Watch 10 video solutions for Minimum Array Length After Pair Removals, a medium level problem involving Array, Hash Table, Two Pointers. This walkthrough by NeetCodeIO has 101,495 views views. Want to try solving it yourself? Practice on FleetCode or read the detailed text solution.
Given an integer array num sorted in non-decreasing order.
You can perform the following operation any number of times:
i and j, where nums[i] < nums[j].i and j from nums. The remaining elements retain their original order, and the array is re-indexed.Return the minimum length of nums after applying the operation zero or more times.
Example 1:
Input: nums = [1,2,3,4]
Output: 0
Explanation:
Example 2:
Input: nums = [1,1,2,2,3,3]
Output: 0
Explanation:
Example 3:
Input: nums = [1000000000,1000000000]
Output: 2
Explanation:
Since both numbers are equal, they cannot be removed.
Example 4:
Input: nums = [2,3,4,4,4]
Output: 1
Explanation:
Constraints:
1 <= nums.length <= 1051 <= nums[i] <= 109nums is sorted in non-decreasing order.