用java打印杨辉三角
时间: 2023-11-17 20:22:36 浏览: 26
好的,以下是用 Java 打印杨辉三角的代码:
```java
import java.util.Scanner;
public class YangHuiTriangle {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("请输入要打印的行数:");
int n = scanner.nextInt();
int[][] arr = new int[n][n];
for (int i = 0; i < n; i++) {
arr[i][0] = 1;
arr[i][i] = 1;
}
for (int i = 2; i < n; i++) {
for (int j = 1; j < i; j++) {
arr[i][j] = arr[i - 1][j - 1] + arr[i - 1][j];
}
}
for (int i = 0; i < n; i++) {
for (int j = 0; j <= i; j++) {
System.out.print(arr[i][j] + " ");
}
System.out.println();
}
}
}
```
运行程序后,输入要打印的行数,程序会自动计算并打印出对应的杨辉三角,例如输入6,输出结果如下:
```
1
1 1
1 2 1
1 3 3 1
1 4 6 4 1
1 5 10 10 5 1
```
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