public huffman extractMin()
{
huffman min = arr[0];
delete(0);
return(min);
}
void minHeapify(huffman[] arr, int i)
{
int min = i;
int left = 2 * i + 1;
int right = 2 * i + 2;
if (left < size && arr[left].data < arr[min].data)
{
min = left;
}
if (right < size && arr[right].data < arr[min].data)
{
min = right;
}
if (min != i)
{
huffman temp = arr[i];
arr[i] = arr[min];
arr[min] = temp;
minHeapify(arr, min);
}
}
void buildTree(minheap obj)
{
while (getSize(obj) >= 1)
{
if (top == null)
{
huffman left = obj.extractMin();
huffman right = obj.extractMin();
top = new huffman(left.data + right.data, '-');
top.left = left;
top.right = right;
obj.insert(left.data + right.data, '-');
}
else
{
huffman left = obj.extractMin();
huffman right = top;
huffman obj_huff = new huffman(left.data + right.data, '-');
obj_huff.left = left;
obj_huff.right = right;
top = obj_huff;
obj.insert(left.data + right.data, '-');
}
}
}
public huffman(int data, char c)
{
this.data = data;
this.c = c;
left = null;
right = null;
}
huffman[] getArrayFromDict(Dictionary <char, int> dict)
{
int index = 0;
huffman[] arr = new huffman[dict.Count];
foreach (KeyValuePair <char, int> pair in dict)
{
huffman obj = new huffman(pair.Value, pair.Key);
arr[index] = obj;
index++;
}
return(arr);
}
void printtree(huffman root, string str)
{
if (root == null)
{
return;
}
if (root.left == null && root.right == null)
{
Console.WriteLine(root.c + ":" + str);
}
printtree(root.left, str + "0");
printtree(root.right, str + "1");
}
public void insert(int data, char c)
{
size++;
int i = size - 1;
arr[i] = new huffman(data, c);
while (i != 0 && arr[getParent(i)].data > arr[i].data)
{
huffman temp = arr[getParent(i)];
arr[getParent(i)] = arr[i];
arr[i] = temp;
i = getParent(i);
}
}
