https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/ https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/130427/()-92 https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/discuss/91049/Java-O(n)-solution-using-bit-manipulation-...
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...
421. Maximum XOR of Two Numbers in an Array——本质:利用trie数据结构查找 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...
https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/description/ 解题方法: 在解题之前,首先要了解2个事情: 两个数XOR的结果取决于这两位数的二进制形式每一位是否相同。当相同时,结果在这一位上为0;当不同时,结果在这一位上为1。 假设我们有3个数:a, b, c;当a 和 b以及b和c...
Leetcode: 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, where0 ≤ i, j <n. Could youdothisin O(n) runtime?Example:...
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?
Maximum XOR of Two Numbers in an Array 标题文字 链接:https://leetcode.com/problems... 可以用trie tree来做。把所有num放进tree,之后对每一个num从最高位找是否存在和当前bit不同的path。把build tree单独写一个函数,结果TLE了,所以放一起了。。
[LeetCode] Maximum XOR of Two Numbers in an Array 数组中异或值最大的两个数字 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.
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?
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