Java打印等腰梯形

package com.webkfa.test;

public class Test {
	public static void main(String[] args){
		printTriangle(10,4);
	}
	/**
	 * 等腰梯形
	 * @param len
	 * @param pos
	 */
	public static void printTriangle(int len,int pos) {
		//原代码地址:http://www.webkfa.com/one7/w499.html
		int a = 0;
		int b = 0;
		for (int i=1; i<=len; i++) {
			if(i<pos)continue;
			if (a != (len - i)) {
				System.out.print(" ");
				a++;
				i = i - 1;
			} else if (b != (2 * i - 1)) {
				System.out.print("*");
				b++;
				i = i - 1;
			} else if (a == (len - i) && b == (2 * i - 1)) {
				System.out.println();
				a = 0;
				b = 0;
			}
		}
	}
}