Implement a suggestion function that generates alternative strings for given password strings like "facebook" = "F@ceß00k" and "fæc€Bo0K" or sth.

Question

Implement a suggestion function that generates alternative strings for given password strings like "facebook" => "F@ceß00k" and "fæc€Bo0K" or sth.

PrinceBoroujerdi · Accepted Answer

// Assumption is that we have two dictionaries populated
// First dictionary is a conversion from all common symbols/chars, to a common base char
// Second dictionary is all the related chars to the common base chars
class Suggestor
{
    Map BaseChars;
    Map CharGenerator;
    
    string suggest(string str)
    {
        for (int i=0;i

Hussein · Answer

Overlapping sub-problems.. dynamic programming like approach..

vector gen_passwords(string pass, int indx, map m) {

	if(indx >= pass.size()) {
        return vector();
    }

    string special = m[pass[indx]];
	vector vec = gen_passwords(pass, indx+1, m);
	vector res;
	
	if(special == "") {
	
		if(vec.size() == 0) vec.push_back("");
	
		for(int i = 0; i < vec.size(); i++) vec[i] = pass[indx]+vec[i];
		
		return vec;
	}
	
    for(int i = 0; i < special.size(); i++) {
        for(int j = 0; j < vec.size(); j++) res.push_back(special[i]+vec[j]);
    }
	
	return res;
}

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