JAVA循环+判断(三角·菱形)

*/
//空心金字塔
System.out.println("空心金字塔");
hollowPyramid();
System.out.print("★");
}
System.out.println();
}
}
System.out.print(" ");
}
//打印*规律
//1->1,2->3,3->5,4->7
for(int j=0;j<(i+1)*2-1;j++){
int layer=7;
for(int i=0;i<layer;i++){
if(i<layer/2+1){
//空格规律
//1->3,2->2,3->1,4->0
for(int k=0;k<layer/2+1-i;k++){
//7-4,5,6->3,2,1*2->6,4,2-1->5,3,1
for(int j=1;j<=(layer-i)*2-1;j++){
System.out.print("*");
public static void hollowPyramid(){
int x=7;
int y=2;
System.out.println("x/y:"+(x/y));
int layer=4;
System.out.print(" ");
}
for(int j=0;j<=i;j++)
{
System.out.print("★");
/*
*
* *
* *
* *
* *
* *
*
*/
}
//金字塔
//Full pyramid
public static void fullPyramid(){
//以下是我参考javaeye的例子所写
//半金字塔
/*
*
**
***
****
*/
int layer=4;
for(int i=1;i<=layer;i++){
}
Systபைடு நூலகம்m.out.println();
}
else{
for(int j=0;j<=i-4;j++)
/*
*
* *
* *
*******
*/
//菱形
System.out.println("菱形");
fullDiamond();
System.out.print("*");
}else{
System.out.print(" ");
}
for(int i=1;i<=layer;i++){
for(int k=1;k<=layer-i;k++){
System.out.print(" ");
}
for(int j=1;j<=(i-1)*2+1;j++){
{
System.out.print(" ");
}
for(int j=0;j<9-i;j++)
{
for(int i=0;i<9;i++)
{
if(i<5){
for(int j=0;j<5-i;j++)
{
for(int j=1;j<=i;j++){
System.out.print("*");
}
System.out.println();
java 打印半金字塔，金字塔，空心金字塔，空心菱形
Java代码
/**
*作者:huangbao
*日期:2010-06-21
*功能:打印半金字塔，金字塔，空心金字塔，空心菱形
*描述:半金字塔，金字塔，空心金字塔，空心菱形
*其它:Pyramid,Layer
if(i==1 || i==layer ){
System.out.print("*");
}else{
if(j==1 || j==(i-1)*2+1){
/*
*
***
*****
*******
*****
***
*
*/
//空心菱形
System.out.println("空心菱形");
hollowDiamond();
}else{
//4,5,6-3->1,2,3
for(int k=0;k<=i-(layer-(layer/2+1));k++){
System.out.print(" ");
try{
BufferedReader buf=new BufferedReader(new InputStreamReader(System.in));
System.out.println("请输入菱形的层数(>=3的整数):");
String hd=buf.readLine();
int layer=4;
for(int i=1;i<=layer;i++){
//空格规律
//1->3,2->2,3->1,4->0
for(int k=1;k<=layer-i;k++){
System.out.print("*");
}
System.out.println();
}
}
//空心金字塔
//Hollow pyramid
}
}
System.out.println();
}
}
//菱形
//full diamond
public static void fullDiamond(){
int layer=Integer.parseInt(hd);
//int layer=21;
if(layer%2==0)
}
//金字塔
System.out.println("金字塔");
fullPyramid();
/*
*
***
*****
*******
System.out.print("*");
}
System.out.println();
System.out.print(" ");
}
//打印*规律
//1->1,2->3,3->5,4->7
for(int j=1;j<=(i-1)*2+1;j++){
}
System.out.println();
}
}
}
//空心菱形
//Hollow diamond
public static void hollowDiamond(){
*/
import java.io.*;
public class Pyramid
{
public static void main(String[] args)
{
//这是javaeye上的一个例子
//菱形
}
//7-4,5,6,7->3,2,1,0-1->2,1,0,-1
//7-4,5,6,7->3,2,1,0+1->4,3,2,1*2->8,6,4,2-1->7,5,3,1
//6-4,5,6->2,1,0+1->3,2,1*2->6,4,2-1->5,3,1