Java基础(七) 重写Arrays.sort

Arrays.sort(T[], new Comparator<T>() {
	public int compare(T a, T b){
		return fa - fb;
	}
});

Arrays.sort(int[][] nums,new Comparator<int[]> {
    public int compare(int[] t1,int[] t2){
        return t1[0]-t2[0];
    }
});