/**
* 打印杨辉三角
* @author tiger
* @date 2010-07-20 周二
* 于赤沙石伦里横街15号402。
*/
public class yanghui {
private int[] array = {0,1,0};
private int[] getNextArray(int[] array)
{
int length = array.length + 1;
int[] nextArray = new int[length];
nextArray[0] = 0;
nextArray[length - 1] = 0;
for (int i = 1; i < length - 1; i++) {
nextArray[i] = array[i] + array[i-1];
}
return nextArray;
}
private void action(int n)
{
for (int i = 0; i < n; i++) {
print(array);
array = getNextArray(array);
}
}
private void print(int[] a)
{
for (int i = 1; i < a.length - 1; i++) {
System.out.print(a[i] + ", ");
}
System.out.println();
}
public static void main(String[] args) {
new yanghui().action(10);
}
}
/*打印结果：
1,
1, 1,
1, 2, 1,
1, 3, 3, 1,
1, 4, 6, 4, 1,
1, 5, 10, 10, 5, 1,
1, 6, 15, 20, 15, 6, 1,
1, 7, 21, 35, 35, 21, 7, 1,
1, 8, 28, 56, 70, 56, 28, 8, 1,
1, 9, 36, 84, 126, 126, 84, 36, 9, 1,
*/