ava语言实现杨辉三角的主要思路和代码

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import java.util.Scanner;

public class PascalTriangle {
	
	public static void main(String[] args) {
		
		Scanner scanner = new Scanner(System.in);
		
		int MAX = scanner.nextInt();
		
		long odds[][] = new long[MAX][];
		for (int n = 0; n < MAX; n++) {
			odds[n] = new long[n + 1];  
		}
		
		/*
		 * 用上一行递推计算
		 * 每个数字等于上一行的左右两个数字之和。
		 * 可用此性质写出整个杨辉三角。即第n+1行的第i个数等于第n行的第i-1个数和第i个数之和
		 */
		for (int n = 0; n < odds.length; n++) {
			for (int m = 0; m < odds[n].length; m++) {		
				if (m == 0 || m == n) {
					odds[n][m] = 1;
				}else {
					odds[n][m] = odds[n - 1][m - 1] + odds[n - 1][m];
				}
	
			}
		}
		
		// 输出整个三角形
		for (int n = 0; n < odds.length; n++) {
			for (int m = 0; m < odds[n].length; m++) {
				System.out.print(odds[n][m] + " ");
			}
			System.out.println();
		}		
	

	}
}