输出这样的
配合代码好好解析
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int n = sc.nextInt();
int arr[][] = new int[n][n];
for (int i = 0; i < n; i++) {
arr[i][0] = 1;
arr[i][i] = arr[i][0];
}
for (int i = 2; i < n; i++) {
for (int j = 1; j < i; j++) {
arr[i][j] = (arr[i - 1][j] + arr[i - 1][j - 1]);
}
}
for (int i = 0; i < arr.length; i++) {
for (int j = 0; j < arr[i].length; j++) {
if(arr[i][j] != 0) {
if (j == arr[i].length - 1) {
System.out.print(arr[i][j]);
} else {
System.out.print(arr[i][j] + " ");
}
}
}
System.out.println();
}
}
}
作者：咸瑜
