黑马软件工程师——java——几种for循环编程思想
黑马程序员——java——几种for循环编程思想
几种for循环编程思想
public class TextDemos1 { public static void main(String[] args) { // TODO Auto-generated method stub med7(); } private static void med7() { // TODO Auto-generated method stub for(int i=0;i<=8;i++) { for(int j =0;j<i;j++) { System.out.print(" "); } for(int j=8;j>=i;j--) { System.out.print("* "); } System.out.println(); } /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ } private static void med6() { // 输出九九乘法表 for(int i =1;i<=9;i++) { for(int j =1;j<=i;j++) { System.out.print(j+" * "+i+" = "+i*j+" "); } System.out.println(); } /* 1 * 1 = 1 1 * 2 = 2 2 * 2 = 4 1 * 3 = 3 2 * 3 = 6 3 * 3 = 9 1 * 4 = 4 2 * 4 = 8 3 * 4 = 12 4 * 4 = 16 1 * 5 = 5 2 * 5 = 10 3 * 5 = 15 4 * 5 = 20 5 * 5 = 25 1 * 6 = 6 2 * 6 = 12 3 * 6 = 18 4 * 6 = 24 5 * 6 = 30 6 * 6 = 36 1 * 7 = 7 2 * 7 = 14 3 * 7 = 21 4 * 7 = 28 5 * 7 = 35 6 * 7 = 42 7 * 7 = 49 1 * 8 = 8 2 * 8 = 16 3 * 8 = 24 4 * 8 = 32 5 * 8 = 40 6 * 8 = 48 7 * 8 = 56 8 * 8 = 64 1 * 9 = 9 2 * 9 = 18 3 * 9 = 27 4 * 9 = 36 5 * 9 = 45 6 * 9 = 54 7 * 9 = 63 8 * 9 = 72 9 * 9 = 81 * */ } private static void med5() { // TODO Auto-generated method stub for(int i =0;i<=6;i++) { for(int j =0;j<i;j++) { System.out.print(i); } System.out.println(); } /* 1 22 333 4444 55555 666666 **/ } private static void med4() { // TODO Auto-generated method stub for(int i =0;i<=6;i++) { for(int j =6;j>i;j--) { System.out.print(j); } System.out.println(); } /* 654321 65432 6543 654 65 6 * */ } private static void med3() { // TODO Auto-generated method stub for(int i =0;i<=6;i++) { for(int j =6-i;j>0;j--) { System.out.print(j); } System.out.println(); } /* 654321 54321 4321 321 21 1 **/ } private static void med2() { // TODO Auto-generated method stub for(int i =0;i<=10;i++) { for(int j =0;j<=i;j++) { System.out.print("*"); } System.out.println(); } /** * ** *** **** ***** ****** ******* ******** ********* ********** *********** */ } private static void med1() { // for(int i =0;i<=10;i++) { for(int j =0;j<=10-i;j++) { System.out.print("*"); } System.out.println(); } } /* *********** ********** ********* ******** ******* ****** ***** **** *** ** * */ }