How to Solve Delete and Earn Problem
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Delete and Earn
You are given an integer array nums. You want to maximize the number of points you get by performing the following operation any number of times: Pick any nums[i] and delete it to earn nums[i] points....
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Understanding the Delete and Earn Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an integer array nums. You want to maximize the number of points you get by performing the following operation any number of times: Pick any nums[i] and delete it to earn nums[i] points. Afterwards, you must delete every element equal to nums[i] - 1 and every element equal to nums[i] + 1. Return the maximum number of points you can earn by applying the above operation some number of times.
Delete and Earn
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Examples
nums = [3,4,2]6You can perform the following operations: - Delete 4 to earn 4 points. Consequently, 3 is also deleted. nums = [2]. - Delete 2 to earn 2 points. nums = []. You earn a total of 6 points.
nums = [2,2,3,3,3,4]9You can perform the following operations: - Delete a 3 to earn 3 points. All 2's and 4's are also deleted. nums = [3,3]. - Delete a 3 again to earn 3 points. nums = [3]. - Delete a 3 once more to earn 3 points. nums = []. You earn a total of 9 points.
Constraints
1 <= nums.length <= 2 * 1041 <= nums[i] <= 104How Interview Coder Helps with Leetcode Problems
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Frequently Asked Questions
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