printpyramid.java

此源码为机械工业出版社出版的《Java语言程序设计》第三版所配套的书中所有源代码。

// PrintPyramid.java: Print a pyramid of numbers
public class PrintPyramid
{
  // Main method
  public static void main(String[] args)
  {
    for (int row = 1; row < 6; row++)
    {
      // Print leading spaces
      for (int column = 1; column < 6 - row; column++)
        System.out.print(" ");

      // Print leading numbers
      for (int num = row; num >= 1; num--)
        System.out.print(num);

      // Print ending numbers
      for (int num = 2; num <= row; num++)
        System.out.print(num);

      // Start a new line
      System.out.println();
    }
  }
}