Permutation of a string

#1

question–>
https://practice.geeksforgeeks.org/problems/permutations-of-a-given-string/0
code–>


it is showing segmentation fault

#2

Add return statement in base case @sheikhhaji18

    if(i==s.length()){
        v.push_back(s);
        return ;//added this
    }

Now try to debug logically :slight_smile:

#3 
void fun(string s,int i,vector<string> &v){

    if(i==s.length()){

        v.push_back(s);

        return ;

    }

    for(int j=i;j<s.length();j++){  //j=i updated

        swap(s[i],s[j]);

        fun(s,i+1,v);

        swap(s[i],s[j]);

    }

    

}

Now it is passing all testcases
Man i did this for third time still i cannot code it, i am just mugging up things ,i should try to dry run; and learn the concept;thanks

1 Like
#4

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