PS:位运算代码如下 classSolution{public:intfindMaximumXOR(vector<int>&nums){intres=0;intmask=0;for(inti=31;i>=0;i--){mask=mask|1<<i;unordered_set<int>s;for(autonum:nums)s.insert(num&mask);intexcept=res|1<<i;for(autonum:s)if(s.find(except^num)!=s.end()){res=except;break;}}...
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? Example: Input: [3, 10, 5, 25, 2, 8] Output: 28 Explanation: The maximum result is ...
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...
Given anon-emptyarray 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? Example: Input:[3, 10, 5, 25, 2, 8]Output:28Explanation:The maximum result is5^25= 28. 思路:...
Maximum XOR of Two Numbers in an Array (M) 题目 Given anon-emptyarray 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?
13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 参考文献 [LeetCode] Maximum XOR of Two Numbers in an Array 数组中异或值最大的两个数字【特别好】【位运算】maximum-xor-of-two-numbers-in-an-array
have a non-empty array of numbers, a0, a1, a2, … , an-1, where 0 ≤ ai < 231. We have to find the maximum result of ai XOR aj, where 0 ≤ i, j < n. So if the input is like [3,10,5,15,2,8], then the output will be 28. The max result will be 5 XOR 25 = ...
leetcode 421.Maximum XOR of Two Numbers in an Array 题目中给定若干个数,然后任意选定两个数使得其异或值最大。 先利用样例中的: 3 10 5 25 2 8 这些数转换为二进制来看的话那么是先找到最高位的1然后与数组中其他的数相与后的数值保存到set中去,然后利用性质: a^b=c则a^c=b,在set中只要有异或...
https://leetcode.com/problems/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 ...[WXM] LeetCode 421. Maximum XOR of Two Numbers in an Array C++ 421. Maximum XOR of Two Numb...
LeetCode[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?