0740. Delete and Earn
https://leetcode.com/problems/delete-and-earn
Description
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 earnnums[i]
points. Afterwards, you must delete every element equal tonums[i] - 1
and every element equal tonums[i] + 1
.
Return the maximum number of points you can earn by applying the above operation some number of times.
Example 1:
**Input:** nums = [3,4,2]
**Output:** 6
**Explanation:** You 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.
Example 2:
**Input:** nums = [2,2,3,3,3,4]
**Output:** 9
**Explanation:** You 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 * 104
1 <= nums[i] <= 104
ac
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