Question: is this code correct? Modify your program created in the previous question so that it keeps lists of intermediate words during the two sorts instead

is this code correct?
"Modify your program created in the previous question so that it keeps lists of intermediate words during the two sorts instead of keeping lists of swap indices."
#include
#include
#include
#include
#include
#include
#include
using namespace std;
// Function to check if two words are anagrams
bool areAnagrams(const string& word1, const string& word2){
if (word1.length()!= word2.length()) return false;
string sorted1= word1;
string sorted2= word2;
sort(sorted1.begin(), sorted1.end());
sort(sorted2.begin(), sorted2.end());
return sorted1== sorted2;
}
// Function to check if one word can be obtained by swapping adjacent letters
bool canTransformBySwapping(const string& word1, const string& word2){
if (word1.length()!= word2.length()) return false;
for (size_t i =0; i < word1.length()-1; ++i){
string temp = word1;
swap(temp[i], temp[i +1]);
if (temp == word2) return true;
}
return false;
}
// Function to produce a proof sequence using BFS
vector produceProofSequence(const string& start, const string& target){
if (start == target) return {start};
unordered_set visited;
queue>> q;
q.push({start,{start}});
visited.insert(start);
while (!q.empty()){
auto [current, sequence]= q.front();
q.pop();
for (size_t i =0; i < current.length()-1; ++i){
string next = current;
swap(next[i], next[i +1]);
if (visited.find(next)== visited.end()){
vector nextSequence = sequence;
nextSequence.push_back(next);
if (next == target) return nextSequence;
q.push({next, nextSequence});
visited.insert(next);
}
}
}
return {}; // return empty vector if no sequence is found
}
int main(){
try {
string word1, word2;
cout << "Enter the first word: ";
if (!(cin >> word1)){
throw invalid_argument("Invalid input for the first word.");
}
cout << "Enter the second word: ";
if (!(cin >> word2)){
throw invalid_argument("Invalid input for the second word.");
}
if (!areAnagrams(word1, word2)){
cout << "The words are not anagrams. Transformation is not possible.
";
} else {
vector proofSequence = produceProofSequence(word1, word2);
if (!proofSequence.empty()){
cout << "Transformation is possible. Proof sequence:
";
for (const string& word : proofSequence){
cout << word <<"";
}
cout <<"
";
} else {
cout << "Transformation is not possible by swapping adjacent letters.
";
}
}
} catch (const invalid_argument& e){
cerr << "Error: "<< e.what()<<"
";
} catch (const out_of_range& e){
cerr << "Error: "<< e.what()<<"
";
} catch (const exception& e){
cerr <<"An unexpected error occurred: "<< e.what()<<"
";
} catch (...){
cerr <<"An unknown error occurred.
";
}
return 0;
}

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