OJ daily practice - filter extra spaces

Problem description ：

There may be multiple consecutive spaces in a sentence , Filter out the extra space , Just leave a space .

Input
a line , A string （ Length not exceeding 200）, There are no spaces at the beginning and the end of a sentence .

Output
Filtered sentences .

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Java Code ：

import java.util.Scanner;
public class Main {
    
	public static void main(String[] args) {
    
		Scanner in=new Scanner(System.in);
		String a=in.nextLine();
		String b=a.replaceAll("\\s+"," ");
		String c[]=b.split(" ");
		for(int i=0;i<c.length;i++) {
    
			System.out.print(c[i]+" ");
		}
	}
}

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author ：KJ.JK
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