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Commit 5a1c2aa

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6 files changed

+68
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‎BitManipulation/BitManipulation.suo‎

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‎BitManipulation/BitManipulation/BitManipulation.csproj‎

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</ItemGroup>
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<ItemGroup>
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<Compile Include="HammingDistanceSln.cs" />
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<Compile Include="NumberComplementSln.cs" />
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<Compile Include="PowOfFourSln.cs" />
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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/* ==============================================================================
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* 功能描述:NumberComplementSln
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* 创 建 者:gz
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* 创建日期:2017年6月2日 13:48:57
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* ==============================================================================*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics.CodeAnalysis;
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using System.Linq;
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using System.Text;
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namespace BitManipulation
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{
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/// <summary>
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///#476 NumberComplementSln
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/// </summary>
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public class NumberComplementSln
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{
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public int FindComplement(int num)
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{
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int bits = 1; //num including bits
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while (Math.Pow(2, bits) <= num)
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bits++;
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int sum = (int) Math.Pow(2, bits) - 1;//sum =Pow(2,n)-1: sum of n bits 1
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return sum - num; //sum - num is the complement
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}
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}
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}

‎BitManipulation/BitManipulation/Program.cs‎

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{
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static void Main(string[] args)
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{
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HammingDistanceSln sln = new HammingDistanceSln();
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int d = sln.HammingDistance(1,8);
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NumberComplementSln sln = new NumberComplementSln();
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int n = sln.FindComplement(6);
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}
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}
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}

‎TodayUpdate.md‎

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https://github.com/jackzhenguo/LeetCodeManager
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## Bit Mainpulation
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### 461 Hamming Distance
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* [CSDN:#461 Hamming Distance](http://blog.csdn.net/daigualu/article/details/72830624)
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> x&(x-1) application; xor application</br>
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* [CSDN:#476 Number Complement](http://blog.csdn.net/daigualu/article/details/72843822)
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> get bits for a number</br>
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```C#
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public int HammingDistance(int x, inty)
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public int FindComplement(int num)
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{
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///a and y are different bits, so we think the XOR
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///think:0001(1D)
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/// 0100(4D)
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///xor = 0101(1D^4D)
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int dist = 0, xor = x ^ y;
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while (xor > 0)
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{
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///xor & (xor-1): it sets the rightest 1 bit to 0 bit of xor.
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++dist;
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xor = xor & (xor - 1);
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}
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return dist;
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int bits = 1; //num including bits
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while (Math.Pow(2, bits) <= num)
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bits++;
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int sum = (int) Math.Pow(2, bits) - 1;//sum =Pow(2,n)-1: sum of n bits 1
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return sum - num; //sum - num is the complement
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}
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```C#

‎UpdateHistory.md‎

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### 342 Power of Four
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* [Github:#342 Power of Four](/BitManipulation/PowOfFourSln.cs)
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* [CSDN:#342 Power of Four](http://blog.csdn.net/daigualu/article/details/72821233)
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# `Today Update`
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(Notes: "&hearts;" Welcome to visit or fork or star my LeetCode Manager @
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https://github.com/jackzhenguo/LeetCodeManager
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## Bit Mainpulation
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### 461 Hamming Distance
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* [CSDN:#461 Hamming Distance](http://blog.csdn.net/daigualu/article/details/72830624)
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> x&(x-1) application; xor application</br>
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```C#
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public int HammingDistance(int x, int y)
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{
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///a and y are different bits, so we think the XOR
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///think:0001(1D)
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/// 0100(4D)
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///xor = 0101(1D^4D)
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int dist = 0, xor = x ^ y;
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while (xor > 0)
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{
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///xor & (xor-1): it sets the rightest 1 bit to 0 bit of xor.
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++dist;
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xor = xor & (xor - 1);
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}
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return dist;
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}
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```C#

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