Method swap

src/class136/ShowDetails.java:78–82

(int a, int b)

	}

	public static void swap(int a, int b) {
		long tmp = basis2[a];
		basis2[a] = basis2[b];
		basis2[b] = tmp;
	}

	public static void main(String[] args) {
		// 课上讲的普通消元，例子1