fork download 
  1. class Ideone {
  2. 	public static void main (String[] args) {
  3. 		test("move these spaces to beginning");
  4. 		test("This is a test to see if it works ok.");
  5. 	}
  6. 	public static void test(String input) {
  7. 		System.out.printf("Input : '%s'%nOutput: '%s'%n%n",
  8. 		                  input, moveSpacesFirst(input));
  9. 	}
  10. 	public static String moveSpacesFirst(String input) {
  11. 		char[] buf = input.toCharArray();
  12. 		int to = buf.length - 1;
  13. 		for (int from = buf.length - 1; from >= 0; from--)
  14. 			if (buf[from] != ' ')
  15. 				buf[to--] = buf[from];
  16. 		while (to >= 0)
  17. 			buf[to--] = ' ';
  18. 		return new String(buf);
  19. 	}
  20. }
Success #stdin #stdout 0.1s 321280KB
comments (?)
stdin 
Standard input is empty
stdout 
Input : 'move these spaces to beginning'
Output: '    movethesespacestobeginning'

Input : 'This is a test to see if it works ok.'
Output: '         Thisisatesttoseeifitworksok.'
https://ideone.com/4MVNuQ
language:
Java (HotSpot 12)
created:
9 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!