Now, our cost for that will be the absolute difference between the selected element and obtained XOR. Therefore, the number of operations required is 5. . DEV Community A constructive and inclusive social network for software developers. Explanation: The optimal solution is to remove the last three elements and the first two elements (5 operations in total) to reduce x to zero. Are you sure you want to create this branch? Already on GitHub? Thank you for your valuable feedback! With you every step of your journey. So that it became 6, Now our array is {2, 4, 6} . If nothing happens, download GitHub Desktop and try again. The task is to find the minimum number of given operations required to reduce the array to 0 elements. Contribute to hungqng/Minimum-Operations-to-Reduce-X-to-Zero development by creating an account on GitHub. Note that this modifies the array for future operations. Minimum Operations to Make Array Equal Medium 1.3K 168 Companies You have an array arr of length n where arr [i] = (2 * i) + 1 for all valid values of i (i.e., 0 <= i < n ). Input: nums = [1,1,4,2,3], x = 5 Enhance the article with your expertise. Medium. Minimum Operations to Reduce X to Zero. Share your suggestions to enhance the article. Naive approach: Find minimum from the array at each step and traverse the entire array to find multiples of these elements and delete them.Efficient approach: Below is the implementation of the above approach: Time Complexity: O(n + m?m), where n represents the size of the given array and m represents the maximum element in the array. Help Harshad with trading II, 3 Complete the below code in the right side coding panel. Are you sure you want to hide this comment? Once unpublished, this post will become invisible to the public and only accessible to Abhishek Chaudhary. Contribute to the GeeksforGeeks community and help create better learning resources for all. Minimum Size Subarray Sum - Given an array of positive integers nums and a positive integer target, return the minimal length of a subarray whose sum is greater than or equal to target. here, Subscribe to Cloudxlab to unlock your environment and get access to all our Subscription Courses along with it, 1 Reduce N to (N/2), if N is divisible by 2. Example 2: Input: nums = [5,6,7,8,9], x . to use Codespaces. Next Greater Element I, 7 The operations that can be performed in one step are as follows: Multiply the number by 2. A tag already exists with the provided branch name. Built on Forem the open source software that powers DEV and other inclusive communities. For further actions, you may consider blocking this person and/or reporting abuse. Auxiliary Space: O(1000001), no extra space is required, so it is a constant. Given an array nums [] and an integer X, the task is to reduce X to 0 by removing either the leftmost or the rightmost array elements and subtracting its value from X, minimum number of times. This article is being improved by another user right now. Thanks for keeping DEV Community safe. To execute a block on the right side coding panel, please press 'shift'+ 'enter'. Templates let you quickly answer FAQs or store snippets for re-use. Calculating the minimum of these absolute values for each element will be our minimum required operation also the element corresponding to the minimum required operation will be our selected element. Naive Approach: Select an element and then find the XOR of the rest of the array. Add 1 to the number. A AmanKumarSingh Read Discuss Courses Practice Given an integer element 'N', the task is to find the minimum number of operations that need to be performed to make 'N' equal to 1. Share your suggestions to enhance the article. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Create a count array that stores the count of each number in the array. Thanks for keeping DEV Community safe. Example 1: Input: nums = [1,1,4,2,3], x = 5 Output: 2 Explanation: The optimal solution is to remove the last two elements to reduce x to zero. 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On each move, you can either go left or right. Next Exercise. In a single operation, any element can be chosen from the array and all of its multiples get removed including itself.Examples: Input: arr[] = {2, 4, 6, 3, 4, 6, 8}Output: 2Operation 1: Choose 2 and delete all the multiples, arr[] = {3}Operation 3: Choose 3 and the array gets reduced to 0 element.Input: arr[] = {2, 4, 2, 4, 4, 4}Output: 1. Here is what you can do to flag theabbie: theabbie consistently posts content that violates DEV Community's Made with love and Ruby on Rails. Taking you to the next exercise in seconds Stay here Finding a sub array without always going over the whole array appears to be too hard. Unflagging theabbie will restore default visibility to their posts. Output: 2 Example 1: Input: N = 8 Output: 4 Explanation: 0 + 1 = 1, 1 + 1 = 2, 2 * 2 = 4, 4 * 2 = 8 Example 2: Input: N = 7 Output: 5 Explanation: 0 + 1 = 1, 1 + 1 = 2, 1 + 2 = 3, 3 * 2 = 6, 6 + 1 = 7 Your Task: You don't need to read input or print anything. In a single operation, any element can be chosen from the array and all of its multiples get removed including itself. 754. Delete All Adjacent Duplicates In a String, 6 It will become hidden in your post, but will still be visible via the comment's permalink. If you know the length of that sub array you can subtract its length from the length of nums to get the number of operations. By clicking Sign up for GitHub, you agree to our terms of service and Note - Having trouble with the assessment engine? To see all available qualifiers, see our documentation. Reach a Number. By using our site, you Return the minimum number of operations to reduce x to exactly 0 if it's possible, otherwise, return -1. Find the XOR of the whole array. Contribute your expertise and make a difference in the GeeksforGeeks portal. Link to problem :https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero/Use coupon ALISHA on any GeeksforGeeks course to get 10% discount:https://practice.geeksforgeeks.org/coursesConnect with me on LinkedIn : https://www.linkedin.com/in/alisha-parveen-80579850/Check out our other playlists:Dynamic Programming:https://www.youtube.com/playlist?list=PLLT4EuYB4kIY_DWiiFY_TW3Egm9pmZPuSTrees: https://www.youtube.com/playlist?list=PLLT4EuYB4kIZzjDUX5VKsU9ECdIlsOdkdHeaps and Maps:https://www.youtube.com/playlist?list=PLLT4EuYB4kIatB7uwwkTDq9m-KQkD_outArrays and Maths: https://www.youtube.com/playlist?list=PLLT4EuYB4kIb0G4k2LxdIs2dCaj9vebqCBit Manipulation:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZGBE71Udl0m68uFxRiMhGSGreedy Algorithms:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZaOVWhgBnQr9w5JxgHAEldSorting and Searching:https://www.youtube.com/playlist?list=PLLT4EuYB4kIaWgO_-unJeY4huZlP3Uln9Strings:https://www.youtube.com/playlist?list=PLLT4EuYB4kIah6F-m0v-zfrQKg1G1zAJCLinked Lists:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZp5ApjgO_5K69Jv4GAGUYtStack and Queues:https://www.youtube.com/playlist?list=PLLT4EuYB4kIY2nfXL0sxzHbDHReuMw_sETwo Pointers: https://www.youtube.com/playlist?list=PLLT4EuYB4kIbclnecGeKq8vmMdaFYdNyuGraphs, BFS, DFS:https://www.youtube.com/playlist?list=PLLT4EuYB4kIb5er32BqvSqnFFxJ0Ciqf7Backtracking:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZfNt7M9FMfcJEiE5E8pmFLNon- DSA playlists:Probability:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZWrGlLjATLbuX7CRitUrq6SQL-Basic Join functions:https://www.youtube.com/playlist?list=PLLT4EuYB4kIZZxUKWLLufuviTI4jWhSHNSQL-Basic Aggregate functions:https://www.youtube.com/playlist?list=PLLT4EuYB4kIa5OBKfvrPRZB6tSVcxhVJNTimestamps:0:00 Explaining the problem4:20 Logic to solve9:51Line by Line Code I tried to avoid doing any pre-processing of the array but could not come up with anything good there. to your account, Link - https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero/. Minimum Operations to Reduce X to Zero, 13 Work fast with our official CLI. Here is what you can do to flag ruarfff: ruarfff consistently posts content that violates DEV Community's 0 stars Watchers. If nothing happens, download Xcode and try again. Return the minimum number of operations to reduce x to exactly 0 if it's possible, otherwise, return -1. DEV Community 2016 - 2023. Practice Given an integer N, the task is to obtain N, starting from 1 using minimum number of operations. Return the minimum number of operations to reduce x to exactly 0 if it is possible, otherwise, return -1. DEV Community 2016 - 2023. Are you sure you want to hide this comment? Note that this modifies the array for future operations. Most upvoted and relevant comments will be first, Day1 - Check Array Formation Through Concatenation, Day 2 Find a Corresponding Node of a Binary Tree in a Clone of That Tree, Day 5 - Remove Duplicates from Sorted List II, Day 7 - Longest Substring Without Repeating Characters, Day 8 - Check If Two String Arrays are Equivalent, Day 10 - Create Sorted Array through Instructions, Day 14 - Minimum Operations to Reduce X to Zero, Day 21 - Find the Most Competitive Subsequence, Day 22 - Determine if Two Strings Are Close, Day 25 - Check If All 1's Are at Least Length K Places Away, Day 28 - Smallest String With A Given Numeric Value, Day 27 - Concatenation of Consecutive Binary Numbers, Day 29 - Vertical Order Traversal of a Binary Tree, January LeetCoding Challenge 2021 (33 Part Series), Getting a ChatGPT powered, Python API, production ready, Building and deploying a web API powered by ChatGPT. Input: n = 7, str = "aebcbda" Output: 2 Explanation: We'll remove 'e' and 'd' and the string become "abcba". We are given an array of n elements. This article is being improved by another user right now. LeetCode; Python; VS Code; About. We need to find the minimum number of increment/decrement operations required for the selected element to make the XOR sum of the whole array zero. Thank you for your valuable feedback! Return the minimum number of operations to reduce x to exactly 0 if it's possible, otherwise, return -1. Well occasionally send you account related emails. DEV Community A constructive and inclusive social network for software developers. Once suspended, ruarfff will not be able to comment or publish posts until their suspension is removed. If theabbie is not suspended, they can still re-publish their posts from their dashboard. Time Complexity: O(N)Auxiliary Space: O(1). Level up your coding skills and quickly land a job. Once unsuspended, theabbie will be able to comment and publish posts again. code of conduct because it is harassing, offensive or spammy. This process of finding cost will be done for each element and thus resulting in Time Complexity of (n^2). The task is to make XOR of whole array 0. The allowed operations to be performed are: Decrement N by 1. Validate Parentheses, 4 Given an array arr[] of N integers. Examples: Input : arr [] = {2, 4, 8} Output : Element = 8, Operation required = 2 Explanation : Select 8 as element and perform 2 time decrement on it. Example: Input: nums = [1,1,4,2,3], x = 5 Output: 2 Explanation: The optimal solution is to remove the last two elements (first 3 and then 2) from nums, to reduce x to zero. You will be notified via email once the article is available for improvement. We're a place where coders share, stay up-to-date and grow their careers. Array Binary . Input: nums = [3,2,20,1,1,3], x = 10 Level order traversal of binary tree, 9 Return the minimum number of operations to reduce x to exactly 0 if it is possible, otherwise, return-1. Made with love and Ruby on Rails. Reduce N to (N/3), if N is divisible by 3. Example 1: Input: N = 5 Arr [] = {3, 5, 0, 0, 4} Output: 3 5 4 0 0 Explanation: The non-zero elements preserve their order while the 0 elements are moved to the right. We read every piece of feedback, and take your input very seriously. After selecting an element, we can either increment or decrement it by 1. Return the minimum number of operations to reduce x to exactly 0 if it's possible, otherwise, return -1. Minimum Operations to Reduce X to Zero - You are given an integer array nums and an integer x. Note that this modifies the array for future operations. There is a destination at position target. Now, suppose we have selected element arr[i], so cost required for that element will be absolute(arr[i]-(XORsum^arr[i])). 1 watching Forks. Since we know that for a number x the elements which satisfy the condition (A % x == 0) are actually the multiples of x and hence we need to find the multiples for every number and set their frequencies to 0 including the chosen element itself. Please Unique Email Addresses, 5 Practice Given an array arr [] of N integers. acknowledge that you have read and understood our. Thank you for your valuable feedback! Contribute your expertise and make a difference in the GeeksforGeeks portal. Approach: The given problem can be solved using Two Pointers technique. They can still re-publish the post if they are not suspended. If ruarfff is not suspended, they can still re-publish their posts from their dashboard. Input: nums = [5,6,7,8,9], x = 4 Minimum Operations to Reduce X to Zero Medium 4K 81 Companies You are given an integer array nums and an integer x. During the i th move (starting from i == 1 to i == numMoves ), you take i steps in the chosen direction. Auxiliary space: O(1) it is using constant space, Time Complexity: O(n), where n is the size of the input array.Auxiliary Space: O(n). Select an element and then find the XOR of the rest of the array. Once unpublished, this post will become invisible to the public and only accessible to Ruair O'Brien. You are given an integer array nums and an integer x. Learn more about the CLI. Help Harshad with trading I, 2 # Return the minimum number of operations to reduce x to exactly 0 if it is possible,otherwise . Enhance the article with your expertise. Sign in Help us improve. Efficient Approach: Find the XOR of the whole array. Minimum Operations to Reduce X to Zero - LeetCode. Given an integer N, the task is to count the minimum steps required to reduce the value of N to 0 by performing the following two operations: Consider integers A and B where N = A * B (A != 1 and B != 1), reduce N to min (A, B) Decrease the value of N by 1 Examples : Input: N = 3 Output: 3 Explanation: Steps involved are 3 -> 2 -> 1 -> 0 We can do the following to achieve this. code of conduct because it is harassing, offensive or spammy. acknowledge that you have read and understood our. acknowledge that you have read and understood our. It will become hidden in your post, but will still be visible via the comment's permalink. This is the best place to expand your knowledge and get prepared for your next interview. Longest Substring with At Least K Repeating Characters, 12 Use Git or checkout with SVN using the web URL. One Edit Distance, 10 1658. Minimum Operations to Reduce X to Zero.py. There were 2 hints in the problem that I ended up using. Minimum-Operations-to-Reduce-X-to-Zero. Note that this modifies the array for future operations. By using our site, you Now, suppose we have selected element arr[i], so cost required for that element will be absolute(arr[i]-(XORsum^arr[i])). Examples: Input: N = 4 Output: 2 4 - 1 = 3 If X is found to be 0 at any point, update the minimum number of operations required. Explanation : Select 8 as element and perform 2, Explanation : Select any of 1 and you have already. Built on Forem the open source software that powers DEV and other inclusive communities. In one operation, you can either remove the leftmost or the rightmost element from the array nums and subtract its value from x. Print the minimum number of operations required. Leetcode practice #1658. Turns out a good solution is to think in reverse (as the hint said) and find the largest sub array what is sum(nums) - x. This video explains a very important programming interview problem which is to find the minimum number of operations to reduce a given number X to 0.I have already explained the dynamic programming solution for this problem in my previous video.Here, I have explained the optimal approach using hashmap.I have first solved the problem statement using proper examples and then i have shown the intuition for solving this problem. Below is the implementation of the above approach. 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Have a question about this project? 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