Add a constructor to Vector.h. Test class GraphMatrix, all tests passed. Dfs and Bfs remained to be done.

thu_dsa/chp2/Vector.h

@@ -34,6 +34,7 @@ public:
 	//constructors
 	Vector();
 	Vector(int capacity);
+	Vector(int size, T const &value);
 	Vector(T* const A, int n) { copyfrom(A, 0, n); }
 	Vector(T* const A, int lo, int hi) { copyfrom(A, lo, hi); }
 	Vector(Vector<T> const &V) { copyfrom(V._elem, 0, V._size); }
@@ -149,6 +150,15 @@ Vector<T>::Vector(int capacity) {
 	_elem = new T[_capacity];
 }
 
+template<typename T>
+Vector<T>::Vector(int size, T const &value){
+	_capacity = size << 1;
+	_size     = size;
+	_elem = new T[_capacity];
+	for (int ix = 0; ix != _size; ++ix)
+		_elem[ix] = value;
+}
+
 //read-only interfaces
 template<typename T>
 void Vector<T>::print() {

thu_dsa/chp2/testVector.cpp

@@ -66,6 +66,12 @@ void test_constructor() {
 	assert(V5.getSize() == 2);
 	assert(V5.getCapacity() == 4);
 
+	Vector<int> V6(10, 0);
+	assert(V6.getSize() == 10);
+	assert(V6.getCapacity() == 20);
+	for (int ix = 0; ix != 10; ++ix)
+		assert(V6[ix] == 0);
+
 	cout << "test passed." << endl;
 }