1. for語句 輸出心形（java）
代碼如下： public class Demo7 { public static void main(String[] args){ int i=0,j=0; for(i=1;i<=3;i++){ for(j=1;j<=3-i;j++){ System.out.print（" ")； //上左空格 } System.out.print(" * "); for(j=1;j<=2*i-3;j++){ System.out.print（" ")； //上左心 } if(i!=1){ System.out.print(" * "); } for(j=5;j>2*i-2;j--){ System.out.print（" ")；//上中空格 } System.out.print(" * "); for(j=1;j<=2*i-3;j++){ System.out.print（" ")； //上右心 } if(i!=1){ System.out.print(" * "); } System.out.println(); } for(i=1;i<=3;i++){ if(i==2){ System.out.print(" *"); } for(j=1;j<=11;j++){ if(i==1&&j==7){ System.out.print(" * "); } System.out.print（" ")； //中心 } if(i==2){ System.out.print(" * "); } System.out.println(); } for(i=1;i<=6;i++){ for(j=2;j<=1+i;j++){ System.out.print（" ")； //下空格 } System.out.print(" * "); for(j=7;j>=2*i-3;j--){ System.out.print（" ")； //下心 } if(i!=6){ System.out.print(" * "); } System.out.println(); } } } 。
2. java中怎樣打印心形
package com.zeph.j2se.alg;
public class Heart {
int HighLevel(int wide) {
int i = 0, j = 0, k = 0, t = 0, m = 0, n = 0, count = 1;// i控制循環內高度，j控制每行前面空格，k控制輸出的*數
// t控制高層星號中間空格，m記錄高層最底行的星數，以下逐行增4
// n記錄頂行空個數，以下逐行減4;count記錄高層高度，與high無關
m = (wide - 4) / 2;
do {
count++;
m -= 4;
} while (m > 4);
if ((wide - 4) % 2 == 0）// 區別對待奇偶寬度，奇數中間最小空1個，偶數最小空兩個
{
n = 2 + 4 * (count - 1);
m--;
} else
n = 1 + 4 * (count - 1);
for (i = 0; i < count; i++) {
for (j = (count - i) * 2; j > 0; j--)
System.out.print(" ");
for (k = 0; k < m; k++)
System.out.print("*");
for (t = 0; t < n; t++)
System.out.print(" ");
for (k = 0; k < m; k++)
System.out.print("*");
m += 4;
n -= 4;
System.out.print("\n");
}
return 0;
}
int LowLevel(int wide) {
int i = 0, j = 0, k = 0;// i控制輸出行，j控制輸出每行前的空格，k控制輸出*
int high = 0, tmp = wide;
do// 計算所需高度
{
high++;
tmp -= 4;
} while (tmp > 4);
high += 1;
for (i = 0; i < high; i++) {
for (j = 0; j < 2 * i; j++)
System.out.print(" ");
for (k = wide - 4 * i; k > 0; k--)
System.out.print("*");
System.out.print("\n");
}
return 0;
}
public static void main(String[] args) {
int wide = 30;
Heart heart = new Heart();
heart.HighLevel(wide);
heart.LowLevel(wide);
}
}
3. Java打印心形圖形的算法
import java.util.Scanner;
public class Test {
static void draw(int n) {
int i, j;
for (i = 1 - (n >> 1); i <= n; i++)
if (i > 0) {
for (j = 0; j < i; j++)
System.out.print(" ");
for (j = 1; j <= 2 * (n - i) + 1; j++)
if (j == 1 || j == 2 * (n - i) + 1)
System.out.print(" *");
else
System.out.print(" ");
System.out.println("\n");
} else if (i == 0) {
System.out.print(" *");
for (j = 1; j < n; j++)
System.out.print(" ");
System.out.print(" *");
for (j = 1; j < n; j++)
System.out.print(" ");
System.out.print(" *\n");
} else {
for (j = i; j < 0; j++)
System.out.print(" ");
for (j = 1; j <= n + 2 * i + 1; j++)
if (i == 1 - (n >> 1))
System.out.print(" *");
else if (j == 1 || j == n + 2 * i + 1)
System.out.print(" *");
else
System.out.print(" ");
for (j = 1; j <= -1 - 2 * i; j++)
System.out.print(" ");
for (j = 1; j <= n + 2 * i + 1; j++)
if (i == 1 - (n >> 1))
System.out.print(" *");
else if (j == 1 || j == n + 2 * i + 1)
System.out.print(" *");
else
System.out.print(" ");
System.out.print("\n");
}
}
public static void main(String[] args) {
System.out.println("Please input the size (n>=4):");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
draw(n);
}
}
4. Java打印心形圖形的算法
import java.util.Scanner;
public class Test {
static void draw(int n) {
int i, j;
for (i = 1 - (n >> 1); i <= n; i++)
if (i > 0) {
for (j = 0; j < i; j++)
System.out.print(" ");
for (j = 1; j <= 2 * (n - i) + 1; j++)
if (j == 1 || j == 2 * (n - i) + 1)
System.out.print(" *");
else
System.out.print(" ");
System.out.println("\n");
} else if (i == 0) {
System.out.print(" *");
for (j = 1; j < n; j++)
System.out.print(" ");
System.out.print(" *");
for (j = 1; j < n; j++)
System.out.print(" ");
System.out.print(" *\n");
} else {
for (j = i; j < 0; j++)
System.out.print(" ");
for (j = 1; j <= n + 2 * i + 1; j++)
if (i == 1 - (n >> 1))
System.out.print(" *");
else if (j == 1 || j == n + 2 * i + 1)
System.out.print(" *");
else
System.out.print(" ");
for (j = 1; j <= -1 - 2 * i; j++)
System.out.print(" ");
for (j = 1; j <= n + 2 * i + 1; j++)
if (i == 1 - (n >> 1))
System.out.print(" *");
else if (j == 1 || j == n + 2 * i + 1)
System.out.print(" *");
else
System.out.print(" ");
System.out.print("\n");
}
}
public static void main(String[] args) {
System.out.println("Please input the size (n>=4):");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
draw(n);
}
}
5. 如何用java在頁面上用循環打印一個愛心形狀
import java.util.Scanner;
public class test{
static void draw(int n)
{
int i,j;
for (i=1-(n>>1);i0)
{
for (j=0;j>1)) System.out.print(" *");
else if (j==1||j==n+2*i+1) System.out.print(" *");
else System.out.print(" ");
for (j=1;j>1)) System.out.print(" *");
else if (j==1||j==n+2*i+1) System.out.print(" *");
else System.out.print(" ");
System.out.print("\n");
}
}
public static void main(String[] args) {
System.out.println("Please input the size (n>=4):");
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
draw(n);
}
}先說明這個不是我寫的 是看了有人用C語言寫的 就順便改成了java 結果有點像愛心 還湊合著 你看看怎麼樣吧 哈
6. 如何用java在頁面上用循環打印一個愛心形狀
import java.util.Scanner;public class test{ static void draw(int n) { int i,j; for (i=1-(n>>1);i<=n;i++) if (i>0) { for (j=0;j
7. 我需要JAVA for循環語句打印菱形 和 正三角的代碼 希望能給加好注釋
/*
本項小程序用于打印一個菱形圖形
需求：
1.打印如下圖形
*
* *
* * *
* * * *
* * *
* *
*
思路：
1.需要兩個分離的循環
2.打印
*/
public class LingXing //這是本類的名字
{
public static void main(String[] args)
{
int m=10,n=m-1； //用戶定義要打印的菱形的大小
/*
這個for循環是用于控制打印笑臉的部分
*/
for(int x=1;x<=m;x++) //笑臉的行數
{
for(int y=x;y<=m;y++) //笑臉左面的空缺
{
System.out.print(" ");
}
for(int z=1;z<=x;z++) //笑臉的輸出部分
{
System.out.print("\2 ");
}
System.out.println();
}
/*
這個for循環是用于控制打印心形的部分
*/
for(int i=1;i<=n;i++) //心形的行數
{
for(int j=1;j<=i;j++) //心形左邊的空缺
{
System.out.print(" ");
}
for(int k=n;k>=i;k--) //心形的輸出部分
{
System.out.print(" \3");
}
System.out.println();
}
}
}
2.正三角形也是同理，沒很大差別：《代碼如上相似》
