[英]how to split this string by using regex?
I want to split this String: 我想分割这个字符串:
5+(4/2)-4+1+(4%3)!=23+(3*5)
into a list , using regex
. 使用regex
进入列表。
The output should be: 输出应为:
[5 , + , ( , 4 , / , 2 , ) , - , 4 , + , 1 , + , ( , 4 , % , 3 , != , 23 , + , ( , 3 , * , 5 , ) ]
NOTE : My problem exactly is with the not equal
operator , the regex
does not consider it as a single character 注意:我的问题完全是not equal
运算符, regex
不将其视为单个字符
Please try this one 请试试这个
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(String[] args) {
String s="5+(4/2)-4+1+(4%3)!=23+(3*5)";
String s3 = "";
char c = 0;
List a1 = new ArrayList();
for(int i=0;i<s.length();i++)
{
char temp=c;
c=s.charAt(i);
String s1= Character.toString(c);
String s2= Character.toString(temp);
if((s1.equals("=") && s2.matches("!")))
{
s1=s2+s1;
a1.add(s1);
}
else if(s1.matches("[0-9]+") ||(s1.equals("+") ||s1.equals("-") ||s1.equals("*") ||s1.equals("/") ||s1.equals("%")||s1.equals("(")||s1.equals(")")) )
{
if(s1.matches("[0-9]+") )
{
s3=s3+s1;
}
else if(s1.equals("+") ||s1.equals("-") ||s1.equals("*") ||s1.equals("/") ||s1.equals("%") ||s1.equals("(") ||s1.equals(")") )
{
if(s3!="")
{
a1.add(s3);
}
a1.add(s1);
s3="";
}
}
}
System.out.println(a1);
}
}
Hope it could help you! 希望它能对您有所帮助!
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