本文目錄一覽：
怎樣用JAVA繪製一個菱形圖案
java 輸出菱形代碼：
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package demo;
public class Demo01 {
public static void main(String[] args) {
int i, j, k;
for (i = 1; i = 5; i++) {
for (j = 1; j = 5 – i; j++)
System.out.print(” “);
for (k = 1; k = 2 * i – 1; k++)
System.out.print(“*”);
System.out.println(“”);
}
for (i = 1; i = 4; i++) {
for (j = 1; j = i; j++)
System.out.print(” “);
for (k = 1; k = 9 – 2 * i; k++)
System.out.print(“*”);
System.out.println(“”);
}
}
}
繪製算法：
1、分為兩部分，上半部分和下半部分
2、輸出空格部分換個輸出*部分
3、最後一個標籤需要換行
如何用java編寫用 “*”輸出菱形？
參考下面主要代碼：
public static void draw()
{
int n=10;
for(int i=1;i=n;i++)//控制行數
{
for(int k=n-1;k=i;k–)//打印空格
{
System.out.print(” “);
}
for(int j=1;j=2*i-1;j++)//打印*
{
System.out.print(“*”);
}
System.out.println();
}
for(int i=n-1;i=1;i–)
{
for(int k=i;k=n-1;k++)
{
System.out.print(” “);
}
for(int j=1;j=2*i-1;j++)
{
System.out.print(“*”);
}
System.out.println();
}
}
怎麼用java打印菱形？
java打印菱形方法：
package circulationDemo;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
System.out.println(“請輸入要打印的行數：”);
int num = input.nextInt();
t1(num);// 正直角
split();
t2(num);// 倒直角
split();
t3(num);// 等腰三角
split();
t4(num);// 等腰倒三角++
split();
t5(num);// 等腰倒三角–
split();
t6(num);// 實心菱形
split();
t7(num);// 空心菱形(1)
split();
t8(num);// 空心菱形(2)
split();
t9(num);// 空心菱形(3)
}
private static void t9(int num) {
for (int k = 1; k = num; k++) {
for (int i = 1; i = (num – k); i++) {
System.out.print(” “);
}
System.out.print(“*”);
for (int i = 1; i = ((k – 2) * 2 + 1); i++) {
System.out.print(” “);
}
if (k != 1) {
System.out.print(“*”);
}
System.out.println();
}
for (int k = num-1; k = 1; k–) {
for (int i = 1; i = (num – k); i++) {
System.out.print(” “);
}
System.out.print(“*”);
for (int i = 1; i = ((k – 2) * 2 + 1); i++) {
System.out.print(” “);
}
if (k != 1) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void t8(int num) {
// 上半部分
for (int i = 1; i = num; i++) {
// 打印上半部分空格
for (int j = 1; j = num – i; j++) {
System.out.print(” “);
}
// 打印原本實心的*部分
for (int j = 1; j = 2 * i – 1; j++) {
// 僅在一行的開頭和末尾打印*
if (j == 1 || j == 2 * i – 1) {
System.out.print(“*”);
} else {
System.out.print(” “);
}
}
System.out.println();
}
// 下半部分
for (int i = 1; i = num – 1; i++) {
for (int j = 1; j = i; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * (num – i – 1) + 1; j++) {
if (j == 1 || j == 2 * (num – i – 1) + 1) {
System.out.print(“*”);
} else {
System.out.print(” “);
}
}
System.out.println();
}
}
private static void t7(int num) {
// 打印上半部分
for (int i = 1; i = num; i++) {
// 打印空格
for (int j = 1; j = (num – i); j++) {
System.out.print(” “);
}
// 打印*的個數
if (i == 1) {
System.out.print(“*”);
} else {
System.out.print(“*”);
// 打印菱形里的空格
for (int j = 1; j = (2 * i – 3); j++) {
System.out.print(” “);
}
System.out.print(“*”);
}
System.out.println();
}
// 打印下半部分
for (int i = num – 1; i 0; i–) {
// 打印空格
for (int j = 1; j = (num – i); j++) {
System.out.print(” “);
}
// 打印*的個數
if (i == 1) {
System.out.print(“*”);
} else {
System.out.print(“*”);
// 打印菱形里的空格
for (int j = 1; j = (2 * i – 3); j++) {
System.out.print(” “);
}
System.out.print(“*”);
}
System.out.println();
}
}
private static void t6(int num) {
// 上半部分
for (int i = 1; i = num; i++) {
for (int j = 1; j = num – i; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * i – 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
// 下半部分
for (int i = 1; i = num – 1; i++) {
for (int j = 1; j = i; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * (num – 1 – i) + 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void t5(int num) {
for (int i = num; i 0; i–) {
for (int j = 1; j = num – i; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * i – 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void t4(int num) {
for (int i = 1; i = num; i++) {
for (int j = 1; j = i – 1; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * (num – i) + 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void t3(int num) {
for (int i = 1; i = num; i++) {
for (int j = 1; j = num – i; j++) {
System.out.print(” “);
}
for (int j = 1; j = 2 * i – 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void split() {
System.out.println(“—————“);
}
private static void t2(int num) {
for (int i = 1; i = num; i++) {
for (int j = 1; j = num – i + 1; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
private static void t1(int num) {
for (int i = 1; i = num; i++) {
for (int j = 1; j = i; j++) {
System.out.print(“*”);
}
System.out.println();
}
}
}
如何用JAVA畫一個菱形
public class PrintDiamond2{
public static void main (String args[]){
int TotalLayer=9;
for(int layer=1; layer=TotalLayer; layer++) {
for(int space=1; space=Math.abs((TotalLayer+1)/2-layer); space++){
System.out.print(” “);
}
for(int b=1; b=TotalLayer-2*Math.abs((TotalLayer+1)/2-layer); b++){
System.out.print(“*”);
}
System.out.println();
}
}
}
用3個for循環打出菱形，可以改變TotalLayer的值來改變菱形的大小
第一個for循環規定多少行
第二個for循環規定每行有多少個空格
第三個for循環規定每行有多少個星號
然後換行，重複2,3循環直到完成第一個循環
最後菱形完成
原創文章，作者：WZTJ，如若轉載，請註明出處：https://www.506064.com/zh-hk/n/148298.html
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