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. ...
这道题的题目很好理解,就是给你一个非空数组,求出数组中任意两个数异或后能得到的最大值。原题链接:LeetCode 。根据题目下面的tag的提示,本题的解题思路是Trie树的利用和整数的位操作。 这里Trie树建立的思路是,整数在存储时是一个占据 bit的数,因此可以看成一个含 个字符的字符串,这个字符串中的每个字符只可能是 或 。因此,将一个整数插入Trie树就是从它的最高位开始,根据每一位上的 ...
2017-02-15 20:33 0 1461 推荐指数:
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. ...
https://leetcode.com/problems/maximum-xor-of-two-numbers-in-an-array/ 利用了异或的”自反性“: a ^ b = c,而a ^ b ^ b = a, 则 c ^ b = a 其他运算定律有:交换律、结合律、分配律。 注意 ...
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
题目: You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain ...
本题是使得两个链表相加,每个链表中值均为0~9,对于两个链表对应的值相加值sum若大于9,则为sum%10,并在指向的下一对节点的和sum上加1。 做题思路: 判断两链表是否有空链表,若有, ...
题目: 两个数字求和,数字用链表表示,每一个结点代表一位。链表顺序与数字顺序相反,即表头存放数字的最低位。 解法: 分别遍历两个链表的每个结点,对两个结点求和即可。要维护一个变量保存每次相 ...
原题地址:https://oj.leetcode.com/problems/add-two-numbers/ 题意: You are given two linked lists representing two non-negative numbers. The digits ...
445-Add Two Numbers II You are given two linked lists representing two non-negative numbers. The most significant digit comes first and each ...