20-Write a function listFirstChars() that takes a list of strings as parameter, returns a new list made of the first characters of the strings in the list. Example: If the parameter list contains ["give", "one", "old", "disk"], the function will return ["g", "o", "o", "d"].

20-Write a function listFirstChars() that takes a list of strings as parameter, returns a new list made of the first characters of the strings in the list. Example: If the parameter list contains ["give", "one", "old", "disk"], the function will return ["g", "o", "o", "d"].

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

See similar textbooks

Related questions

Q: Write a function that takes list and a number (x) as parameters. Assume list contains only numbers,…

A: - We need to solve the number list problem in python.

Q: Write and test a function shuffle (my List ) that scrambles a list into arandom order, like…

A: Given: Write and test a function shuffle (my List ) that scrambles a list into arandom order, like…

Q: Write a function starting_A that takes a list of strings called words as a parameter, and returns a…

A: Hi. As you have not mentioned any programming language, I will attempt it using Python. Let's…

Q: 8. Write a function indices(L) that takes a list and returns a dictionary containing lists of…

A: Task :- Write a python program that takes a list and returns a dictionary containing lists of…

Q: 3. Write a function that takes in a list returns a new list with only the odd elements from the…

A: Note: we are only allowed to solve one question in one post.Since 1 and 2 are done I am solving the…

Q: Write a function that accepts a list as an argument and calculates the sum of each element of the…

A: Program: Programs are used to interact with computer systems and solve complex problems. The main…

Q: 6- Write a lambda function that finds the average of arguments a, b, and c and prints the result. 7-…

A: I give the code for both 6 and 7 in Python along with output and code screenshot

Q: 6. Write a program that creates a list-returned function to display a lists contains all but the…

A: The program is written in Python. Check the program screenshot for the indentation. Please check…

Q: Given the following function header: def count_types(1st: list[Any]) -> list[int]: Given a list of…

A: Test 1 : contain empty list so, it cannot have duplicate test cases. Test 2: contain single element…

Q: Exercise 3: Single parameter Write a function print_even() which • takes a list of integer numbers…

A: A number is said to be an even number if the number is divisible by 2 and the remainder of the…

Q: numPairs Write a function numPairs that accepts two arguments, a target number and a list of…

A: Actually, python is a easiest programming language. It has a concise(less) code.

Q: 1) Write a function that takes the address of a list and returns the reversed list.

A: The python code for 1st question:

Q: Write a function mid to keep elements of an integer list between 5 and 10. One function only. mid…

A: NOTE: Since the question doesn't include the programming language use to code the problem so I am…

Q: complete the following function. // It is the same as observeCounter except that f has a parameter…

A: // It is the same as observeCounterList except that f has a parameter of type Array[Counter] not…

Q: iv) Define a function in Python that takes a list as parameter and returns a new list that contains…

A: Write a Python program to define a function that takes a list as a parameter and returns a new list…

Q: What is the best way to reuse lines of code? A. Copy and paste them wherever needed B. Lines of code…

A: The above question is solved in step 2 :-

Q: A a. A Pythagorean triple is a list [a, b, c] of positive integers a < b <c so that a + b? = c2.…

A: Python used to answer this question

Q: 6. Write and test a function shuffle(myList) that scrambles a list into a random order, like…

A: The answer is given below.

Q: Q-No.4: Add the following functions and write a program to test these functions in the class…

A: System.exit(0); It is used to exit a program at any point in java. General syntax of node :…

Q: 8. Write a function called starts_with that takes as parameter a list of strings called words and…

A: The following are steps need to be taken for the given program: Initializing an empty dictionary…

Q: appens when we use the build-in function any() on a list? if any([True,False,False,False])==True:…

A: What happens when we use the build-in function any() on a list? if…

Q: Write a function "finalGrade" that takes a list "classList" which contains a sublist for each…

A: Here, we are operating on Lists and Tuples are immutable and cannot be inserted or appended. So, do…

Q: In python, create a function wherein you transfer elements from a list into different lists. If a…

A: 1. Define a function called 'splitList' which takes 2 parameters, a List and a Stop Element 2.…

Q: Write a function list2DigitOdd() that creates and returns a list that contain all positive 2-digit…

A: I have given an answer in step 2.

Q: 3 Write a function to generate a date string given numeric values for month, day, and year, and a…

A: dictornary = {1: ('January', 'Janvier', 'Januar'), 2: ('February', 'Février',…

Q: 15- Write a function that takes two positive integers as a parameter .The first integer is the…

A: Provided below is the program which takes two positive integers from user for number of heads and…

Q: 16-Write a function called find_integer_with_most_divisors that receives a list of integers and…

A: Since the programming language is not specified in the question, so I am using python programming…

Q: 2. Write a function which will take list as a argument and this function will return a reversed list…

A: Given :- Write a function which will take list as a argument and this function will return a…

Q: 5. The following function indexCounter aims to find and return all the indices of the element x in a…

A: def indexCounter(L, x): indexList = [] startIndex = 0 while startIndex < len(L):…

Q: i) Write a C++ function to insert all the elements of the vector into a list and return the list…

A: Write a C++ function to insert all the elements of the vector into a list and return the list from…

Q: 1 - Write a Python function that will do the following: 1. Ask the user to input an integer that…

A: Given: 1 - Write a Python function that will do the following: 1. Ask the user to input an integer…

Q: 3. Write a function in Python that takes an int list and returns a new list where all odd numbers…

A: Code: def move(data): result=[] # Adding odd numbers to the front for i in data:…

Q: Write a function called chop_list that takes a list, modifies it by removing the first and last…

A: def chop_list(list1): # remove first element list1.pop(0) # remove last element list1.pop() # return…

Q: 2. Write a function max(L) which examines the argument list L, and returns the largest object of ty…

A: In the first question, we have to find the maximum float element of the list.In the second question,…

Q: 1. A list of numbers is said to be balanced if the sum of its first half is equal to the sum of its…

A: As per our company guidelines we are supposed to answer only one question per post and kindly…

Q: 4. Write a function remove_repetition that takes any list 1st and returns a new list with the same…

A: (1) Create an empty list called "res" (2)Loop through each element in the list (3) If the element is…

Q: a- Write a Python function Salary_levels, that takes a list as an argument and returns the number of…

A: You can return many values from function as tuple and this is the beauty of Python

Q: QUESTION I (40p) : Write the following function that sorts and merges two lists into a new sorted…

A: Program Approach: Create 2 empty lists list1 and list2. Fill both lists by taking numerical input…

Q: True or false? When a list is passed to a function, a new list is created and passed to the…

A: List List is used to store the multiple items in the single variable. Items in list are changeable,…

Q: Write a function sumLength() that takes a list of strings as parameter, finds and returns the total…

A: A list is a collection that holds multiple data items using one variable. The values of the list can…

Q: 1.d) In Python, define a function that takes a list as a parameter and returns the count of all…

A: In Python, define a function that takes a list as a parameter and returns the count of all…

Q: python- Write a function called get_words that takes a list of words and a letter, and returns a…

A: #method that takes list of words and a letter#then returns new list words which dont have the given…

Q: C++ Create a generic function add_bookends(ls, e) that adds a copy of element e to the front and…

A: #include <iostream>#include <list>using namespace std;// template function to put…

Q: b. Write a function cutL2 that removes the last two items from a list given as its argument The…

A: - For doing this we have to pass the list as with reference. - We are using C++ here. - We will…

Q: Write a function called reverse_list that takes in a list and returns the reverse of the list. E.g.,…

A: The above question is solved in step 2 :-

Q: python wirte a function max_indexes(xs) that inserts a list xs with numbers and returns a list of…

A: PROGRAM: #Defining max_indexes() def max_indexes(xs): #Defining list to store the…

Q: Define a function max_run(lst: list) -> int to find the maximum run in a list. A run is a…

A: Use a list to store the consecutive occurrences and then finally return max of that list

Q: O Write a function that takes a list and 2 integers x and y as parameter an the following: • If the…

A: I have written python code below:

Q: Write a function called chop that takes a list, modifies it by removing the first and last elements,…

A: We will be seeing the simple program for implementing our classes. We will be having comments which…

Q: Given the following function header: def count_types(1st: list[Any]) -> list[int]: Given a list of…

A: Task :- choose the correct option for given question.

Question

-Python3-

20-Write a function listFirstChars() that takes a list of strings as parameter, returns a new list made of the first characters of the strings in the list.
Example: If the parameter list contains ["give", "one", "old", "disk"], the function will return ["g", "o", "o", "d"].

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

Write a function list2DigitOdd() that creates and returns a list that contain all positive 2-digit odd numbers. The function call list2DigitOdd() will return a list containing 11, 13, 15, ..., 99.
1 - Write a Python function that will do the following: 1. Ask the user to input an integer that will be appended to a list that was originally empty. This will be done 5 times, meaning that when the input is complete, the list will have five elements (all integers). a. Determine whether each element is an even number or an odd number b. Return a list of five string elements "odd" and "even" that map the indexes of the elements of the input list, according to whether these elements are even or odd numbers.For example: if the input sequence is 12, 13, 21, 51, and 30, the function will return the list ["even", "odd", "odd", "odd", "even"].
Write a function that will accept a list of integers and return the sum of the contents of the list(……if the list contains 1,2,3 it will return 6…..)
1) Write a function that takes one argument, a list named sample-list. 2 ) If the length of the sample-list is > 8, then use the last element of sample-list and return it in a list. 3) If the length of sample-list is <= 8 and > 4, then return the first elements of sample-list in a list. 4) Otherwise, return the string “This is the third option.”. Please make sure to test your function!!! and explain your code shortly by adding comments to each line.
1- Programming Problem Part 1 Write a function that will have a list as an input, the task of the function is to check if all the elements in the list are unique,( i.e. no repetition of any value has occurred in the list), then the function returns true otherwise it returns false. Your program should include a main method that call the method to test it. (If you would use built-in functions in Python, use lists’ or dictionaries’ methods as we studied their time efficiency in class)
***python only*** Write a function votes_by_race() which takes a list of dicts as a parameter and returns a dict. For example, given the following list: votes = [{'for': 'A, 'age': 35, 'race': 'w'}, {'for': 'B', 'age': 40, 'race': 'b'}, {'for': 'B', 'age': 20, 'race': 'b'}, {'for': 'A', 'age': 30, 'race': 'a'}, {'for': 'A', 'age': 41, 'race': 'w'}, ] The call votes_by_race(votes) should return the following dict:{"White": 2, 'Black': 2, 'Asian': 1, "Hispanic': 0}
16-Write a function called find_integer_with_most_divisors that receives a list of integers and returns the integer from the list with the most divisors .In the event of a tie, the first case with the most divisors returns .For example: If the list looks like this: [8, 12, 18, 6] In this list, the number 8 has four divisors, which are ;[1,2,4,8] :The number 12 has six divisors, which are ;[1,2,3,4,6,12] :The number 18 has six divisors, which are ;[1,2,3,6,9,18] :And the number 6 has four divisors, which are : [1,2,3,6]Note that both items 12 and 18 have the maximum number of divisors and are equal in number of divisors (both have 6 divisors) .Your function must return the first item with the maximum number of divisors ;Therefore it must return the following value: 12
Write a function that takes list and a number (x) as parameters. Assume list contains only numbers, the function displays all of the numbers that are greater than x, and return true. If the function does not find any number greater than x, return your false which indicates an error.
PYTHON CODEWrite a function list3Digit10() that creates and returns a list that contain all positive 3-digit numbers that are multiples of 10. The function call list3Digit10() will return a list containing 100, 110, 120, ..., 990.
8-9. Messages: Make a list containing a series of short text messages. Pass the list to a function called show_messages(), which prints each text message. 8-10. Sending Messages: Start with a copy of your program from 8-9. Write a function called send_messages() that prints each text message and moves each message to a new list called sent_messages as it’s printed. After calling the function, print both of your lists to make sure the messages were moved correctly. 8-11. Archived Messages: Start with your work from 8-10. Call the function send_messages() with a copy of the list of messages. After calling the function, print both of your lists to show that the original list has retained its messages. 8-12. Sandwiches: Write a function that accepts several items a person wants on a sandwich. The function should have one parameter that collects as many items as the function call provides, and it should print a summary of the sandwich that’s being ordered. Call the function three times,…
Q4. Write a program that read 2 matrices and has a function which finds their sum. Q5. Write a program that read 2 matrices and has a function which finds their multiplication. Q6. Write a program that handles a list of numbers where it has the following functions - Function that finds their average and sum - Function that finds their maximum and minimum - Function that search for a given number in that list. - Function that count the occurrence of a given number in that list. Then the program should do the following: - Read the list - Find the average and the sum of that list - Find the minimum and the maximum of that list - Count the occurrence of a given number in that list.
- Question-2: Functions, Iterations and List • Write a function that takes a positive integer n as its parameter. • Return a list whose o values are numbers between n and 2n.