Given two integersnandk, find how many different arrays consist of numbers from1tonsuch that there are exactlykinverse pairs. We define an inverse pair as following: Forithandjthelement in the array, ifi<janda[i
Given two integersnandk, find how many different arrays consist of numbers from1tonsuch that there are exactlykinverse pairs. We define an inverse pair as following: Forithandjthelement in the array, ifi<janda[i]>a[j]then it's an inverse pair; Otherwise, it's not. Since the answer ma...
629. K Inverse Pairs Array Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. We define an inverse pair as following: For ith and jth element in the array, if i < j and a[i] > a[j] then it...
leetcode 629 K Inverse Pairs Array 问题描述: Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. We define an inverse pair as following: For ith and jth ele......
Given two integers n and k, find how many different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. We define an inverse pair as following: For ith and jth element in the array, if i < j and a[i] > a[j] then it’s an inverse pair; Otherwis...
For an integer array nums, an inverse pair is a pair of integers [i, j] where 0 <= i < j < nums.length and nums[i] > nums[j]. Given two integers n and k, return the number of different arrays consist of numbers from 1 to n such that there are exactly k inverse pairs. Sin...
来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/k-inverse-pairs-array 著作权归领扣网络所有。商业转载请联系官方授权,非商业转载请注明出处。 2. 动态规划 f(i,j) 表示i个数,j个逆序对的组合方式种类 i个数的j个逆序对的组合,可以在i-1个数的基础上得到 把第i个数插入到前面i-1的i个...
@param array int整型一维数组* @return int整型*/varcount=0funcInversePairs(array[]int)int{/...
对于一个整数数组nums,逆序对是一对满足0 <= i < j < nums.length且nums[i] > nums[j]的整数对[i, j]。 给你两个整数n和k,找出所有包含从1到n的数字,且恰好拥有k个逆序对的不同的数组的个数。由于答案可能很大,只需要返回对109+ 7取余的结果。
629 K Inverse Pairs Array K个逆序对数组 Description: For an integer array nums, an inverse pair is a pair of integers [i, j] where 0 <= i < j < nums.length and nums[i] > nums[j]. Given two integers n and k, return the number of different arrays consist of numbers from 1 to...