Package g0401_0500.s0493_reverse_pairs
Class Solution
java.lang.Object
g0401_0500.s0493_reverse_pairs.Solution
public class Solution
extends java.lang.Object
493 - Reverse Pairs.
Hard
Given an integer array nums
, return the number of reverse pairs in the array.
A reverse pair is a pair (i, j)
where 0 <= i < j < nums.length
and nums[i] > 2 * nums[j]
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Example 1:
Input: nums = [1,3,2,3,1]
Output: 2
Example 2:
Input: nums = [2,4,3,5,1]
Output: 3
Constraints:
1 <= nums.length <= 5 * 104
-231 <= nums[i] <= 231 - 1
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Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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reversePairs
public int reversePairs(int[] nums)
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