怎么在C#中利用棧實(shí)現(xiàn)加減乘除運(yùn)算
這期內(nèi)容當(dāng)中小編將會(huì)給大家?guī)?lái)有關(guān)怎么在C#中利用棧實(shí)現(xiàn)加減乘除運(yùn)算，文章內(nèi)容豐富且以專業(yè)的角度為大家分析和敘述，閱讀完這篇文章希望大家可以有所收獲。
陽(yáng)西ssl適用于網(wǎng)站、小程序/APP、API接口等需要進(jìn)行數(shù)據(jù)傳輸應(yīng)用場(chǎng)景，ssl證書(shū)未來(lái)市場(chǎng)廣闊！成為創(chuàng)新互聯(lián)公司的ssl證書(shū)銷售渠道，可以享受市場(chǎng)價(jià)格4-6折優(yōu)惠！如果有意向歡迎電話聯(lián)系或者加微信：028-86922220（備注：SSL證書(shū)合作）期待與您的合作！
類Parser 的parse方法，比如給一個(gè)“3+4i”的字符串，返回給你一個(gè)3個(gè)結(jié)點(diǎn)的隊(duì)，隊(duì)列第一個(gè)元素是一個(gè)ComplexNumber對(duì)象，實(shí)數(shù)域?yàn)?，隊(duì)列的第二個(gè)元素是“+”號(hào)，隊(duì)列第三個(gè)元素是一個(gè)ComplexNumber對(duì)象，實(shí)數(shù)域?yàn)?,虛數(shù)域?yàn)?。
類Operators 用于測(cè)試字符是否是運(yùn)算符，用來(lái)進(jìn)行控制運(yùn)算，比較運(yùn)算符優(yōu)先級(jí)....
類Handler 給一個(gè)字符串，他幫你處理，返回給你一個(gè)結(jié)果。其實(shí)就是調(diào)一下Parser類的方法去解析一下字符串，然后算一下結(jié)果，然后返回結(jié)果。
類ComplexNumber，就是復(fù)數(shù)類啊，不用說(shuō)了，提供實(shí)數(shù)域虛數(shù)域，getset方法，加減乘除以及toString()方法
using System;
using System.Collections;
using System.Text;
namespace MySpace{
class Parser{
public static Queue Parse(string input){
char[] arr = input.ToCharArray();
Queue queue = new Queue();
foreach(char x in arr){
queue.Enqueue(x);
}
queue = ParseStringQueue(queue);
return queue;
}
//傳入字符串隊(duì)列，返回封裝好的隊(duì)列。
//ComplexNumber對(duì)象或char類型運(yùn)算符各占用一個(gè)結(jié)點(diǎn)
private static Queue ParseStringQueue(Queue queue){
Queue secondQ = new Queue();
char c;
StringBuilder sb = null;
string temp;
int count = queue.Count;
bool flag = false; //false表示允許創(chuàng)建新SB對(duì)象進(jìn)行緩存數(shù)字字符串
for(int i=0;i<count;i++){
c = (char)queue.Dequeue();
if(!Operators.Contains(c)){
//如果掃描到的不是運(yùn)算符，則將其加入到buffer尾部
if(!flag){
flag = true;
sb = new StringBuilder();
}
sb.Append(c);
}
if(Operators.Contains(c) || queue.Count == 0){
//如果掃描到的是運(yùn)算符，則將緩沖區(qū)中的串加入隊(duì)尾
if(sb != null && flag == true){
temp = sb.ToString();
try{
if(temp.EndsWith("i")){
if(temp.Length==1){
secondQ.Enqueue(new ComplexNumber(0,1));
}else{
//i前有數(shù)字則開(kāi)出數(shù)字部分。
temp = temp.Substring(0,temp.Length-1);
secondQ.Enqueue(new ComplexNumber(0,double.Parse(temp)));
}
}else{
secondQ.Enqueue(new ComplexNumber(double.Parse(temp),0));
}
sb = null;
flag = false;
}catch(Exception e){
Console.WriteLine("Error");
}
}
//如果是運(yùn)算符，則最后將運(yùn)算符放入隊(duì)。
if(Operators.Contains(c)){
secondQ.Enqueue(c);
}
}
}
return secondQ;
}
}
class ComplexNumber{
private double m_dRealPart;
private double m_dImaginPart;
public ComplexNumber(){
m_dRealPart = 0.0;
m_dImaginPart = 0.0;
}
public ComplexNumber(double r,double i){
m_dRealPart = r;
m_dImaginPart = i;
}
public ComplexNumber(ComplexNumber c){
m_dRealPart = c.GetRealPart();
m_dImaginPart = c.GetImaginaryPart();
}
//get,set方法
public double GetRealPart(){
return m_dRealPart;
}
public double GetImaginaryPart(){
return m_dImaginPart;
}
public void SetRealPart(double d){
m_dRealPart = d;
}
public void SetImaginaryPart(double d){
m_dImaginPart = d;
}
public ComplexNumber ComplexAdd(ComplexNumber c){
return new ComplexNumber(this.m_dRealPart + c.GetRealPart(),this.m_dImaginPart + c.GetImaginaryPart());
}
public ComplexNumber ComplexAdd(double c){
return new ComplexNumber(
this.m_dRealPart + c,
this.m_dImaginPart);
}
public ComplexNumber ComplexMinus(ComplexNumber c){
return new ComplexNumber(this.m_dRealPart - c.GetRealPart(),this.m_dImaginPart - c.GetImaginaryPart());
}
public ComplexNumber ComplexMinus(double c){
return new ComplexNumber(this.m_dRealPart - c, this.m_dImaginPart);
}
//乘
public ComplexNumber ComplexMulti(ComplexNumber c){
return new ComplexNumber(
this.m_dRealPart * c.GetRealPart()
- this.m_dImaginPart * c.GetImaginaryPart(),
this.m_dRealPart *
c.GetImaginaryPart()
+ this.m_dImaginPart *
c.GetRealPart());
}
public ComplexNumber ComplexMulti(double c){
return
new ComplexNumber(
this.m_dRealPart * c,
this.m_dImaginPart * c);
}
//除
public ComplexNumber ComplexDivision(ComplexNumber c){
return
new ComplexNumber((this.m_dRealPart*c.GetRealPart()
+this.m_dImaginPart*c.GetImaginaryPart())/(c.GetRealPart()*c.GetRealPart()+c.GetImaginaryPart()*c.GetImaginaryPart())
,(this.m_dImaginPart*c.GetRealPart()-this.m_dRealPart*c.GetImaginaryPart())
/(c.GetRealPart()*c.GetRealPart()+c.GetImaginaryPart()*c.GetImaginaryPart()));
}
public ComplexNumber ComplexDivision(double c){
return new
ComplexNumber(this.m_dRealPart/c,this.m_dImaginPart/c);
}
public override String ToString(){
return "(" + m_dRealPart + " + " + m_dImaginPart + " i" + ")";
}
}
class Operators{
static char[][] signOperator;
static Operators(){
signOperator = new char[3][];
signOperator[0] = new char[2];
signOperator[0][0]='*';
signOperator[0][1]='/';
signOperator[1] = new char[2];
signOperator[1][0]='+';
signOperator[1][1]='-';
signOperator[2] = new char[2];
signOperator[2][0]='(';
signOperator[2][1]=')';
}
public static int ComparePriority(char firstSign,char secondSign){
int priorityF = 0,priorityS = 0;
for(int i = 0; i<signOperator.Length;i++){
foreach(char x in signOperator[i]){
if(firstSign == x){
priorityF = i;
}
if(secondSign == x){
priorityS = i;
}
}
}
return (priorityF-priorityS);
}
public static bool Contains(char x){
foreach(char[] arr in signOperator){
foreach(char y in arr){
if(x == y){
return true;
}
}
}
return false;
}
public static ComplexNumber Compute(char ope,ComplexNumber c1,ComplexNumber c2){
ComplexNumber result = null;
switch(ope){
case '+':result=c1.ComplexAdd(c2);break;
case '-':result=c2.ComplexMinus(c1);break;
case '*':result=c1.ComplexMulti(c2);break;
case '/':result=c1.ComplexDivision(c2);break;
}
return result;
}
}
class Handler{
private Stack complexNumberStack = new Stack();
private Stack operatorStack = new Stack();
private static Handler handler = new Handler();
private Handler(){}
public static Handler GetHandler(){
return handler;
}
public ComplexNumber Process(string inputString){
Queue queue = Parser.Parse(inputString);
ComplexNumber complexNumber = null;
char c,top,ct;
int count = queue.Count;
for(int i=0;i<count;i++){
Object obj = queue.Dequeue();
if(obj is char){
c = (char)obj;
if(operatorStack.Count == 0){
operatorStack.Push(c);
}else{
top = (char)operatorStack.Peek();
if(c=='('){
operatorStack.Push(c); //左括號(hào)直接壓入。不判斷棧頂
}else if(c==')'){
//右括號(hào)壓入前觀察棧頂，若棧頂是左括號(hào)，則彈出棧頂?shù)淖罄ㄌ?hào)
//否則彈出棧頂運(yùn)算符，從數(shù)棧中彈出操作數(shù)進(jìn)行運(yùn)算，并將結(jié)果重新壓入數(shù)棧，直到遇到左括號(hào)
while((ct=(char)operatorStack.Pop())!='('){
ComplexNumber c1 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c2 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c3 = Operators.Compute(ct,c1,c2);
complexNumberStack.Push(c3);
}
}else if(Operators.ComparePriority(top,c)<0){
//若即將壓入的運(yùn)算符不是括號(hào)，則比較棧頂運(yùn)算符和即將壓入的運(yùn)算符的優(yōu)先級(jí)
//如果棧頂優(yōu)先級(jí)高，則將棧頂運(yùn)算符取出運(yùn)算，直到棧頂優(yōu)先級(jí)不大于其。
while(Operators.ComparePriority((char)operatorStack.Peek(),c)<0){
ComplexNumber c1 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c2 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c3 = Operators.Compute((char)operatorStack.Pop(),c1,c2);
complexNumberStack.Push(c3);
operatorStack.Push(c);
}
}else{
operatorStack.Push(c);
}
}
}else if(obj is ComplexNumber) {
complexNumber = (ComplexNumber)obj;
complexNumberStack.Push(complexNumber);
}
if(queue.Count == 0){
if(operatorStack.Count != 0){
while(operatorStack.Count != 0){
c = (char)operatorStack.Pop();
ComplexNumber c1 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c2 = (ComplexNumber)complexNumberStack.Pop();
ComplexNumber c3 = Operators.Compute(c,c1,c2);
complexNumberStack.Push(c3);
}
}
}
}
return (ComplexNumber)complexNumberStack.Pop();
}
}
class PrimeClass{
static void Main(string[] args){
String input;
Handler handler = Handler.GetHandler();
while(!(input = Console.ReadLine()).Equals("END")){
ComplexNumber c = (ComplexNumber)handler.Process(input);
Console.WriteLine(c);
};
}
}
}Don_Yao整合修復(fù)一些bug后的代碼
using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
// 解析計(jì)算字符串公式
namespace CalcuStrFormula
{
// 處理類
class Handler
{
private Stack _complexNumberStack = new Stack();
private Stack _operatorStack = new Stack();
private Parser _parser = new Parser();
private Operators _operators = new Operators();
private static Handler _instance;
public static Handler instance
{
get
{
if (_instance == null)
{
_instance = new Handler();
}
return _instance;
}
}
public ComplexNumber Process(string inputString)
{
_complexNumberStack.Clear();
_operatorStack.Clear();
Queue<object> queue = _parser.Parse(inputString);
ComplexNumber complexNumber = null;
char op, topOp;
int count = queue.Count;
for (int i = 0; i < count; i++)
{
object obj = queue.Dequeue();
if (obj is char)
{
op = (char)obj;
if (_operatorStack.Count == 0)
{
_operatorStack.Push(op);
}
else
{
topOp = (char)_operatorStack.Peek();
if (op == '(')
{
_operatorStack.Push(op); // 左括號(hào)直接壓入。不判斷棧頂
}
else if (op == ')')
{
// 右括號(hào)壓入前觀察棧頂，若棧頂是左括號(hào)，則彈出棧頂?shù)淖罄ㄌ?hào)
// 否則彈出棧頂運(yùn)算符，從數(shù)棧中彈出操作數(shù)進(jìn)行運(yùn)算，并將結(jié)果重新壓入數(shù)棧，直到遇到左括號(hào)
while ((topOp = (char)_operatorStack.Pop()) != '(')
{
ComplexNumber c1 = (ComplexNumber)_complexNumberStack.Pop(); // 符號(hào)右邊數(shù)
ComplexNumber c2 = null; // 符號(hào)左邊數(shù)
if (_operators.IsTwoNumOperator(topOp))
{
c2 = (ComplexNumber)_complexNumberStack.Pop();
}
ComplexNumber c3 = _operators.Compute(topOp, c2, c1);
_complexNumberStack.Push(c3);
}
}
else if (_operators.ComparePriority(topOp, op) <= 0)
{
// 若即將壓入的運(yùn)算符不是括號(hào)，則比較棧頂運(yùn)算符和即將壓入的運(yùn)算符的優(yōu)先級(jí)
// 如果棧頂優(yōu)先級(jí)高，則將棧頂運(yùn)算符取出運(yùn)算，直到棧頂優(yōu)先級(jí)不大于其。
while (_operatorStack.Count != 0 && _operators.ComparePriority((char)_operatorStack.Peek(), op) <= 0)
{
topOp = (char)_operatorStack.Pop();
ComplexNumber c1 = (ComplexNumber)_complexNumberStack.Pop(); // 符號(hào)右邊數(shù)
ComplexNumber c2 = null; // 符號(hào)左邊數(shù)
if (_operators.IsTwoNumOperator(topOp))
{
c2 = (ComplexNumber)_complexNumberStack.Pop();
}
ComplexNumber c3 = _operators.Compute(topOp, c2, c1);
_complexNumberStack.Push(c3);
}
_operatorStack.Push(op);
}
else
{
_operatorStack.Push(op);
}
}
}
else if (obj is ComplexNumber)
{
complexNumber = (ComplexNumber)obj;
_complexNumberStack.Push(complexNumber);
}
if (queue.Count == 0)
{
while (_operatorStack.Count != 0)
{
topOp = (char)_operatorStack.Pop();
ComplexNumber c1 = (ComplexNumber)_complexNumberStack.Pop(); // 符號(hào)右邊數(shù)
ComplexNumber c2 = null; // 符號(hào)左邊數(shù)
if (_operators.IsTwoNumOperator(topOp))
{
c2 = (ComplexNumber)_complexNumberStack.Pop();
}
ComplexNumber c3 = _operators.Compute(topOp, c2, c1);
_complexNumberStack.Push(c3);
}
}
}
return (ComplexNumber)_complexNumberStack.Pop();
}
}
// 3+4i解析成Queue包含 3, +, 4i
public class Parser
{
private Operators _operators = new Operators();
public Queue<object> Parse(string input)
{
input = input.Replace(" ", "");
if (input.StartsWith("-")) input = '0' + input;
char[] arr = input.ToCharArray();
Queue<char> queueChar = new Queue<char>();
foreach (char x in arr)
{
queueChar.Enqueue(x);
}
Queue<object> queueResult = ParseStringQueue(queueChar);
return queueResult;
}
// 傳入字符串隊(duì)列，返回封裝好的隊(duì)列。
// ComplexNumber對(duì)象或char類型運(yùn)算符各占用一個(gè)結(jié)點(diǎn)
private Queue<object> ParseStringQueue(Queue<char> queue)
{
Queue<object> secondQ = new Queue<object>();
char c;
StringBuilder sb = null;
string temp;
int count = queue.Count;
bool flag = false; // false表示允許創(chuàng)建新SB對(duì)象進(jìn)行緩存數(shù)字字符串
for (int i = 0; i < count; i++)
{
c = queue.Dequeue();
if (!_operators.Contains(c))
{
// 如果掃描到的不是運(yùn)算符，則將其加入到buffer尾部
if (!flag)
{
flag = true;
sb = new StringBuilder();
}
sb.Append(c);
}
if (_operators.Contains(c) || queue.Count == 0)
{
// 如果掃描到的是運(yùn)算符，則將緩沖區(qū)中的串加入隊(duì)尾
if (sb != null && flag == true)
{
temp = sb.ToString();
try
{
if (temp.EndsWith("i"))
{
if (temp.Length == 1)
{
secondQ.Enqueue(new ComplexNumber(0, 1));
}
else
{
// i前有數(shù)字則開(kāi)出數(shù)字部分。
temp = temp.Substring(0, temp.Length - 1);
secondQ.Enqueue(new ComplexNumber(0, double.Parse(temp)));
}
}
else
{
secondQ.Enqueue(new ComplexNumber(double.Parse(temp), 0));
}
sb = null;
flag = false;
}
catch (Exception e)
{
UnityEngine.Debug.Log("Error " + e.ToString());
}
}
// 如果是運(yùn)算符，則最后將運(yùn)算符放入隊(duì)。
if (_operators.Contains(c))
{
secondQ.Enqueue(c);
}
}
}
return secondQ;
}
}
// 復(fù)數(shù)類，提供實(shí)數(shù)域虛數(shù)域，getset方法，加減乘除以及toString()方法
class ComplexNumber
{
private double _realPart; // 實(shí)數(shù)部分
private double _imaginPart; // 虛數(shù)部分
public ComplexNumber()
{
_realPart = 0.0;
_imaginPart = 0.0;
}
public ComplexNumber(double r, double i)
{
_realPart = r;
_imaginPart = i;
}
public ComplexNumber(ComplexNumber c)
{
_realPart = c.GetRealPart();
_imaginPart = c.GetImaginaryPart();
}
// get,set方法
public double GetRealPart()
{
return _realPart;
}
public double GetImaginaryPart()
{
return _imaginPart;
}
public void SetRealPart(double d)
{
_realPart = d;
}
public void SetImaginaryPart(double d)
{
_imaginPart = d;
}
// 加
public ComplexNumber ComplexAdd(ComplexNumber c)
{
return new ComplexNumber(_realPart + c.GetRealPart(), _imaginPart + c.GetImaginaryPart());
}
public ComplexNumber ComplexAdd(double c)
{
return new ComplexNumber(_realPart + c, _imaginPart);
}
// 減
public ComplexNumber ComplexMinus(ComplexNumber c)
{
return new ComplexNumber(_realPart - c.GetRealPart(), _imaginPart - c.GetImaginaryPart());
}
public ComplexNumber ComplexMinus(double c)
{
return new ComplexNumber(_realPart - c, _imaginPart);
}
// 乘
public ComplexNumber ComplexMulti(ComplexNumber c)
{
return new ComplexNumber(
_realPart * c.GetRealPart()
- _imaginPart * c.GetImaginaryPart(),
_realPart *
c.GetImaginaryPart()
+ _imaginPart *
c.GetRealPart());
}
public ComplexNumber ComplexMulti(double c)
{
return new ComplexNumber(_realPart * c, _imaginPart * c);
}
// 除
public ComplexNumber ComplexDivision(ComplexNumber c)
{
return new ComplexNumber((_realPart * c.GetRealPart() + _imaginPart * c.GetImaginaryPart())
/ (c.GetRealPart() * c.GetRealPart() + c.GetImaginaryPart() * c.GetImaginaryPart())
, (_imaginPart * c.GetRealPart() - _realPart * c.GetImaginaryPart())
/ (c.GetRealPart() * c.GetRealPart() + c.GetImaginaryPart() * c.GetImaginaryPart()));
}
public ComplexNumber ComplexDivision(double c)
{
return new ComplexNumber(_realPart / c, _imaginPart / c);
}
// 冪
public ComplexNumber ComplexPow(ComplexNumber c)
{
int pow;
if (int.TryParse(c.GetRealPart().ToString(), out pow))
{
ComplexNumber origin = new ComplexNumber(this);
ComplexNumber multi = new ComplexNumber(this);
for (int i = 0; i < pow - 1; i++)
{
origin = origin.ComplexMulti(multi);
}
return origin;
}
else
{
return ComplexPow(c.GetRealPart());
}
}
public ComplexNumber ComplexPow(double c)
{
return new ComplexNumber(Math.Pow(_realPart, c), 0.0);
}
// 最小值
public ComplexNumber ComplexMinimum(ComplexNumber c)
{
if (_realPart <= c.GetRealPart()) return this;
return c;
}
// 最大值
public ComplexNumber ComplexMaximum(ComplexNumber c)
{
if (_realPart >= c.GetRealPart()) return this;
return c;
}
// 轉(zhuǎn)int
public ComplexNumber ToFloorInt()
{
_realPart = Math.Floor(_realPart);
return this;
}
public override string ToString()
{
return "(" + _realPart + " + " + _imaginPart + " i" + ")";
}
}
// 操作符類
class Operators
{
private char[][] _signOperator;
public Operators()
{
// 從上到下，優(yōu)先級(jí)由高到低
_signOperator = new char[4][];
_signOperator[0] = new char[4];
_signOperator[0][0] = '^';
_signOperator[0][1] = 's'; // 最小值
_signOperator[0][2] = 'b'; // 最大值
_signOperator[0][3] = 'i'; // int值
_signOperator[1] = new char[2];
_signOperator[1][0] = '*';
_signOperator[1][1] = '/';
_signOperator[2] = new char[2];
_signOperator[2][0] = '+';
_signOperator[2][1] = '-';
_signOperator[3] = new char[2];
_signOperator[3][0] = '(';
_signOperator[3][1] = ')';
}
// 比較操作符優(yōu)先級(jí)
public int ComparePriority(char firstSign, char secondSign)
{
int priorityF = 0, priorityS = 0;
for (int i = 0; i < _signOperator.Length; i++)
{
foreach (char x in _signOperator[i])
{
if (firstSign == x)
{
priorityF = i;
}
if (secondSign == x)
{
priorityS = i;
}
}
}
return (priorityF - priorityS);
}
// 是否是需要兩個(gè)參數(shù)的操作符
public bool IsTwoNumOperator(char op)
{
if (op == 'i') return false;
return true;
}
public bool Contains(char x)
{
if (x == '（' || x == '）')
{
UnityEngine.Debug.LogError(x + "為中文字符，請(qǐng)改為英文字符");
}
foreach (char[] arr in _signOperator)
{
foreach (char y in arr)
{
if (x == y)
{
return true;
}
}
}
return false;
}
public ComplexNumber Compute(char op, ComplexNumber c1, ComplexNumber c2)
{
ComplexNumber result = null;
switch (op)
{
case '+': result = c1.ComplexAdd(c2); break;
case '-': result = c1.ComplexMinus(c2); break;
case '*': result = c1.ComplexMulti(c2); break;
case '/': result = c1.ComplexDivision(c2); break;
case '^': result = c1.ComplexPow(c2); break;
case 's': result = c1.ComplexMinimum(c2); break;
case 'b': result = c1.ComplexMaximum(c2); break;
case 'i': result = c2.ToFloorInt(); break;
}
return result;
}
}
}上述就是小編為大家分享的怎么在C#中利用棧實(shí)現(xiàn)加減乘除運(yùn)算了，如果剛好有類似的疑惑，不妨參照上述分析進(jìn)行理解。如果想知道更多相關(guān)知識(shí)，歡迎關(guān)注創(chuàng)新互聯(lián)行業(yè)資訊頻道。
網(wǎng)站名稱：怎么在C#中利用棧實(shí)現(xiàn)加減乘除運(yùn)算
本文地址：http://aaarwkj.com/article14/iihjge.html
成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供網(wǎng)站制作、自適應(yīng)網(wǎng)站、用戶體驗(yàn)、虛擬主機(jī)、網(wǎng)頁(yè)設(shè)計(jì)公司、App設(shè)計(jì)
聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請(qǐng)盡快告知，我們將會(huì)在第一時(shí)間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng)，如需處理請(qǐng)聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時(shí)需注明來(lái)源： 創(chuàng)新互聯(lián)
- 網(wǎng)站關(guān)鍵詞優(yōu)化是先首頁(yè)還是先內(nèi)頁(yè) 2022-08-24
- SEO整站優(yōu)化與關(guān)鍵詞優(yōu)化的區(qū)別 2017-02-10
- 企業(yè)做關(guān)鍵詞優(yōu)化的重要性! 2015-05-27
- 【視頻教程】區(qū)域型關(guān)鍵詞優(yōu)化教程 2022-05-25
- 淺析關(guān)鍵詞優(yōu)化技巧 2016-10-09
- 關(guān)鍵詞優(yōu)化如何做才合理 2021-11-25
- 網(wǎng)絡(luò)推廣除關(guān)鍵詞優(yōu)化外，還有哪些渠道或方式 2023-04-27
- 論SEO關(guān)鍵詞優(yōu)化的重要性! 2014-01-15
- 通過(guò)搜索引擎優(yōu)化優(yōu)劣勢(shì)，總結(jié)關(guān)鍵詞優(yōu)化注意 2014-03-30
- SEO關(guān)鍵詞優(yōu)化技巧 2015-03-24
- 企業(yè)網(wǎng)站seo關(guān)鍵詞優(yōu)化技巧思維 2023-04-01
- 機(jī)械企業(yè)網(wǎng)站關(guān)鍵詞優(yōu)化如何選擇 2021-08-24