Method minOperation

Gfg/zero.cpp:18–34

class Solution{
    public:
    int minOperation(int N){
        int days = 0,t,num = N;
        int m = 0;
        while(num > 0){
            N = num;
            m = 0;
        
        while(N > 0){
            t = N % 10;
            N = N / 10;
            m = max(t,m);
        }
        days++;
        num = num - m;
        }
    return days;
}
};

//Driver code starts