The set [1,2,3,...,n] contains a total of n! unique permutations.By listing and labeling all of the permutations in order, we get the following sequen ...
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其他好文 时间:
2019-04-21 20:01:16
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156
这个题做的真是惨,场上写出了各种bugQAQ。 有一个注意的地方是数据会爆int。 两种做法,第一种假设第一个数是x,那么依次可推出后面的数,然后求和(和为(1+n)*n/2)解得x。 第二种是随便设第一个数为已知数,然后根据输入递推后面的数,找出其中最小的,然后使其变成1即可。 ...
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其他好文 时间:
2019-04-17 23:21:27
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168
思路 直接使用FHQ Treap维护即可 代码 cpp include include include using namespace std; struct Node{ int lson,rson,val,ran,sz,inv; }FHQ[100100]; int Nodecnt=0,a[1001 ...
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其他好文 时间:
2019-04-15 18:17:06
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184
class Solution { public: void nextPermutation(vector& nums) {int n = nums.size(), i = n 2, j = n 1; while (i = 0 && nums[i] = nums[i + 1]) i; if (i = ...
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其他好文 时间:
2019-04-08 21:42:55
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117
Implement next permutation, which rearranges numbers into the lexicographically next greater permutation of numbers. If such arrangement is not possib ...
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其他好文 时间:
2019-04-08 13:11:59
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114
We have some permutation A of [0, 1, ..., N - 1], where N is the length of A. The number of (global) inversions is the number of i < j with 0 <= i < j ...
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其他好文 时间:
2019-04-06 14:02:29
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121
Given an array arr that is a permutation of [0, 1, ..., arr.length - 1], we split the array into some number of "chunks" (partitions), and individuall ...
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其他好文 时间:
2019-04-06 12:32:04
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118
Guess the Permutation CodeForces - 618B Bob has a permutation of integers from 1 to n. Denote this permutation as p. The i-th element of p will be den ...
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其他好文 时间:
2019-04-02 21:02:06
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140
Title: Given a string S that only contains "I" (increase) or "D" (decrease), let N = S.length. Return any permutation A of [0, 1, ..., N] such that fo ...
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其他好文 时间:
2019-04-02 17:05:47
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126
The set [1,2,3,...,n] contains a total of n! unique permutations. By listing and labeling all of the permutations in order, we get the following seque ...
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其他好文 时间:
2019-03-29 10:23:37
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185