方法一：

import java.util.Scanner; public class Pyramid {public static void main(String[] args) {Scanner input = new Scanner(System.in);System.out.print("Enter the number of lines: ");int lines = input.nextInt();int CurrentLine,Space,num_left,num_right;for(CurrentLine=1;CurrentLine<=lines;CurrentLine++){for(Space=1;Space<=lines-CurrentLine;Space++)System.out.print(" ");for(num_left=CurrentLine;num_left>=1;num_left--)System.out.print(num_left);for(num_right=2;num_right<=CurrentLine;num_right++)System.out.print(num_right);System.out.println();}}}

運行結(jié)果：

方法二：

public class Pyramid {public static void main(String[] args) {Scanner input = new Scanner(System.in);System.out.print("Enter the number of lines: ");int lines = input.nextInt();int CurrentLine,Space,num_left,num_right;for(CurrentLine=1;CurrentLine<=lines;CurrentLine++){for(Space=1;Space<=lines-CurrentLine;Space++)System.out.print( " "); for(num_left=1;num_left<=Math.pow(2, CurrentLine-1);num_left*=2)System.out.print(num_left + " ");for(num_right=(int)(Math.pow(2, CurrentLine-2));num_right>=1;num_right/=2)System.out.print(num_right + " ");System.out.println();}}}

?

總結(jié)

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