Initialize the vector of elements

initializeVector.cpp

// Maps a word to the index in the vector
map<string, int> wordToVectorIndex;

// Push the word to the vector
while (cin >> word)
{
	element e;
	e.word = word;
	e.noOfLadders = 0;
	e.isVisited = ELEMENT_NOT_VISITED;
	e.distanceFromSource = 0;
	wordListDS.push_back(e);

	wordToVectorIndex[word] = wordIndex++;
}