Please look into compare function, it does not work

#1
#2

Hey @krishav49
Your compare function is incorrect

Output for this
2
appp
ap

should be

appp
ap

Here refer to correct compare here

int compareTo(string s1, string s2) {

        int i = 0;      

        while (i < s1.length() && i < s2.length()) {

            if (s1[i] > s2[i]) {

                return 1;
            } else if (s1[i] < s2[i]) {
                return -1;
            }
            i++;

        }

        if (s1.length() > s2.length()) {
            return -1;
        } else {
            return 1;
        }

    }
#3

It’s not working…

#4

Hey @krishav49
Sorry for that ,check this one

bool compare(string a, string b){

    if (a.find(b)==0 || b.find(a)==0){  //If a was prefix of b or b is prefix of a

        return a.length() > b.length(); //then we place the one with greater length before other

    }   

    return a < b; //else we place by dictionary order

}
#5

if (a.find(b)==0 || b.find(a)==0)
I don’t understand how it is work, please explain it briefly

#6

string.find(substring) // find finds the first occurence of substringi in string
so
if b is prefix of a then a.find(b) will return 0 because present at 0 index
similarly b.find(a)

1 Like
#7

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