Find all contiguous subarrays of an array python. In-depth solution and explanation for LeetCode 525.
Find all contiguous subarrays of an array python. In case of multiple subarrays, return the subarray indexes which come first on moving from left to right. They form the foundation of many algorithms that deal with array manipulation. I throw the data to temporaryList from elementList to examine all of the subarrays . For each index, compare the subarray of a [] with b [] using a nested loop. Append the extracted subarray to the result list. The function works but there is some duplication. Jul 17, 2025 · [Naive Approach] Comparing All Subarrays The idea is to check for all possible indices in a [] as starting index of subarray b []. We will first define the problem more formally and then discuss a simple solution. You mainly need to return the left and right indexes (1-based indexing) of that subarray. May 29, 2018 · Still not very clear. Subarray = "any part or section of an array", contiguous = "sharing a common border; touching". Jan 7, 2024 · Given a number N which represents the size of the array A [], the task is to find the number of contiguous subarrays that can be formed for every index of the array by including the element at that index in the original array. Please note that the problem specifically targets subarrays that are contiguous and inherently maintains the order of elements. The problem is this: given a list of integers, find all contiguous sublists. Find a contiguous subarray whose length is equal to k that has the maximum average value and return this value. The output should be an array of maximum values corresponding to each contiguous subarray. Return the total number of continuous subarrays. For instance, given the list [1, 2, 3 Jun 27, 2023 · Given an array, arr[] consisting of N integers and integer K, the task is to count the number of contiguous subarrays where each element is in the subarray at least K times. Given: An integer array nums with n elements An integer k representing the required subarray length The task is to: Find all possible contiguous subarrays of length k Calculate the average value for each subarray Return the maximum average value found Jul 23, 2025 · Given a 1-based indexing array arr [] of non-negative integers and an integer sum. This blog will explore interesting Aug 27, 2022 · The aim of this article is to help you compute the subarray whose sum is given and the subarray is contiguous. C++. The subarray sums problem is a classic problem in computer science that asks us to find the sum of all contiguous subarrays in a given array. However, not all subarrays are the same—some are particularly “interesting” based on specific criteria, such as having certain properties or meeting conditions defined by the problem. Contiguous Array in Python, Java, C++ and more. Examples: Input: N = 4 Output: {4, 6, 6, 4} Explanation: Since the size of the array is given as 4. Mar 12, 2020 · I want to write a recursive function to add all of the contiguous subarrays in a list. Can you solve this real interview question? Contiguous Array - Given a binary array nums, return the maximum length of a contiguous subarray with an equal number of 0 and 1. For instance, [1,4] is part of the output in all three answers, but is not part of your example output. Jan 10, 2017 · 23 I have an array [1, 2, 3] of integer and I need to return all the possible combination of contiguous sub-arrays of this array. [[1],[2],[3],[1,2],[2,3],[1,2,3]] How can I handle that with python? One way would be to have 2 loops and the array itself but there should be a better way. A subarray of nums is called continuous if: * Let i, i + 1, , j be the indices in the subarray. This is a common interview question asked during technical interviews for software engineering or data science roles. If no such subarray exists return an array consisting of element-1. Feb 14, 2025 · Get All Sub Arrays Python In Python, there are several methods to obtain all sub-arrays or subarrays of an array. Use Slicing to Get a Subarray of an Array in Python Slicing is a powerful and concise way to obtain subarrays in Python. After iterating over all possible start and end indices, return the result list containing all the subarrays of the input array. May 8, 2025 · Given an array arr [] of size n, the task is to find the kth largest sum of contiguous subarray within the array of numbers that has both negative and positive numbers. Below is the implementation of the above approach: Contiguous subarrays with recursion: how to handle repeated elements I just bombed a technical assessment and I want to make myself feel better by finishing the approach I was working on. I am trying to find the total number of contiguous subarrays that contains only one '1' . I checked the subarrays whether they are correct or not by printing them . A subarray is a contiguous part of an array, and accessing all possible subarrays is a common task in various algorithms and data manipulation scenarios. A subarray is a contiguous non-empty sequence of Aug 24, 2023 · Given an array of integers and a target sum k, the subarray sum problem involves finding the total count of contiguous subarrays having a sum equal to the given target sum. This guide will walk you through the process step-by-step. I wanted to know if there is a way to avoid this. Aug 25, 2025 · Given an array of integers arr [] and an integer k, find the maximum possible sum among all contiguous subarrays of size exactly k. Maximum Average Subarray I - You are given an integer array nums consisting of n elements, and an integer k. Can you solve this real interview question? Continuous Subarrays - You are given a 0-indexed integer array nums. For your information, a contiguous array is one whose elements occupy positions that follow each other. Jul 23, 2025 · Use array slicing arr [i:j] to extract the subarray from the original array. To find all possible subarrays and compute their sums, we can utilize a nested loop approach where the outer loop selects the starting index and the inner loop selects the ending index of the subarray. Finally, we will provide a more Subarrays are contiguous sequences derived from an array. Problem Description You need to find a contiguous subarray of exactly length k from an integer array nums that has the maximum average value. def numSu Mar 10, 2024 · Problem Formulation: Given a list of integers, the task is to identify and return the contiguous subarrays where each element occurs only once. Aug 13, 2025 · Given an array arr[] of integers and an integer k, your task is to find the maximum value for each contiguous subarray of size k. Intuitions, example walk through, and complexity analysis. Then, for each pair of indices i <= i1, i2 <= j, 0 <= |nums[i1] - nums[i2]| <= 2. Sep 30, 2020 · The three first answers list all sub-sequences, but your example output lists only contiguous sub-sequences. A subarray is a contiguous non-empty sequence of Feb 7, 2025 · Your All-in-One Learning Portal: GeeksforGeeks is a comprehensive educational platform that empowers learners across domains-spanning computer science and programming, school education, upskilling, commerce, software tools, competitive exams, and more. If any element does not match, break and check for next starting index. Feb 23, 2025 · Python makes obtaining a subarray or a substring very straightforward compared to most of the other programming languages. For example, given an input array = [3, 4, 5, 4, 3, 6], the desired output would be a list of intervals like [(0, 2), (3, 5)], signifying the slices of the original array with unique elements. Is contiguous referring to the array indices or the values? Please explain what exactly is contiguous about the three subarrays you supplied. Examples: Input: arr [] = [20, -5, -1], k = 3 Output: 14 Explanation: All sum of contiguous subarrays are (20, 15, 14, -5, -6, -1), so the 3rd largest sum is 14. In addition, the sequence of elements is also maintained. This article will delve into the different techniques to achieve this, focusing on efficiency and practicality. Sep 12, 2025 · Given an integer array, find subarrays with a given sum in it. In-depth solution and explanation for LeetCode 525. Aug 12, 2020 · 0 Here i have a elementList which holds the data with only 0's and 1's . In this article, we will learn how to obtain a subarray of an array in Python. If all the elements match, store the starting index in result. Subarray Sums HackerRank Solution: An In this article, we will discuss the subarray sums problem and provide a solution in Python. Better than official and forum solutions. Mastering this concept requires knowledge of two fundamental programming techniques - sliding windows and Given an array of N positive integers, ranging from index 0 to N - 1, how can I find a contiguous subarray of length K with the minimum range possible. Example 1: Input: nums = [0,1] Output: 2 Explanation: [0, 1] is the longest contiguous subarray with an equal number of 0 and 1. In other words, max (subarray) - min (subarray) Mar 10, 2024 · Problem Formulation: We aim to compute the cumulative sum of all possible contiguous subarrays within a given list of numbers. A subarray is a sequence of consecutive elements from the original array. Sep 25, 2024 · In the realm of problem-solving and algorithm design, subarrays are an essential concept. Method 1: Using Iteration and Sets This method leverages Mar 22, 2020 · I am stuck on finding a solution for finding all the contiguous subarrays of a given array in minimum time complexity O (n). py7t nga o6pmb npow juwj 9knj kdlex fc9 3enb uhpmcra