--- a/Huffman/test-huffman.c	Tue Jul 31 04:55:48 2012 +0900
+++ b/Huffman/test-huffman.c	Tue Jul 31 06:27:17 2012 +0900
@@ -1,16 +1,80 @@
 #include <stdio.h>
 #include <stdlib.h>
 
+#define N 256
+#define READ_BUF_SIZE 1024
+#define INPUT(fp, buf, result, max_size) result = fread(buf, 1, max_size, fp)
 
+int parent[2*N];
+int l_node[2*N], r_node[2*N];
+
+void q_sort(int* numbers[], int left, int right)
+{
+	int pivot, l_hold, r_hold;
+	int *bp;
+	l_hold = left;
+	r_hold = right;
+	pivot = *numbers[left];
+	bp = numbers[left];
+	while (left < right)
+    {
+		while ((*numbers[right] >= pivot) && (left < right))
+			right--;
+		if (left != right)
+        {
+			numbers[left] = numbers[right];
+			left++;
+        }
+		while ((*numbers[left] <= pivot) && (left < right))
+			left++;
+		if (left != right)
+        {
+			numbers[right] = numbers[left];
+			right--;
+        }
+    }
+	numbers[left] = bp;
+	pivot = left;
+	left = l_hold;
+	right = r_hold;
+	if (left < pivot)
+		q_sort(numbers, left, pivot-1);
+	if (right > pivot)
+		q_sort(numbers, pivot+1, right);
+}
+void quick_sort(int* numbers[], int array_size)
+{
+	q_sort(numbers, 0, array_size - 1);
+}
+
+
+int encode(char *buf, size_t n_chars) 
+{
+	int alp[N];
+
+	int i;
+	for (i=0; i<N; i++ ) alp[i] = 0;
+	for (i=0; i<n_chars; i++ ) {
+		alp[buf[i]]++;
+	}
+	
+	int *numbers[N];
+	for (i=0; i<N; i++ ) numbers[i] = alp+i;
 
 
 
-#define READ_BUF_SIZE 1024
+	for (i=0; i<N; i++) {
+		
+	}
+	
 
-#define INPUT(fp, buf, result, max_size) result = fread(buf, 1, max_size, fp)
+	return 0;
+}
 
 
-int main(int argc, char* argv[]) {
+
+int main(int argc, char* argv[])
+{
 	
 	FILE *fp;
 	char *filename = "./test.txt";
@@ -23,13 +87,19 @@
 	size_t n_chars;
 	INPUT(fp, base, n_chars, READ_BUF_SIZE);
 	
+
 	do {
 		buf = base;
 		int ret;
+
+
+		encode((char)buf, n_chars);
+/*
 		while ( (ret = (int)*buf) != '\0' ) {
 			putc(*buf,stdout);
 			++buf;
 		}
+*/
 		if ( n_chars < READ_BUF_SIZE ) {
 			break;
 		}

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Huffman/test-quicksort.c	Tue Jul 31 06:27:17 2012 +0900
@@ -0,0 +1,62 @@
+#include <stdio.h>
+void q_sort(int* numbers[], int left, int right)
+{
+	int pivot, l_hold, r_hold;
+	int *bp;
+	l_hold = left;
+	r_hold = right;
+	pivot = *numbers[left];
+	bp = numbers[left];
+	while (left < right)
+    {
+		while ((*numbers[right] >= pivot) && (left < right))
+			right--;
+		if (left != right)
+        {
+			numbers[left] = numbers[right];
+			left++;
+        }
+		while ((*numbers[left] <= pivot) && (left < right))
+			left++;
+		if (left != right)
+        {
+			numbers[right] = numbers[left];
+			right--;
+        }
+    }
+	numbers[left] = bp;
+	pivot = left;
+	left = l_hold;
+	right = r_hold;
+	if (left < pivot)
+		q_sort(numbers, left, pivot-1);
+	if (right > pivot)
+		q_sort(numbers, pivot+1, right);
+}
+void quick_sort(int* numbers[], int array_size)
+{
+	q_sort(numbers, 0, array_size - 1);
+}
+
+
+
+int main()
+{
+	int n = 6;
+	int buf[] = {33, 23, 11, 44, 51, 98};
+	int *numbers[n];
+
+	int i;
+
+	for (i=0; i<n; i++) {
+		numbers[i] = buf+i;
+	}
+
+	quick_sort(numbers, n); // N is size of "buf". It is defined in "test-huffman.c".
+
+	for (i=0; i<n; i++ ) {
+		printf("%d ",*numbers[i]);
+	}
+	puts("");
+	return 0;
+}