Write a function that takes two arguments: stock and ingr (short for ingredients) and returns the missing ingredients in stock. stock is a dictionary containing (key,value) pairs in the form of ("potato", 5).The key is the name of an ingredient, and the vlaue is its existingamount. ingr is a list of tuples, where each tuple represents the requiredamount of an ingredient. For example, ("cheese", 3) means we need 3 units of cheese for this recipe. Your function checks whether we have enough of each itemin the stock. If an item is missing or not enough then your function returns the missing amount within a list of all such items. If all items are in stock, then you return an empty list. For example: stock = {"salt":100, "sugar":100, "flour":50, "apple":3, "cream":10}ingr = [("sugar",50), ("flour", 120), ("apple",5)] checkStock(stock, ingr) should return [("flour",70), ("apple",2)] which means we need 70 more units of flour and 2 more apples for this recipe.Note that it is possible for an…
Write a function that takes two arguments: stock and ingr (short for ingredients) and returns the missing ingredients in stock. stock is a dictionary containing (key,value) pairs in the form of ("potato", 5). The key is the name of an ingredient, and the vlaue is its existing amount. ingr is a list of tuples, where each tuple represents the required amount of an ingredient. For example, ("cheese", 3) means we need 3 units of cheese for this recipe. Your function checks whether we have enough of each item in the stock. If an item is missing or not enough then your function returns the missing amount within a list of all such items. If all items are in stock, then you return an empty list. For example: stock = {"salt":100, "sugar":100, "flour":50, "apple":3, "cream":10} ingr = [("sugar",50), ("flour", 120), ("apple",5)] checkStock(stock, ingr) should return [("flour",70), ("apple",2)] which means we need 70 more units of flour and 2 more apples for this recipe. Note that it…
Write a function MedianWithoutHL(ScoreList) that takes an unsorted list of n numbers as a parameter, discards the highest and the lowest numbers and return the median. You can assume the number of items in the list is between 0.0 and 9.9. To find the median from a list of items, you have tosort the list and find out the value of the item in the middle.Note: If the list has an odd number of items, the median is the value of the middle item. If the list has an even number of items, the median is the average of the two middle items.Sample Run #1:scoreList1 = [9.0, 9.0, 7.5, 8.0, 9.5, 6.5, 5.0, 7.0, 7.5, 8.5]print("The Original ScoreList: ", scoreList1)print(MedianWithoutHL(scoreList1))Output of Sample Run #1:The Original ScoreList: [9.0, 9.0, 7.5, 8.0, 9.5, 6.5, 5.0, 7.0, 7.5, 8.5]The List after sorting: [5.0, 6.5, 7.0, 7.5, 7.5, 8.0, 8.5, 9.0, 9.0, 9.5]Without the High & Low: [6.5, 7.0, 7.5, 7.5, 8.0, 8.5, 9.0, 9.0]7.75
Suppose we use a Python dictionary to store gradebooks of multiple courses. gradebooks = {'Course 1': [['Troy', 92], ['Alice', 95]], 'Course 2': [['James', 89], ['Charles', 100], ['Bryn', 59]], 'Course 3': [['Jack', 74], ['Karren', 97], ['Astha', 92], ['Nancy', 96]]} Use the builtin sorted function with appropriate programming constructs (e.g., lambdas, comprehensions, , etc.) to complete the following tasks: Write code to create a new list named gradebooks_a, with students of each course being sorted by score in descending order. The expected result is: [[['Alice', 95], ['Troy', 92]], [['Charles', 100], ['James', 89], ['Bryn', 59]], [['Karren', 97], ['Nancy', 96], ['Astha', 92], ['Jack', 74]]]
Modify LiveExample 12.12 EvaluateExpression.cpp to add operators ^ for exponent and % for modulus. For example, 3 ^ 2 is 9 and 3 % 2 is 1. The ^ operator has the highest precedence and the % operator has the same precedence as the * and / operators. For simplicity, assume the expression has at most one ^ operator. Sample Run: Enter an expression: (5 * 2 ^ 3 + 2 * 3 % 2) * 4 (5 * 2 ^ 3 + 2 * 3 % 2) * 4 = 160 Code posted below, c++ please! #include <vector>#include <iostream>#include <cmath>using namespace std; #ifndef STACK_H#define STACK_H template<typename T>class Stack{public: Stack(); bool empty() const; T peek() const; void push(T value); T pop(); int getSize() const; private: vector<T> elements;}; template<typename T>Stack<T>::Stack(){} template<typename T>bool Stack<T>::empty() const{ return elements.size() == 0;} template<typename T>T Stack<T>::peek() const{ return…
PYTHON!!!! Complete the below function which takes a list of distinct positive integers and a target positive integer value, and then returns a list of the pairs of integers where each pair sums up to the target value. Each pair is represented as a tuple. For example, pairsum([3,2,6,1,5,4], 7) should return [(1,6), (2,5), (3,4)] If there are no pairs matching the target value, then you should return an empty list. IMPORTANT: the first integer in a tuple must be always smaller than the second integer. So, (5,3) is wrong and (3,5) is correct, and the resulting list must be in ascending order of first element in each tuple. """ def pairsum(list1, target):
Write a function that when given a URL as a string, parses out just the domain name and returns it as a string. Examples:domain_name("http://github.com/SaadBenn") == "github" domain_name("http://www.zombie-bites.com") == "zombie-bites"domain_name("https://www.cnet.com") == "cnet"Note: The idea is not to use any built-in libraries such as re (regular expression) or urlparse except .split() built-in function""" # Non pythonic waydef domain_name_1(url): #grab only the non http(s) part full_domain_name = url.split('//')[-1] #grab the actual one depending on the len of the list actual_domain = full_domain_name.split('.') # case when www is in the url if (len(actual_domain) > 2): return actual_domain[1] # case when www is not in the url return actual_domain[0] # pythonic one linerdef domain_name_2(url):

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