对于一个数字,我们可以用一个长度为 32 的二进制数字来表达。如果我们从高位到低位把每个位置上的 digit 放入一棵字典树(这里其实只有 0 和 1 两种情况所以是二叉树),那么对于某个数字 x 而言,如果我要找和他做 XOR 操作结果更大的数字,那么我只要尽量去找每一个 digit 上都与 x 不同的数字即可,这个概念...
https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/91049/Java-O(n)-solution-using-bit-manipulation-and-HashMap https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/91064/C%2B%2B-22-ms-beats-99.5-array-partitioning-similar-to-quick-sort L...
Given anon-emptyarray of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai< 231. Find the maximum result of aiXOR aj, where 0 ≤i,j<n. Could you do this in O(n) runtime? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum result is 5 ^ 25 = ...
今天和大家聊的问题叫做数组中两个数的最大异或值,我们先来看题面:https://leetcode-cn.com/problems/maximum-xor-of-two-numbers-in-an-array/ Given an integer array nums, return the maximum result of nums[i] XOR nums[j], where 0 <= i <= j < n. 给你一个整数数组nums ,返回 nums[i] ...
421 Maximum XOR of Two Numbers in an Array 数组中两个数的最大异或值 Description: Given an integer array nums, return the maximum result of nums[i] XOR nums[j], where 0 ≤ i ≤ j < n. Follow up: Could you do this in O(n) runtime?
题目链接:https://leetcode-cn.com/problems/maximum-xor-of-two-numbers-in-an-array 难度:中等 通过率:56.5% 题目描述: 给定一个非空数组,数组中元素为 a0, a1, a2, … , an-1,其中 0 ≤ ai < 231 。 找到ai 和aj 最大的异或 (XOR) 运算结果,其中0 ≤i,j<n。
LeetCode[421] Maximum XOR of Two Numbers in an Array Given a non-emptyarrayof numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime?
421. Maximum XOR of Two Numbers in an Array Given a non-empty array of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. Find the maximum result of ai XOR aj, where 0 ≤ i, j < n. Could you do this in O(n) runtime?
1. Description Maximum XOR of Two Numbers in an Array 2. Solution Version 1 class Solution{public:intfindMaximumXOR(vector<int>&nums){intmax=0;intcurrent=0;for(inti=0;i<nums.size();i++){for(intj=i+1;j<nums.size();j++){current=nums[i]^nums[j];if(current>max){max=current;}}...
来源:力扣(LeetCode) 链接:https://leetcode-cn.com/problems/maximum-xor-of-two-numbers-in-an-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. Tries树 题目要求O(n)时间复杂度,两两异或O(n2) 考虑将每个数字的二进制位插入Trie树(从高位往低位插入)O(n) ...