import java.util.Arrays;

public class Solution
{
  public String[] zigzag(String text, int rows) {
    boolean down = true;
    String[] lines = new String[rows];
    Arrays.fill(lines, "");

    int print = 0;
    for (int i = 0; i < text.length(); i++) {
      for (int j = 0; j < rows; j++) {
        if (j == print) {
          lines[j] += text.charAt(i);
        } else {
          lines[j] += " ";
        }
      }

      if (down) {
        if ( (print + 1) >= rows ) {
          down = false;
          print--;
        } else {
          print++;
        }
      } else {
        if ( (print - 1) < 0 ) {
          down = true;
          print++;
        } else {
          print--;
        }
      }
    }

    return lines;
  }

  public static void main(String[] args)
  {
    Solution solution = new Solution();
    String[] lines = solution.zigzag("thisdemoofasuperlongtext", 4);
    for (int i = 0; i < lines.length; i++) {
      System.out.println(lines[i]);
    }
  }
}