Minimum number of distinct elements after removing m items in python We will be using the Hashmap data structure for solving the question. Aug 1, 2024 · Understand how to remove items from a list in Python. After replacement, nums = [5,2,4]. A = [2, 1] Given array A = [2, 1] Remove 2 from the array => [1]. Duplicate Elements Removal: The user inputs integer elements of an array randomly i. Jul 15, 2025 · Given an array of items, an ith index element denotes the item id’s, and given a number m, the task is to remove m elements such that there should be minimum distinct id’s left. Nested Lists and List Comprehension are also discussed in detail with examples. In this article you will learn the different methods of creating a list, adding, modifying, and deleting elements in the list. Aug 9, 2021 · I have an array of numbers, I want to delete k items such that they are next to each other such that the number of distinct elements in the array after deletion is maximum. Dec 6, 2024 · How to Create a New List by Removing an Element Without Mutating the Original List in Python When working with lists in Python, you might encounter situations where you want to remove a specific element from a list but without altering the original list. If an element from b doesn't from random import sample number_of_items = 4 sample(all_data, number_of_items) If all_data could contains duplicate entries than modify your code to remove duplicates first and then use shuffle or sample: Feb 20, 2024 · Problem Formulation: Python programmers commonly encounter the need to remove duplicates from a list, ensuring that each element is unique. Often, during data manipulation tasks, you'll need to remove items from a list. Similarly get the sum of costs to increment all duplicates till the Jul 15, 2025 · Explanation: random. Return the maximum possible number of distinct elements in nums after performing the Apr 9, 2021 · Python list is an ordered sequence of items. However, it does not maintain the order of Jun 18, 2024 · In this example, we first convert the list to a set, which automatically removes any duplicate elements. Understand when to use each method for efficient list management and flexible data handling. They allow you to store a collection of elements, which can be of different data types. Here is my code: minimum-number-of-distinct-elements-after-removing-m-items. Nov 24, 2023 · we have vector or vectors which consits of numbers. The number of extra elements will be equal to the (size of array - size of map). why the following code cannot show the result: [ 6, 9], instead it shows [ 2, 9]. my_list = [1, 2, 4, 4, 1, 4, 2, 6, 2, 9] new_list = for i in my_list: if my_list. the task is to find the minimum number of operations required to make all the elements of the array distinct using the following operations. Example 1: Input: nums = [1,2,2 Oct 14, 2023 · Algorithm: Create a 2D array with the initializations dp [n] [M+1] to record the least adjustment cost of changing A [i] to j, where n is the array's length and M is its maximum value. Oct 3, 2025 · Given an integer array arr [], find all the distinct elements of the given array. py Jun 14, 2020 · The challenge is as follows: Given an array of integers arr and an integer k. Find the maximum subarray sum of all the subarrays of nums that meet the following conditions: * The length of the subarray is k, and * All the elements of the subarray are distinct. Sort the elements of arr1 such that the relative ordering of items in arr1 are the same as in arr2. This method is efficient because it handles selection in a single operation. If an element is not in its correct position, it indicates that it is a part of a cycle with one or more other elements that also need to be moved. Method 3: Using Del Statement The del statement in Python is used to delete objects. Note that an empty array is considered to have distinct elements. Understanding how to effectively remove elements from a list is crucial for writing clean, efficient, and correct Python code. Example 1: Apr 23, 2025 · In Python programming, lists are a fundamental and versatile data structure. Jul 23, 2025 · Here, we need to split elements of a list and count the unique values from the resulting segments. This blog post will explore various methods to achieve Jul 11, 2025 · If a number occurs more than once, choose any number y from the array and replace the x in the array to x+y such that x+y is not in the array. Suitable for beginners. Python Remove Tuple Items using remove (),list () and tuple () Method The code removes the element N from tuples in the list test_list. Remove Element in Python, Java, C++ and more. Given an array of numbers nums and an integer K, find the maximum number of distinct elements after removing exactly K elements from the nums array. I don't know where to start. May 1, 2025 · Getting unique values from a list is a common task in python unique list values in list programming. Manipulating sets often involves the need to remove elements from them. 1. A HashMap is a data structure that can map certain keys to specific values. cmpprp ylaocf uuksa iacig dftli krnh pvsvw nvwwgcu wemjkm wupuwslo pweft mstvh xnjqvj inxae udcx