java - 使用循环从字符串中删除空格

Question

大家好，我正在尝试专门使用循环来删除空格。这是我到目前为止所想到的

    import java.util.Scanner;
    public class Q2 {

public static void main(String[] args) {

    String input = "";
    char noSpace = ' ';

    Scanner scan = new Scanner(System.in);
    input = scan.nextLine();
    System.out.println(input);

    for (int i = 0; i < input.length(); i++) { //search from right to left
        for (int j = input.length(); j != -1; j--) { //search from left to right
            if (input.charAt(i) == noSpace) { //if there is a space move position of i and j
                i++;
                j--;
            }




    }
    System.out.println(input);

我对java还是很陌生，任何建议都会非常感谢!

Answer 1

试试这个:

public class RemoveWhiteSpace {

    public static void main(String[] args) {

        String str = "Hello World... Hai...             How are you?     .";
        for(Character c : str.toCharArray()) {
            if(!Character.isWhitespace(c)) // Check if not white space print the char
                System.out.print(c);
        }
    }
}