//数据异或校验function BytesXor(buffer:array of byte):Integer;var i:integer;begin Result:=$0; for i:=Low(buffer) to High(buffer) do begin result:=result xor buffer[i]; end;end;
/** * CRC校验算法工具类 */ public class CRCUtil { public static String getCRC(String data) { data = data.replace(" ", ""); int len = data.length(); if (!(len % 2 == 0)) { return "0000"; } int num = len / 2; byte[] para = new byte[nu
421. 数组中两个数的最大异或值 421. Maximum XOR of Two Numbers in an Array 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. 你能在 O(n) 的时间解决这个问题吗? 每日一算法2019/7/13Day 71LeetCode421. Maximum XOR of Two Numbers in
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 resul
异或(exclusive OR)作为4种逻辑操作符之一,相对其他3种(OR/AND/NOT)来说,出场的次数非常少,是因为在日常开发中能用到它的场景本来就不多.对笔者来说,目前接触到场景只有交换两个数值时才会用到. Java Code: int a = 5; int b = 95; System.out.println(a + ", " + b); a ^= b;//等价于 a = a ^ b; b ^= a; a ^= b; System.out.println(a + "