自定义长数据

public class MyBigInt {private int[] array;public int length(){return array.length;}public MyBigInt(int[] array){this.array=array;}public int[] getArray(){return array;}public int size(){return array.length;}public MyBigInt(String string){array = new int[string.length()];for(int i=0;i<string.length();i++){array[i] = string.charAt(string.length()-1-i)-48;}}public String toString(){String str = "";for(int i=size()-1;i>=0;i--){if(!(i==size()-1&&array[size()-1]==0)){str += array[i];}}return str;}public MyBigInt add(MyBigInt myBigInt){int s = size()>myBigInt.size()?size():myBigInt.size();int[] temp = myBigInt.getArray();int[] result = new int[s+1];int flag = 0;for(int i=0;i<s;i++){int a = i>=size()?0:array[i];int b = i>=myBigInt.size()?0:temp[i];int t = a+b+flag;result[i] = t%10;flag = t>=10?1:0;}result[s] = flag;return new MyBigInt(result);}public static void main(String[] args) {MyBigInt m1 = new MyBigInt("1");MyBigInt m2 = new MyBigInt("999999999999999999999999999999999999999999999999999999999999999999999999999");System.out.println(m1.add(m2));}}