Please read carefully and help me.

Refer to the following code, implement the method: public int compareTo (NumStack s) ments Comparablef public int compareTo (NumStack s) compares two stack from the bottom of each stack, for example, s1[2,0, 9] and s2[9,e,9], calling s1.compareTo(s2) should return ublic class NumStack imple private Integer[] data private int index; public NumStack(int cap)( data-new Integer cap index --1: 1, top 9 9 bottom 2 9 1st: 21 ic Numstack push(int num) f (index