String Equation = input.nextLine();
String[] number = Equation.split("\d+");
I want to split all digits come into string and dump into number. How'd do it?
like Equation is : 2x^4 - 45y^4
it should be dumped in number on index as : {2, 4 , 45, 4};
You can split on one or more non-digit characters - \\D+:
String[] number = equation.split("\\D+");
While working with Java regex, you need to double escape the \d, \D, so on. And please follow Java naming convention. Your variable should be named equation, not Equation.
What I'd do is String.replaceAll all non-digits with whitespace. Then String.split by whitespace.
package com.sandbox;
import java.util.Arrays;
public class Sandbox {
public static void main(String[] args) {
String input = "2x^4 - 45y^4";
input = input.replaceAll("\\D", " ");
String[] parts = input.split("\\W+");
System.out.println(Arrays.toString(parts));
}
}
This will print "[2, 4, 45, 4]"
Now that I understand @RohitJain's answer, it seems I'm including an unnecessary step. I guess I'll leave this here anyway since it does work, but I recommend his solution. His solution splits on all non digits. Since split excludes the delimiter, this also removes the non-digits.
\din java. Your code won't ocmpile.