js bitwise operation all in one 位运算 & 按位与 | 按位或 ^ 按位异或 / XOR let a = 5; // 00000000000000000000000000000101 a ^= 3; // 00000000000000000000000000000011 console.log(a); // 00000000000000000000000000000110 let b = 5; // 00000000000000000000000000000101…

Brief linkFly的<JavaScript-如果...没有方法>中提及如何手写Math.round方法,各种奇技淫招看着十分过瘾,最让我惊叹的是 ~~(x + )) ,完全通过加法和位运算搞定整数的四舍五入.在好奇心的驱使下重温了一下位运算,并对上述公式加以封装得到适合小数的四舍五入方法 function round(v/*alue*/, p/*recision*/){ p = Math.pow(, p>>> ? : p|) v *= p )|) / p } 在开波前…

algorithm & bitwise operation & the best leetcode solutions leetcode 136 single-number the better solution /** * @param {number[]} nums * @return {number} */ var singleNumber = function(nums) { return nums.reduce((sum, i) => sum ^ i, 0); }; //…

将随着时间不断增大的数字N个依次编号为1到N的N个球,颜色每次随机为红黑蓝,时间上先后逐个放入篮子中,计算离现在最近的24个球的红.黑.蓝颜色数 广告投放监控 a bitwise operation http://redis.io/commands/bitop http://blog.getspool.com/2011/11/29/fast-easy-realtime-metrics-using-redis-bitmaps/ BITOP operation destkey key [key ..…

1 Verilog 1.1 Bitwise operator Bitwise operators perform a bit wise operation on two operands. They take each bit in one operand and perform the operation with the corresponding bit in the other operand. If one operand is shorter than the other, it w…

js logical operation all in one 逻辑运算 Logical AND (&&) Logical AND assignment (&&=) Logical OR (||) Logical OR assignment (||=) Logical NOT (!) Logical nullish assignment (??=) Logical AND (&&) 逻辑与 Logical OR (||) 逻辑或 const a = 3; c…

js & bitwise operator bitwise operator https://github.com/Advanced-Frontend/Daily-Interview-Question/issues/161#issuecomment-521172471 https://github.com/xgqfrms/learn-javascript-with-mdn/issues/8 demo "use strict"; /** * * @author xgqfrms *…

首先第一点:十六进制位运算和逻辑运算 都是先转化二进制,后输出结果(十六进制,二或十)Bit-Wise Operations (位运算)包括:& 按位与 | 按位或 ^ 按位异或 ~ 取反 << 左移 >> 右移 直观一些的: 1. 按位与运算 按位与运算符"&"是双目运算符.其功能是参与运算的两数各对应的二进位相与.只有对应的两个二进位均为1时,结果位才为1 ,否则为0.参与运算的数以补码方式出现. 例如:9&5可写算式如下: 0000…

题意: Bob recently read about bitwise operations used in computers: AND, OR and XOR. He have studied their properties and invented a new game. Initially, Bob chooses integer m, bit depth of the game, which means that all numbers in the game will consis…

Description Given N integers A={A[0],A[1],...,A[N-1]}. Here we have some operations: Operation 1: AND opn L R Here opn, L and R are integers. For L≤i≤R, we do A[i]=A[i] AND opn (here "AND" is bitwise operation). Operation 2: OR opn L R Here opn,…