代码语言：javascript复制
package *;
/**
* @program: data-structure
* @description: 打印菱形算法
* @author: ChenWenLong
* @create: 2019-09-10 14:38
**/
public class Rhombus {
public static void main(String[] args) {
//printHollowRhombus(10);
printSolidRhombus(10);
}
/**
* 功能描述:
* 〈打印指定行数line的空心菱形〉
*
* @params : [line]
* @return : void
* @author : cwl
* @date : 2019/9/10 15:12
*/
public static void printHollowRhombus(int line) {
if (line % 2 == 0) {
line ;// 计算菱形大小
}
for (int i = 0; i < line / 2 1; i ) {
for (int j = line / 2 1; j > i 1; j--) {
System.out.print(" ");// 输出左上角位置的空白
}
for (int j = 0; j < 2 * i 1; j ) {
if (j == 0 || j == 2 * i) {
System.out.print("* ");// 输出菱形上半部边缘
} else {
System.out.print(" ");// 输出菱形上半部空心
}
}
System.out.println(""); //换行
}
for (int i = line / 2 1; i < line; i ) {
for (int j = 0; j < i - line / 2; j ) {
System.out.print(" ");// 输出菱形左下角空白
}
for (int j = 0; j < 2 * line - 1 - 2 * i; j ) {
if (j == 0 || j == 2 * (line - i - 1)) {
System.out.print("* ");// 输出菱形下半部边缘
} else {
System.out.print(" ");// 输出菱形下半部空心
}
}
System.out.println(""); //换行
}
}
/**
* 功能描述:
* 〈打印指定行数line的实心菱形〉
*
* @params : [line]
* @return : void
* @author : cwl
* @date : 2019/9/10 15:14
*/
public static void printSolidRhombus(int line){
for(int i = 0;i < line;i ){
for(int k = 0;k < line-1 - i;k ){
System.out.print(" ");
}
for(int j = 0;j < i 1;j ){
System.out.print("* ");
}
System.out.println();
}
//下半部分
for(int i = 0;i < line-1;i ){
for(int k = 0;k < i 1;k ){
System.out.print(" ");
}
for(int j = 0;j < line-1 - i;j ){
System.out.print("* ");
}
System.out.println();
}
}
}
