def add_key_values(x: str)-> dict[str, int]: "Return a dictionary where the keys are the distinct characters appearing in x and the values are how many times they appear."" Starting from the top and considering each testcase in turn, please mark the 6 options that add nothing to what was covered by the previous tests. x= "", return: {} x= "a", return {"a":1} x="ab", return {"a": 1, "b":1} Ox="aab", return {"a": 2, "b":1} x= "1233", return:{"1". 1. 42"- 1. 43"-23

def add_key_values(x: str)-> dict[str, int]: "Return a dictionary where the keys are the distinct characters appearing in x and the values are how many times they appear."" Starting from the top and considering each testcase in turn, please mark the 6 options that add nothing to what was covered by the previous tests. x= "", return: {} x= "a", return {"a":1} x="ab", return {"a": 1, "b":1} Ox="aab", return {"a": 2, "b":1} x= "1233", return:{"1". 1. 42"- 1. 43"-23

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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get_top_regions() that takes three input parameters; the 2-D list (similar to the database), the dictionary that stores information of all regions, and a non-zero positive integer x. This function returns a new dictionary that contains the information of top-x regions in terms of the total number of hospitalization cases recorded in these regions. That means these top-x regions have the largest numbers of hospitalization cases. Each {key:value} pair in this resulting dictionary stores the name of a top region as the key and the value is the total number of hospitalization cases reported in this region. The result does not need to be sorted, the regions of the resulting dictionary can appear in any order as long as the top-x regions have been identified correctly. If the value of x is less than 1, or more than the total number of unique regions, your function should print a message informing the user and return an empty dictionary. See sample outputs below. >>> topx_regions…
This program will store roster and rating information for a football team. Coaches rate players during tryouts to ensure a balanced team. (1) Prompt the user to input five pairs of numbers: A player's jersey number (0 - 99) and the player's rating (1 - 9). Store the jersey numbers and the ratings in a dictionary. Output the dictionary's elements with the jersey numbers in ascending order (i.e., output the roster from smallest to largest jersey number). Hint: Dictionary keys can be stored in a sorted list. (3 pts)Ex: Enter player 1's jersey number: 84 Enter player 1's rating: 7 Enter player 2's jersey number: 23 Enter player 2's rating: 4 Enter player 3's jersey number: 4 Enter player 3's rating: 5 Enter player 4's jersey number: 30 Enter player 4's rating: 2 Enter player 5's jersey number: 66 Enter player 5's rating: 9 ROSTER Jersey number: 4, Rating: 5 Jersey number: 23, Rating: 4 Jersey number 30, Rating: 2 ... (2) Implement a menu of options for a user to modify the roster. Each…
Write code that prints out the keys that have a value less than 3 in the following dictionary: d= {'a':5, 'is':3, 'this':2, 'program':1}
This is question 5 on the same chapter 9
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Please in python, MUST use dictionaries This program will store roster and rating information for a soccer team. Coaches rate players during tryouts to ensure a balanced team. (1) Prompt the user to input five pairs of numbers: A player's jersey number (0 - 99) and the player's rating (1 - 9). Store the jersey numbers and the ratings in a dictionary. Output the dictionary's elements with the jersey numbers in ascending order (i.e., output the roster from smallest to largest jersey number). Hint: Dictionary keys can be stored in a sorted list. (3 pts)Ex: Enter player 1's jersey number: 84 Enter player 1's rating: 7 Enter player 2's jersey number: 23 Enter player 2's rating: 4 Enter player 3's jersey number: 4 Enter player 3's rating: 5 Enter player 4's jersey number: 30 Enter player 4's rating: 2 Enter player 5's jersey number: 66 Enter player 5's rating: 9 ROSTER Jersey number: 4, Rating: 5 Jersey number: 23, Rating: 4 Jersey number 30, Rating: 2 ... (2) Implement a menu of options for…
What will be displayed after the following code executes? (Note: the order of the display of entries in a dictionary are not in a specific order.)
A Dictionary object’s Remove method returns an integer indicating the number of elements that were removed. Question 48 options: True False
Displays a rank in the defined dictionary.a) Create a dictionary, rank = {1:"Freshman", 2:"Sophmore", 3:"Junior", 4:"Senior"}b) Request a user input for a number of years.c) Print the value of the matching key in the dictionary.d) Print the error message if input is invalid. In actual code and psuedocode. Using python programming language.
Write a function called count_duplicates that takes a dictionary as an argument and returns the number of values that appear two or more times.
This code is a part of a C dictionary. Please write the code for the below requirements. dict_get Next, you will implement: char* dict_get (const dict_t* dict, const char* key); This function goes through the list given by dict. If you use the above structure, this means starting at el = dict->head and checking each time whether the key at el is key; if it is not, we set el = el->next, until either key is found, or we reach el == NULL. To compare key with el->key, we need to compare one by one each character in key with those in el->key. Remember that strings in C are just pointers (memory addresses) to the first character in the string, so comparing el->key == key will not do what you want. So how do you even get the length of a string s? You would start at memory location s and advance as long as the byte at s (i.e. *s) is not the end-of-string marker (\0, the NULL character). This can get a bit messy, so luckily, you are allowed to use the string comparison…