题目：
金字塔打印，三角形
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
6 6 6 6 6 6
7 7 7 7 7 7 7
8 8 8 8 8 8 8 8
9 9 9 9 9 9 9 9 9
思路：
注意空格
1.代码如下 Pyramid .java：
package com.yuhl.right;
/**
* @author yuhl
* @Date 2020/10/24 23:15
* @Classname Pyramid
* @Description 金字塔打印
*
*/
public class Pyramid {
public static void main(String[] args) {
pyramid(9);//9行
}
public static void pyramid(int n){//金字塔
int i,j,k,m;
m=n;
for (i=1;i<=m;i++){
for(j=m-i;j>0;j--)
System.out.print(" ");
for(k=1;k<=i;k++)
{
System.out.print(i+" ");
}
System.out.println();
}
}
/**
* 递增金字塔
* 1
* 2 3
* 4 5 6
* 7 8 9 10
* 11 12 13 14 15
* 16 17 18 19 20 21
* 22 23 24 25 26 27 28
* 29 30 31 32 33 34 35 36
* 37 38 39 40 41 42 43 44 45
*/
public static void pyramidIcrehh(int n) {//金字塔
int step = 1;
int i, j, k, m;
m = n;
for (i = 1; i <= m; i++) {
for (j = m - i; j > 0; j--)
System.out.print(" ");
for (k = 1; k <= i; k++) {
System.out.print(step++ + " ");
}
System.out.println();
}
}
/**
* 蛇状变化
* 1
* 3 2
* 4 5 6
* 10 9 8 7
* 11 12 13 14 15
* 21 20 19 18 17 16
* 22 23 24 25 26 27 28
* 36 35 34 33 32 31 30 29
* 37 38 39 40 41 42 43 44 45
*
* Process finished with exit code 0
*/
public static void pyramidSSSS(int n) {//金字塔
int step = 1;//
int line = 0;
int i, j, k, m;
m = n;
for (i = 1; i <= m; i++) {
for (j = m - i; j > 0; j--)
System.out.print(" ");
int temp = 0;
temp = line + step;
for (k = 1; k <= i; k++) {
if (line % 2 == 1) {
System.out.print(temp-- + " ");
step++ ;
} else {
System.out.print(step++ + " ");
}
}
line ++;
System.out.println();
}
}
}
2.执行结果：
"C:\Program Files\Java\jdk1.8.0_201\bin\java.exe"
1
2 2
3 3 3
4 4 4 4
5 5 5 5 5
6 6 6 6 6 6
7 7 7 7 7 7 7
8 8 8 8 8 8 8 8
9 9 9 9 9 9 9 9 9
