public class ArrayDemo02 {
public static void main(String[] args) {
int yanggui[][] = new int[9][];
for(int i = 0;i < yanggui.length;i++){
yanggui[i] = new int[i + 1];
yanggui[i][0] = yanggui[i][i] = 1;
if(i > 1){
for(int j = 1;j < yanggui[i].length - 1;j++){
yanggui[i][j] = yanggui[i - 1][j] + yanggui[i - 1][j - 1];
}
}
}
for(int i = 0;i < yanggui.length;i++){
for(int j = 0;j < yanggui[i].length;j++){
System.out.print(yanggui[i][j] + "\t");
}
System.out.println();
}
}
}
public class learn {
public static void main(String[] args){
System.out.println("請輸入你需要列印多少階的回形數:");
Scanner scan = new Scanner(System.in);
int num = scan.nextInt(); // 接收num,則列印num階的回形數
scan.close();
int[][] hui = new int[num][num];
for(int i = 0,j = 0,flag = 0,theNum = 1; theNum<=(num*num);) { // i可視為二維數組的第i+1排,j可視為二維數組的j+1列;flag表示回形數進行的第flag+1圈;theNum為賦的值。
if(j hui[i][j] = theNum;
j++;
theNum++;
}
else if(i+1 hui[i+1][j-1] = theNum;
theNum++;
i++;
}
else {
for(int m = num-flag-1,n = num -flag-1;;) {
if(n>flag) { //回形數向左走時
n--;
hui[m][n] = theNum;
theNum++;
}
else if(m>flag+1) { //回形數向右走時
m--;
hui[m][n] = theNum;
theNum++;
}
else {
i = flag+1;
j = flag+1;
flag++;
break;
}
}
}
}
for(int a = 0;a for(int b = 0;b System.out.printf("%d ",hui[a][b]);
}
System.out.println("\n");
}
}
}