题面 Description Give you two arrays $A[0..2^m 1]$ and $B[0..2^m 1]$. Please calculate array $C[0..2^m 1]$: $$ C[k]=\sum_{i~and~j=k}A[i~xor~j] B[i~or~j] ...
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其他好文 时间:
2020-01-29 23:16:53
阅读次数:
73
Given two sets of integers, the similarity of the sets is defined to be /, where N?c?? is the number of distinct common numbers shared by the two sets ...
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其他好文 时间:
2020-01-29 21:54:49
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84
题目内容 Given a Binary Search Tree and a target number, return true if there exist two elements in the BST such that their sum is equal to the given targ ...
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其他好文 时间:
2020-01-29 20:00:01
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62
题目内容 Given an array nums of n integers and an integer target, find three integers in nums such that the sum is closest to target. Return the sum of th ...
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其他好文 时间:
2020-01-29 18:24:31
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58
A straight dirt road connects two fields on FJ's farm, but it changes elevation more than FJ would like. His cows do not mind climbing up or down a si ...
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其他好文 时间:
2020-01-29 15:43:18
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94
Divide-and-Conquer: 教材中是用快排作为例子介绍分治算法的,主要的是几个式子: 最坏情况下的快排:T(n) = n + T(n-1) 最好情况下的快排:T(n) = n + 2*T((n-1) / 2) 随机情况下的快排:T(n) = n + 1/n * sum(T(i) + T( ...
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其他好文 时间:
2020-01-29 14:19:10
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79
In the "100 game," two players take turns adding, to a running total, any integer from 1..10. The player who first causes the running total to reach o ...
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编程语言 时间:
2020-01-29 10:50:52
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93
Given an array of integers arr, replace each element with its rank. The rank represents how large the element is. The rank has the following rules: Ra ...
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其他好文 时间:
2020-01-29 10:28:22
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74
Given a m * n matrix mat of integers, sort it diagonally in ascending order from the top-left to the bottom-right then return the sorted array. Exampl ...
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其他好文 时间:
2020-01-29 10:17:46
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61
链接: "LeetCode653" 给定一个二叉搜索树和一个目标结果,如果 BST 中存在两个元素且它们的和等于给定的目标结果,则返回 true。 相关标签: 哈希表 类似于求两数之和,我们只需要在遍历二叉树过程中寻找是否存在有数为k 已经遍历到的数即可。 代码如下: python: C++: ...
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其他好文 时间:
2020-01-28 22:58:39
阅读次数:
75