JAVA basic programming exercises program [19] 19 print diamond pattern

 

[19] diamond pattern printing program 19

Title: Print out the following pattern (diamonds)

      *
    ***
  *****
*******
  *****
    ***
      *

Analysis procedure: first to look pattern divided into two parts, the first four lines of a rule, a rule of the three lines, for using a double loop, a first control line layer, the second layer controls the column.

 

package cskaoyan;

public class cskaoyan19 {
	@org.junit.Test
	public void rhombus() {
		for (int i = 0; i < 4; i++) {
			for (int j = 0; j <= 2 - i; j++) {
				System.out.print(" ");
			}

			for (int k = 0; k <= 2 * i; k++) {
				System.out.print("*");
			}

			System.out.println();
		}

		for (int i = 0; i < 3; i++) {
			for (int j = 0; j <= i; j++) {
				System.out.print(" ");
			}

			for (int k = 0; k <= 4 - 2 * i; k++) {
				System.out.print("*");
			}

			System.out.println();
		}
	}
}