number-systems

问题 What is 2's Complement Number? Why do we take 1's Complement and add 1 to it? Why don't we subtract 1 after taking 1's Complement? Why do computers use 2's Complement? 回答1: What is 2's Complement Number? Complementary number system is used to represent negative numbers. So, 2's Complement number system is used to represent negative numbers. UPDATE Q: What “2’s Complement System” says? A: The negative equivalent of binary number is its 2’s complement. (1’s Complement + 1) Note: 1 extra bit is

问题 I have the following code to display in Indian numbering system. var x=125465778; var res= x.toString().replace(/\\B(?=(\\d{3})+(?!\\d))/g, \",\"); Am getting this output : 125,465,778 . I need output like this: 12,54,65,778 . Please help me to sort out this problem . 回答1: For Integers: var x=12345678; x=x.toString(); var lastThree = x.substring(x.length-3); var otherNumbers = x.substring(0,x.length-3); if(otherNumbers != '') lastThree = ',' + lastThree; var res = otherNumbers.replace(/\B(?=(

问题 I have and old(ish) C# method I wrote that takes a number and converts it to any base: string ConvertToBase(int number, char[] baseChars); It\'s not all that super speedy and neat. Is there a good, known way of achieving this in .NET? I\'m looking for something that allows me to use any base with an arbitrary string of characters to use. This only allows bases 16, 10, 8 and 2: Convert.ToString(1, x); I want to use this to achieve a massively high base taking advantage of numbers, all lower