messages listlengths 2 2 |
|---|
[
{
"role": "user",
"content": "Write a function that takes in a list of strings and a search term as input and returns a new list of strings that contain the search term.\n\n#Example#\n\nInput:\nlist = [\"apple\", \"banana\", \"grape\", \"orange\"]\nsearch_term = \"ap\"\n\nOutput:\n[\"apple\", \"grape\"]"
... |
[
{
"role": "user",
"content": "What is the function of the 'enumerate' keyword in Python? Provide an example code snippet that demonstrates its usage."
},
{
"role": "system",
"content": "The `enumerate` keyword in Python is used to iterate over a sequence and track the index of each item in the s... |
[
{
"role": "user",
"content": "Create a function in Python to convert time from 12 hour to 24 hour format. Make sure to handle all possible edge cases, such as invalid inputs and handling leading zeros. Additionally, consider implementing error handling for cases where the input does not adhere to the expect... |
[
{
"role": "user",
"content": "What is the difference between deep copy and shallow copy in Python? Provide a code example to demonstrate the concept."
},
{
"role": "system",
"content": "In Python, deep copy and shallow copy are two methods used to create copies of objects. \n\nA shallow copy cre... |
[
{
"role": "user",
"content": "Write a code to calculate the roots of a quadratic equation in Python. Additionally, handle cases where the discriminant is negative by displaying an appropriate error message."
},
{
"role": "system",
"content": "Here's an example code that calculates the roots of a... |
[
{
"role": "user",
"content": "Write a code snippet to create an object of type Car in Python. Additionally, implement a method in the Car class that calculates the total price of the car based on its base price, any optional features, and taxes. The base price should be a required argument when creating a C... |
[
{
"role": "user",
"content": "Create a class in Python that will allow us to initialize and store a given list of numbers. The class should also have a method that returns the sum of all the numbers in the list. Additionally, the class should have a method that returns the product of all the numbers in the ... |
[
{
"role": "user",
"content": "Identify the correct syntax for creating a class with name 'Car' in Python, including a constructor method that takes in parameters for 'make', 'model', and 'year' of the car."
},
{
"role": "system",
"content": "The correct syntax for creating a class with the name ... |
[
{
"role": "user",
"content": "Suggest a better way to compare two strings in Python. Additionally, explain the difference between the '==' operator and the 'is' keyword when comparing strings."
},
{
"role": "system",
"content": "A better way to compare two strings in Python is by using the '==' ... |
[
{
"role": "user",
"content": "Create a Python function which accepts two numbers, a start_1 and a start_2, and an additional parameter, n, representing the length of the desired Fibonacci sequence. The function should return an array with the Fibonacci sequence starting with start_1 and start_2, but only up... |
[
{
"role": "user",
"content": "Given the below data, find the sum of all the odd numbers in the array.\ndata = [5, 15, 7, 20]"
},
{
"role": "system",
"content": "To find the sum of all the odd numbers in the array, you need to iterate through each element in the array and check if it is odd. If i... |
[
{
"role": "user",
"content": "Write a code to get the number of unique elements in a given list, while ensuring that the solution has a time complexity of O(n) and does not use any additional data structures."
},
{
"role": "system",
"content": "To get the number of unique elements in a given lis... |
[
{
"role": "user",
"content": "Write a Python function to convert temperatures from Fahrenheit to Celsius, without using any built-in temperature conversion functions or formulas."
},
{
"role": "system",
"content": "Here is a Python function that converts temperatures from Fahrenheit to Celsius w... |
[
{
"role": "user",
"content": "Create a program to guess a secret number between 1 and 1000. The program should guess the number using a binary search algorithm. The program should also keep track of the number of guesses it takes to find the secret number and print it out at the end."
},
{
"role": "... |
[
{
"role": "user",
"content": "Write a Python function to add an item to a given list, but with the following additional requirements:\n\n1. The function should check if the given item already exists in the list. If it does, the function should not add the item and return an appropriate error message.\n2. Th... |
[
{
"role": "user",
"content": "Write a Python function to create a dictionary from two given lists. The first list should be the keys and the second list should be the values. Ensure that the keys are unique and the values are of type string.\n\nErroneous code reference:\n```\ndef create_dictionary(keys, val... |
[
{
"role": "user",
"content": "Write a code to delete all empty values in a given dictionary while also ensuring that the remaining values are sorted in descending order based on their keys.\nmy_dict = {'a': '', 'b': False, 'c': 0, 'd': None}"
},
{
"role": "system",
"content": "Here is a code tha... |
[
{
"role": "user",
"content": "Write a program that converts a given number to its English word equivalent. The input number can be any positive integer up to 1 million. The program should handle both singular and plural forms of the English words (e.g. \"1 apple\" vs \"2 apples\").\n\nAdditionally, your pro... |
[
{
"role": "user",
"content": "Write a python function to detect if two lists contain the same items in different order. Your solution should have a time complexity of O(n log n), where n is the length of the lists."
},
{
"role": "system",
"content": "Here's a Python function that uses sorting to... |
[
{
"role": "user",
"content": "Count the number of sub strings of length 3 that are present in the sentence. Each sub string should start with a vowel and end with a consonant."
},
{
"role": "system",
"content": "To count the number of substrings of length 3 that start with a vowel and end with a... |
[
{
"role": "user",
"content": "Create a program to find the maximum difference between two prime numbers in an array of positive integers. The array will always contain at least two prime numbers."
},
{
"role": "system",
"content": "Here's a Python program that solves the problem:\n\n```python\ni... |
[
{
"role": "user",
"content": "Separate the given array of numbers into three new arrays, where one array contains prime numbers, one array contains even numbers, and one array contains odd numbers. The prime numbers should be sorted in ascending order. \n\nExample: \nInput: [9, 4, 57, 28, 24, 10]\nOutput:\n... |
[
{
"role": "user",
"content": "Create a function to determine if a given string is a palindrome."
},
{
"role": "system",
"content": "Here's a Python implementation of a function that determines if a given string is a palindrome:\n\n```python\ndef is_palindrome(string):\n # Remove any non-alpha... |
[
{
"role": "user",
"content": "Write a method to calculate the average of an array of n numbers in Python. The array can contain both positive and negative integers. The method should have a time complexity of O(n) and a space complexity of O(1)."
},
{
"role": "system",
"content": "Here is an exa... |
[
{
"role": "user",
"content": "Write a code segment that manipulates a Fibonacci sequence until the sum is greater than a given number and also only includes even numbers in the sequence.\n100"
},
{
"role": "system",
"content": "Here is a code segment in Python that generates a Fibonacci sequence... |
[
{
"role": "user",
"content": "Design a function that takes an array of length n as an argument, and returns an array of the same length, where the output array consists of the elements of the input array in reverse order. Additionally, the function should only use constant extra space and should have a time... |
[
{
"role": "user",
"content": "Design a Python program to print all numbers between 0 and 100 that are divisible by 3 and 5, and are also prime numbers."
},
{
"role": "system",
"content": "To design a Python program that prints all numbers between 0 and 100 that are divisible by both 3 and 5 and ... |
[
{
"role": "user",
"content": "Create a function to calculate the exponent of a given number x raised to power y. The function should have a time complexity of O(log y) and a space complexity of O(1)."
},
{
"role": "system",
"content": "Here is an example of a function that meets the given requir... |
[
{
"role": "user",
"content": "Design a program that prints out the multiplication table up to 100 x 100."
},
{
"role": "system",
"content": "Here is an example of a program in Python that prints out the multiplication table up to 100 x 100:\n\n```python\ndef multiplication_table():\n for i in... |
[
{
"role": "user",
"content": "Devise a function that converts a number represented in the binary system to a decimal number. However, the function should not use any built-in functions or libraries that directly convert binary to decimal."
},
{
"role": "system",
"content": "Here is a Python impl... |
[
{
"role": "user",
"content": "Find the maximum element in a given array (unsorted) using a linear search approach. The array can contain both positive and negative integers. The array can have duplicate elements as well.\n[10, -5, 15, 80, 25, -5, 100, 0]"
},
{
"role": "system",
"content": "To fi... |
[
{
"role": "user",
"content": "Create a Python dictionary with the key-value pair \"Alice\": 28. The dictionary should only allow unique keys and the values should be restricted to positive integers less than or equal to 100."
},
{
"role": "system",
"content": "To create a Python dictionary with ... |
[
{
"role": "user",
"content": "Given two Unix timestamps, find the difference between them in minutes, rounded down to the nearest whole number."
},
{
"role": "system",
"content": "To find the difference between two Unix timestamps in minutes, we can subtract the smaller timestamp from the larger... |
[
{
"role": "user",
"content": "Update the following code snippet to ensure that the values in the dictionary are unique. Additionally, ensure that the keys in the dictionary are also unique.\nmydict = {\"a\":1, \"b\":2, \"c\":3, \"d\":4, \"e\":1}"
},
{
"role": "system",
"content": "To ensure that... |
[
{
"role": "user",
"content": "How do you create a new dataframe by merging two pandas dataframes based on a specific column?"
},
{
"role": "system",
"content": "To merge two pandas dataframes based on a specific column, you can use the `merge()` function in pandas.\n\nHere's an example of how to... |
[
{
"role": "user",
"content": "Define a function that takes a string and prints it in reverse order, but only for strings that contain at least one uppercase letter and one lowercase letter."
},
{
"role": "system",
"content": "Here's an example of a function that meets the given requirements:\n\n... |
[
{
"role": "user",
"content": "Suggest a code snippet in Python to delete the dictionary entry with a key called \"name\". Additionally, ensure that the code snippet also raises an exception if the key \"name\" does not exist in the dictionary, and prints a custom error message indicating that the key does n... |
[
{
"role": "user",
"content": "Implement a recursive function to calculate the factorial of a positive integer. The function should have a time complexity of O(n) and should not use any loops or iteration."
},
{
"role": "system",
"content": "Here is an implementation of a recursive function to ca... |
[
{
"role": "user",
"content": "Write a Python decorator that takes a function as an argument and returns a modified function that only executes if the current date is a prime number."
},
{
"role": "system",
"content": "Here is an example of a Python decorator that takes a function as an argument ... |
[
{
"role": "user",
"content": "Given the class definition below, write a method to calculate the discount and the final price after applying the discount.\n\nclass DiscountCalculator:\n def __init__(self, price, cash_coupon, percentage_coupon):\n self.price = price\n self.cash_coupon = cash_cou... |
[
{
"role": "user",
"content": "Design a code to search a given element x in a vector with a time complexity of O(log n), where n is the number of elements in the vector. The vector is sorted in ascending order.\nvector: [2, 4, 7, 9, 11, 15, 18, 23, 27, 30], x: 11"
},
{
"role": "system",
"content"... |
[
{
"role": "user",
"content": "Develop a code to sort a list in ascending or descending order. The code should also handle cases where the given list contains duplicate elements and should remove any duplicate elements while sorting. The output should be the sorted list without any duplicate elements. The co... |
[
{
"role": "user",
"content": "Construct a program which takes two numbers as input and returns the multiplication of these numbers. However, the program should only use bitwise operators to perform the multiplication. You are not allowed to use the multiplication operator or any other arithmetic operators.\... |
[
{
"role": "user",
"content": "Given a 2-dimensional array of size n x m, where n is the number of rows and m is the number of columns, create a code to transpose the array.\n\nNote: The time complexity should be less than O(n * m) and the space complexity should be less than O(n * m)."
},
{
"role": ... |
[
{
"role": "user",
"content": "Write a code to create a function to rotate a given linked list by a given number of positions.\n\n#Additional Context#\nYou are given a singly linked list and an integer k, where k represents the number of positions to rotate the linked list. A rotation means moving the elemen... |
[
{
"role": "user",
"content": "Generate a random letter between a and z, but exclude the letters e and q from the possible options."
},
{
"role": "system",
"content": "A possible solution to generate a random letter between \"a\" and \"z\" while excluding the letters \"e\" and \"q\" is as follows... |
[
{
"role": "user",
"content": "Given two strings, write a program to find the number of common characters. However, you are not allowed to use any built-in string methods or data structures such as lists or dictionaries. You can only use basic string manipulation operations such as indexing and concatenation... |
[
{
"role": "user",
"content": "Generate a code to take in a list of sentences, totaling no more than 100 words and output the longest sentence. The code should also exclude any sentences that contain numbers or special characters."
},
{
"role": "system",
"content": "Here's a Python code that take... |
[
{
"role": "user",
"content": "Update the code to handle cases when the two numbers in the array are the same. The code should also handle cases when the array contains more than two numbers and return the sum of all the numbers in the array.\ndef add_numbers(nums):\n return sum(nums)"
},
{
"role"... |
[
{
"role": "user",
"content": "Write a program that counts the number of occurrences of a character in a given string. The program should handle multiple characters to count and return the total count of all the characters. Additionally, the program should also ignore case sensitivity while counting the occu... |
[
{
"role": "user",
"content": "Write a Python function which takes a number as an argument and print \"even\" if the number is divisible by 4, print \"odd\" if the number is divisible by 3, and print \"neither\" if the number is neither divisible by 4 nor by 3.\n\n#Erroneous Code#\n```\ndef check_divisibilit... |
[
{
"role": "user",
"content": "Add a parameter to the function to calculate the area of a triangle, given the lengths of all three sides. The function should return the area of the triangle using Heron's formula.\n\ndef calculate_area(side1, side2, side3):\n semi_perimeter = (side1 + side2 + side3) / 2\n ... |
[
{
"role": "user",
"content": "Make a function which takes an array of numbers as an argument and returns the sum of all the numbers that are divisible by 3 and have a remainder of 1 when divided by 4."
},
{
"role": "system",
"content": "Here is a possible implementation of the function in Python... |
[
{
"role": "user",
"content": "Implement a nested for loop in Python that prints out all the prime numbers between 1 and 100."
},
{
"role": "system",
"content": "Here's a nested for loop in Python that prints out all the prime numbers between 1 and 100:\n\n```python\nfor num in range(1, 101):\n ... |
[
{
"role": "user",
"content": "Develop a for loop to write a program that prints the first 10 prime numbers. Additionally, implement a function that checks whether a given number is prime or not, and use this function within your loop to determine the prime numbers."
},
{
"role": "system",
"conte... |
[
{
"role": "user",
"content": "Write a Python function that takes a list of integers as input and returns a new list containing only the even integers from the original list. The function should use the yield keyword to generate each even integer one at a time."
},
{
"role": "system",
"content": ... |
[
{
"role": "user",
"content": "Create a function to do a binary search on a sorted list of integers. The function should take two parameters: the list of integers and the target integer to search for. If the target integer is found in the list, the function should return its index. If the target integer is n... |
[
{
"role": "user",
"content": "Given the following list of strings:\n\nlist_str = [\"one\", \"two\", \"three\", \"four\", \"five\"]\n\nWrite a program that prints out the strings in uppercase without using built-in string manipulation functions (such as str.upper()) or list comprehension."
},
{
"rol... |
[
{
"role": "user",
"content": "Generate a random unique ID consisting of 10 alphanumeric characters (including both uppercase and lowercase letters) and store it in a variable."
},
{
"role": "system",
"content": "Here is an example code snippet in Python to generate a random unique ID consisting ... |
[
{
"role": "user",
"content": "Reverse the given list using python, but you are not allowed to use the built-in reverse() function.\nlist_to_reverse = [2, 3, 5, 6, 8, 10, 11]"
},
{
"role": "system",
"content": "You can reverse a list in Python without using the built-in reverse() function by usin... |
[
{
"role": "user",
"content": "Write a routine that takes in a JSON string and outputs the longest word found inside, but also counts the number of occurrences of each character in the word.\n\nFor example, given the JSON string '{\"John\": 56, \"Ann\":64, \"Victor\": 23}', the routine should output:\n- Long... |
[
{
"role": "user",
"content": "Write a loop that prints the numbers from 10 to 1 in reverse order, each on its own line."
},
{
"role": "system",
"content": "Here's an example of a loop in Python that prints the numbers from 10 to 1 in reverse order:\n\n```python\nfor i in range(10, 0, -1):\n p... |
[
{
"role": "user",
"content": "Find the physical address of a given memory location in a virtual memory system, considering the memory hierarchy and the translation process from virtual to physical addresses. Implement a function that takes a virtual address as input and returns the corresponding physical ad... |
[
{
"role": "user",
"content": "Given a list of numbers, remove all duplicated entries and sort the remaining numbers in descending order. The input list can contain up to 10^6 elements. num_list = [12, 24, 12, 5, 8, 24]"
},
{
"role": "system",
"content": "To solve this problem, we can follow the ... |
[
{
"role": "user",
"content": "Generate a function to identify prime numbers between 0 and n, where n can be a large number (up to 10^9). The function should have a time complexity of O(n log log n)."
},
{
"role": "system",
"content": "Here is a function that identifies prime numbers between 0 an... |
[
{
"role": "user",
"content": "Convert a given integer to its equivalent hexadecimal value.\n\nExample:\nnum = 67\n\nStep 1: Start\nStep 2: Initialize an empty string, hex_value\nStep 3: Create a dictionary to map decimal values to their equivalent hexadecimal characters: hex_map = {0: '0', 1: '1', 2: '2', 3... |
[
{
"role": "user",
"content": "Write a code to filter out all even numbers from an array which contains both even and odd numbers. The filtered array should be sorted in descending order. Additionally, the code should return the sum of all the remaining odd numbers in the filtered array.\narr = [1, 2, 3, 4, ... |
[
{
"role": "user",
"content": "Implement a recursive factorial function in Python."
},
{
"role": "system",
"content": "Here is an example of a recursive factorial function implemented in Python:\n\n```python\ndef factorial(n):\n if n == 0:\n return 1\n else:\n return n * facto... |
[
{
"role": "user",
"content": "Create a Python class to work with complex numbers. The class should have methods to add, subtract, multiply, and divide complex numbers. Additionally, the class should have a method to calculate the magnitude and phase angle of a complex number. The magnitude should be rounded... |
[
{
"role": "user",
"content": "Explain how recursion works and provide a recursive function in Python that calculates the factorial of a given number."
},
{
"role": "system",
"content": "Recursion is a programming technique where a function calls itself to solve a problem. It breaks down a comple... |
[
{
"role": "user",
"content": "Write a function in a programming language of your choice that takes in a string as input and returns the string with each word reversed. For example, if the input is \"hello world\", the function should return \"olleh dlrow\".\n\n#Difficulty Increased by:#\nAdding a requiremen... |
[
{
"role": "user",
"content": "Create a function in Python that adds a new item to the beginning of a list. However, the new item should only be added if it is not already present in the list. If the item is already present, raise a custom exception called \"ItemAlreadyExistsError\" with an appropriate error... |
[
{
"role": "user",
"content": "Construct an algorithm to calculate the GCD of two numbers using recursion and without using any built-in functions or libraries."
},
{
"role": "system",
"content": "To calculate the GCD of two numbers using recursion, you can use the Euclidean algorithm. Here is an... |
[
{
"role": "user",
"content": "Write a function to find the closest pair of points in a given array of points. The function should have a time complexity of O(n^2) and should not use any additional data structures."
},
{
"role": "system",
"content": "Here is a possible implementation of a functio... |
[
{
"role": "user",
"content": "Create a function to delete the first occurrence of a specific item from a singly linked list given the head of the list and the item to be deleted."
},
{
"role": "system",
"content": "Here's an example of a Python function that deletes the first occurrence of a spe... |
[
{
"role": "user",
"content": "Construct an algorithm to find all possible combinations of a string of characters with a time complexity of O(n!)."
},
{
"role": "system",
"content": "To find all possible combinations of a string of characters with a time complexity of O(n!), you can use a recursi... |
[
{
"role": "user",
"content": "Implement a function to calculate the total amount of money earned from a given array of stock prices, with the additional requirement that the function should only include the stock prices that were bought and sold on consecutive days.\narr = [5, 7, 15.5, 6, 10, 11]"
},
{
... |
[
{
"role": "user",
"content": "Create a Python function that generates a random number between two specified numbers. However, the function should throw an exception if the lower bound is greater than or equal to the upper bound.\nlower_bound = 20\nupper_bound = 10"
},
{
"role": "system",
"conten... |
[
{
"role": "user",
"content": "Write a function that finds the largest prime number in an array of integers."
},
{
"role": "system",
"content": "Here is a possible implementation of a function that finds the largest prime number in an array of integers:\n\n```python\nimport math\n\ndef is_prime(n... |
[
{
"role": "user",
"content": "Create a function that takes in a string and returns a new string in which all the characters are reversed. However, the function should not reverse the order of the words within the string.\n\ns = \"Hello World\""
},
{
"role": "system",
"content": "Here is a possib... |
[
{
"role": "user",
"content": "Assume an array contains elements from 1 to 100. You need to find the missing element. However, the array may also contain duplicate elements. Find the missing element while accounting for duplicates.\n\narr = [1, 2, 4, 6, 7, 8, 10, 11, 12, 13, 15, 15, 15]"
},
{
"role":... |
[
{
"role": "user",
"content": "Create an array of integers with values 0, 1, 2, 3, 4. Sort the array in descending order."
},
{
"role": "system",
"content": "To create an array of integers with values 0, 1, 2, 3, 4 and sort it in descending order, you can use the following code in Python:\n\n```p... |
[
{
"role": "user",
"content": "Produce a function that takes in an array of integers and returns an array with all the prime numbers in it. The function should also handle negative numbers and floating-point numbers correctly.\n\nExample:\narr = [2, -11, 9.5, 5, 4, 7]\nOutput: [2, -11, 5, 7]\n\nNote: 9.5 is ... |
[
{
"role": "user",
"content": "Create a method that returns the count of all elements in an array that are larger than the given value x and their sum.\n[2, 3, 5, 7, 11, 13] and x = 4"
},
{
"role": "system",
"content": "Here is an example of a method in Python that returns the count of all elemen... |
[
{
"role": "user",
"content": "Write a Python function to check if an element is present in a given list or not. The function should also return the index of the element if it is present in the list. The list can contain duplicate elements, and the function should return the index of the first occurrence of ... |
[
{
"role": "user",
"content": "Create an array of 10 non-repeating random integers between 1 and 1000, where each integer is divisible by 7 and not divisible by 3."
},
{
"role": "system",
"content": "Here is one possible solution in Python:\n\n```python\nimport random\n\narray = []\n\nwhile len(a... |
[
{
"role": "user",
"content": "Compare and contrast the features of the five programming languages: Python, Java, C++, Ruby, and JavaScript. Provide detailed explanations and examples for each language."
},
{
"role": "system",
"content": "Python:\n- Python is a high-level, interpreted programming... |
[
{
"role": "user",
"content": "Create a function that takes two arguments, a string and a list. The function should concatenate each element of the list with the string and print out the result.\n\nFor example, if the input string is \"Example: \" and the list is [\"a\", \"b\", \"c\"], the function should pr... |
[
{
"role": "user",
"content": "Sort the items in the list alphabetically in descending order.\nmy_list = ['bird', 'cat', 'turtle', 'dog']\n\n#Additional Steps#\n1. Convert all the items in the list to lowercase before sorting.\n2. Implement a custom sorting function that sorts the items based on their length... |
[
{
"role": "user",
"content": "Write a program that removes all duplicate words from a given string. The program should output the modified string with duplicate words removed.\n\n#Erroneous Code Reference#\nHere is a piece of erroneous code that attempts to solve the problem but does not work correctly:\n\n... |
[
{
"role": "user",
"content": "How would you add the following list to a specific key in a nested JSON document using Python? The key should be located at a depth of at least 3 levels from the root of the JSON structure."
},
{
"role": "system",
"content": "To add a list to a specific key at a dep... |
[
{
"role": "user",
"content": "Generate a function to check if a parameter is equal to a specific string. The function should also check if the string contains any uppercase letters and return true if it does, and false otherwise."
},
{
"role": "system",
"content": "Here's an example of a functio... |
[
{
"role": "user",
"content": "Implement a function in Python to convert a given RGB color to Hexadecimal format. The input RGB color is represented as a list of three integers ranging from 0 to 255. The output hexadecimal color should be a string prefixed with the '#' character. If the input RGB color is no... |
[
{
"role": "user",
"content": "Reverse a given string without using built-in library functions and without using additional data structures. The solution should have a time complexity of O(n) and a space complexity of O(1)."
},
{
"role": "system",
"content": "To reverse a string without using bui... |
[
{
"role": "user",
"content": "Write a code for sorting the given array of numbers in ascending order. Additionally, you need to handle and display an error message if the array contains any non-numeric elements."
},
{
"role": "system",
"content": "Here is an example code that sorts an array of n... |
[
{
"role": "user",
"content": "Suggest a method to optimize the following code to find the maximum value in an array, but without using any comparison operators such as \">\".\n\ndef find_max(arr):\n max = arr[0]\n \n for i in range(1, len(arr)):\n if arr[i] - max > 0:\n max = arr[... |
[
{
"role": "user",
"content": "Implement a function that takes a string as an argument, removes all duplicate characters from it, and returns the modified string. The function should only remove duplicate characters that are adjacent to each other. For example, if the input string is \"aabbbccc\", the functi... |
[
{
"role": "user",
"content": "How would you extend the following code to add the features \"undo\" and \"redo\" while maintaining a constant time complexity for adding items?\n\ndef add_item(item, list):\n list.append(item)\n\ndef undo(list):\n if len(list) > 0:\n list.pop()\n\ndef redo(undone_... |
[
{
"role": "user",
"content": "Given an array containing a string with duplicates, output an array with only unique strings, while maintaining the original order of the strings.\n\n['apple', 'apple', 'orange', 'kiwi', 'apple', 'banana', 'banana']\n\n# Higher Difficulty Test #\nIncrease the size of the input ... |
[
{
"role": "user",
"content": "Find the number of times a given element appears in a given array. The array can contain both positive and negative integers. The length of the array can be up to 1 million elements. The element to search for can be any integer value. The time complexity of the solution should ... |
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