1.import java.util.Scanner;2.3.public class Test034.{5.public static void main(String[] args)6. {7. Scanner input = new Scanner(System.in);8. System.out.println("请输入行数");9.int rows=input.nextInt();10.for (int i = 0; i < rows; i++)11. {12.for (int j = 0; j <= i; j++)13. {14. System.out.print("* ");15. }16. System.out.println();17. }18. System.out.println("倒过来的三角");19.for (int i = rows-1; i >=0; i--)20. {21.for (int j = 0; j <= i; j++)22. {23. System.out.print("* ");24. }25. System.out.println();26. }27.28. }29.}30.请输入行数31.532.*33.* *34.* * *35.* * * *36.* * * * *37.倒过来的三角38.* * * * *39.* * * *40.* * *41.* *42.*43.</pre><br>062106" name="code"class="java">package ch09;45.46.import java.util.Scanner;47.48.49.50.public class Test0451.{52.public static void main(String[] args)53. {54. Scanner input = new Scanner(System.in);55. System.out.println("请输入行数");56.int row=input.nextInt();57.58.for (int i = 1; i <=row; i++)59. {60.for (int j = 0; j < row-i; j++)61. {62. System.out.print(" ");63. }64.for (int j = 0; j < 2*i-1; j++)65. {66. System.out.print("*");67. }68. System.out.println();69. }70.71.72. }73.}74.请输入行数75.1076. *77. ***78. *****79. *******80. *********81. ***********82. *************83. ***************84. *****************85.*******************86.</pre><br>347484" name="code"class="java">package ch09;88.89.import java.util.Scanner;90.91.public class Test0592.{93.public static void main(String[] args)94. {95. Scanner input = new Scanner(System.in);96.int row = 0;97. System.out.println("请输入行数");98. row = input.nextInt();99.while (row%2==0){100. System.out.println("请输入奇数"); 101. row=input.nextInt();102. }103.104.for (int i = 1; i <= row; i++)105. {106.for (int j = 0; j < row - i; j++) 107. {108. System.out.print(" ");109. }110.for (int j = 0; j < 2 * i - 1; j++) 111. {112. System.out.print("*");113. }114. System.out.println();115. }116.for (int i = row-1; i >=0; i--)117. {118.for (int j = 0; j < row - i; j++) 119. {120. System.out.print(" ");121. }122.for (int j =2 * i - 1;j>0 ; j--) 123. {124. System.out.print("*");125. }126. System.out.println();127. }128.129.130. }131.}132.</pre><br>133.<pre code_snippet_id="94876" snippet_file_name="blog_20131203_4_ 1189271" name="code"class="java">请输入行数134.7135. *136. ***137. *****138. *******139. *********140. ***********141.*************142. ***********143. *********144. *******145. *****146. ***147. *148.149.</pre><br>150.<pre code_snippet_id="94876" snippet_file_name="blog_20131203_5_ 3555822" name="code"class="java">package ch09;151.152.import java.util.Scanner;153.154.public class Test06155.{156.public static void main(String[] args)157. {158. Scanner input = new Scanner(System.in);159.int count = 0;160. System.out.println("请输入边长");161. count=input.nextInt();162.// 控制行数163.for (int i = 0; i < count; i++) {164.if (i == 0 || i == count - 1) {165.// 数组第一个行和最后一行的边166.for (int j = 0; j < count; j++) {167. System.out.print("* ");168. }169. } else {170.// 左边的边171. System.out.print("*");172.// 输出空格173.for (int j = 0; j < count - 2; j++) { 174. System.out.print(" ");175. }176.// 右边的边177. System.out.print(" *");178. }179.// 换行180. System.out.println();181. }182.183. }184.}185.请输入边长186.10187.* * * * * * * * * *188.* *189.* *190.* *191.* *192.* *193.* *194.* *195.* *196.* * * * * * * * * * </pre><br>197.package ch09;198.199.public class Test02{200.public static void main(String[] args){201.for (int i = 0; i < 13; i++){202.for (int j = 0; j <= i; j++){203.System.out.print("* ");204.}205.System.out.println();206.}207.}208.}** ** * ** * * ** * * * ** * * * * ** * * * * * ** * * * * * * ** * * * * * * * ** * * * * * * * * ** * * * * * * * * * ** * * * * * * * * * * ** * * * * * * * * * * * *209./**210.* 倒三角211.*/212.private static void 倒三角() {213.System.out.println("------------------------倒三角------------------------");214.for(int i=0;i<=9;i++){215.//空格216.for(int j=1;j<=i;j++){217.System.out.print(" ");218.}219.//*号220.for(int k=1;k<=19-2*i;k++){221.System.out.print("*");222.}223.System.out.println();224.}225.}226./**227.* 空心菱形228.*/229.private static void 空心菱形(){230.System.out.println("-------------------------空心菱形--------------------------------");231.for(int i=1;i<=10;i++){232.for(int j=1;j<=10-i;j++){233.System.out.print(" ");234.}235.for(int k=1;k<=2*i-1;k++){236.if(k==1 || k==2*i-1){237.System.out.print("*");238.}else{239.System.out.print(" ");240.}241.}242.System.out.println();243.}244.//---------------^------------------------------ 245.for(int i=1;i<=9;i++){246.for(int j=1;j<=i;j++){247.System.out.print(" ");248.}249.for(int k=1;k<=19-2*i;k++){250.if(k==1 || k==19-2*i){251.System.out.print("*");252.}else{253.System.out.print(" ");254.}255.}256.System.out.println();257.}258.259.}----------------------------------------倒三角形-------------------------------------****************************************************************************************************--------------------------------------------空心菱形---------------------------------------------** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **1./**2.*3.*/4.package com.itheima.打印图形;5.6./**7.* @author 吴愿涛8.* 1.外层判断循环条件，满足进入外层循环体9.* 2.内层判断循环条件10.* 3.内层循环体执行11.* 4.内层循环变量累加，回到2执行，直到不满足内层条件12.* 5.外层循环变量累加，回到1执行，直到不满足外层循环条件，彻底退出循环13.*14.*15.*/16.public class _9X9 {17.public static void main(String[] args) {18._9x9();19._9x9_2();20.}21./* 实际上是打印了一个乘法表，1*1开始9*9结束。