5 files changed, 509 insertions, 0 deletions
diff --git a/c/dataStructure/408/list/Makefile b/c/dataStructure/408/list/Makefile
new file mode 100755
index 0000000..0b76bbc
--- /dev/null
+++ b/c/dataStructure/408/list/Makefile
@@ -0,0 +1,24 @@
+CC = gcc
+
+FLGS = -Wall -Werror -g
+
+SSRCS = main.c sqlist.c
+LSRCS = main.c lklist.c
+
+OPT = ./list
+
+ALL: link run clean
+
+link:
+	$(CC) $(LSRCS) $(FLGS) -o $(OPT)
+list:
+	$(CC) $(SSRCS) $(FLGS) -o $(OPT)
+
+run:
+	$(OPT)
+
+gdb: $(OPT)
+	gdb $(OPT)
+
+clean:
+	rm $(OPT)
diff --git a/c/dataStructure/408/list/list.h b/c/dataStructure/408/list/list.h
new file mode 100755
index 0000000..811c62d
--- /dev/null
+++ b/c/dataStructure/408/list/list.h
@@ -0,0 +1,69 @@
+/*
+ * In order to use one header file for both
+ * sequence list and linked list, I used linked list style 
+ * this may cause inconvenient when inplementing sequence list
+ */
+
+#ifndef _LIST_H
+#define _LIST_H
+
+#include<stdio.h>
+#include<stdlib.h>
+#include<stdbool.h>
+
+#define MAX 50
+
+typedef struct seq {
+    int * data;
+    int length;
+    int maxSize;
+} Seq;
+typedef Seq * sqList;
+
+typedef struct link {
+    int elem;
+    struct link * next;
+} Link;
+typedef Link * linkList;
+
+typedef struct list {
+    sqList sql;
+    linkList lin;
+} List;
+
+/* initialize list
+ * exit with code EXIT_FAILURE if initialize fail,
+ * otherwise nothing return */
+void initList(List * L);
+
+/* return number of current elements
+ * if list does not exist, return -1 */
+int lengthList(List * L);
+
+/* find location of the element
+ * if element exists, return location
+ * else return false */
+bool locateElem(List * L, int * i, int e);
+
+/* find element at given location
+ * if location is bigger/smaller than length/0
+ * return false
+ * else return location */
+bool getElem(List * L, int i, int * e);
+
+/* insert element at given location
+ * if location is bigger than length, insert at last
+ * if location is 0 or negative, return false */
+bool insertElem(List * L, int i, int e);
+
+/* if location is bigger than length,
+ * or is smaller than 1,
+ * return false */
+bool deleteElem(List * L, int i, int * e);
+void printList (List * L);
+
+/* check if list exist and have no element */
+bool emptyList (List * L);
+void deleteList(List * L);
+
+#endif
diff --git a/c/dataStructure/408/list/lklist.c b/c/dataStructure/408/list/lklist.c
new file mode 100755
index 0000000..c2112b1
--- /dev/null
+++ b/c/dataStructure/408/list/lklist.c
@@ -0,0 +1,174 @@
+#include "list.h"
+
+/*      Fundamental      */
+void initList(List * L)
+{
+    L->lin = NULL;
+}
+
+int lengthList(List * L)
+{
+    linkList tmp = L->lin;
+    int i = 0;
+    while (tmp)
+    {
+        i++;
+        tmp = tmp->next;
+    }
+
+    return i;
+}
+
+bool locateElem(List * L, int * i, int e)
+{
+    linkList tmp = L->lin;
+    *i = 1;
+    while (tmp)
+    {
+        if (tmp->elem != e)
+        {
+            (*i)++;
+            tmp = tmp->next;
+        }
+        else
+            return true;
+    }
+    return false;
+}
+
+bool getElem(List * L, int i, int * e)
+{
+    linkList tmp = L->lin;
+
+    for (int j = 1; j < i; j++)
+        if(tmp->next)
+            tmp = tmp->next;
+        else
+        {
+            fprintf(stderr,"Location is out of range\n");
+            return false;
+        }
+    *e = tmp->elem;
+    return true;
+}
+
+bool insertElem(List * L, int i, int e)
+{
+    if (i <= 0)
+    {
+        fprintf(stderr,"Invalid location!\n");
+        return false;
+    }
+    linkList scan = L->lin;
+    linkList new = (Link *) malloc (sizeof(Link));
+
+    new->elem = e;
+    new->next = NULL;
+
+    if (!L->lin)
+    {
+        L->lin = new;
+        return true;
+    }
+    else
+    {
+        if (i == 1)
+        {
+            new->next = scan;
+            L->lin = new;
+        }
+        else
+        {
+            int j = 2;
+            while (j++ < i && scan->next)
+                scan = scan->next;
+            if (!scan->next && --j < i)
+                printf("Location is beyond the list length, Append element\n");
+            new->next = scan->next;
+            scan->next = new;
+        }
+    }
+    return true;
+}
+
+bool deleteElem(List * L, int i, int  * e)
+{
+    linkList tmp = L->lin;
+    if (i == 1)
+    {
+        *e = tmp->elem;
+        L->lin = L->lin->next;
+        free(tmp);
+        return true;
+    }
+    int j = 2;      // we need the one before the one needs delete
+    while (j++ < i && tmp->next)
+        tmp = tmp->next;
+    if (!tmp->next)
+    {
+        fprintf(stderr,"location out of range\n");
+        return false;
+    }
+
+    *e = tmp->next->elem;
+    if (tmp->next)
+    {
+        linkList t = tmp->next;
+        tmp->next = t->next;
+        free(t);
+    }
+    else
+        free(tmp);
+    return true;
+}
+
+void printList(List * L)
+{
+    linkList tmp = L->lin;
+
+    while (tmp)
+    {
+        printf("%d  ",tmp->elem);
+        tmp = tmp->next;
+    }
+    putchar('\n');
+}
+
+void deleteList(List * L)
+{
+    linkList tmp = L->lin;
+    linkList del;
+    while (tmp)
+    {
+        del = tmp->next;
+        free(tmp);
+        tmp = del;
+    }
+}
+
+/*      Homework      */
+void deleteX(linkList * L, int e)
+{
+    linkList tmp = *L;
+
+    if (!tmp->next)
+        return;
+    else
+    {
+        if (tmp->elem == e)
+        {
+            (*L) = (*L)->next;
+            free(tmp);
+            deleteX(&(*L)->next,e);
+        }
+        else if (tmp->next->elem == e)
+        {
+            linkList p = tmp->next;
+            tmp->next = p->next;
+            free(p);
+            deleteX(&tmp,e);
+        }
+        else
+            deleteX(&tmp->next,e);
+    }
+}
diff --git a/c/dataStructure/408/list/main.c b/c/dataStructure/408/list/main.c
new file mode 100755
index 0000000..34e4030
--- /dev/null
+++ b/c/dataStructure/408/list/main.c
@@ -0,0 +1,41 @@
+#include "list.h"
+
+int deleteMin(List * L);
+void reverse(List * L);
+//void deleteX(List * L, int e);
+void deleteX(linkList * L, int e);
+void loopLeftN(List * L, int n);
+int main(void)
+{
+    List U;
+    initList(&U);
+
+    for (int i = 1; i <= 10; i++)
+        insertElem(&U,i,i*2);
+    int p;
+    printList(&U);
+//    loopLeftN(&U,3);
+//    printList(&U);
+    getElem(&U,8,&p);
+    printf("%d\n",p);
+    locateElem(&U,&p,10);
+    printf("%d\n",p);
+    deleteElem(&U,3,&p);
+    printf("%d\n",p);
+    insertElem(&U,7,p);
+    insertElem(&U,7,p);
+    insertElem(&U,7,p);
+    insertElem(&U,7,p);
+    insertElem(&U,7,p);
+    printList(&U);
+    deleteX(&U.lin,p);
+    deleteX(&U.lin,2);
+    deleteX(&U.lin,20);
+    printList(&U);
+//    reverse(&U);
+//    printList(&U);
+
+    deleteList(&U);
+
+    return 0;
+}
diff --git a/c/dataStructure/408/list/sqlist.c b/c/dataStructure/408/list/sqlist.c
new file mode 100755
index 0000000..05893b4
--- /dev/null
+++ b/c/dataStructure/408/list/sqlist.c
@@ -0,0 +1,201 @@
+#include "list.h"
+
+/* Fundamental */
+void initList(List * L)
+{
+
+    // create new list
+    L->sql = (Seq *) calloc (1,sizeof(Seq));
+    if (!L->sql)
+    {
+        fprintf(stderr,"create list fail\n");
+        exit(EXIT_FAILURE);
+    }
+
+    sqList tmp = L->sql;
+    // allocate memory
+    tmp->data = (int *) calloc (MAX, sizeof(int));
+    if (!tmp->data)
+    {
+        fprintf(stderr,"allocate memory fail\n");
+        exit(EXIT_FAILURE);
+    }
+
+    tmp->length = 0;
+    tmp->maxSize = MAX;
+}
+
+int lengthList(List * L)
+{
+    return L->sql->length;
+}
+
+bool locateElem(List * L, int * i, int e)
+{
+    sqList tmp = L->sql;
+    for (int j = 0; j < tmp->length; j++)
+        if (tmp->data[j] == e)
+        {
+            *i = j + 1;
+            return true;
+        }
+    return false;
+}
+
+bool getElem(List * L, int i, int * e)
+{
+    sqList tmp = L->sql;
+    if (i < 1 || i > tmp->length)
+    {
+        fprintf(stderr,"Out of range\n");
+        return false;
+    }
+    *e = tmp->data[i-1];
+
+    return true;
+}
+
+bool insertElem(List * L, int i, int e)
+{
+    sqList tmp = L->sql;
+    if (i < 1 || i > tmp->length+1)
+    {
+        fprintf(stderr, "Out of range\n");
+        return false;
+    }
+    if (tmp->length == tmp->maxSize)
+    {
+        fprintf(stderr, "List full\n");
+        return false;
+    }
+    for (int j = tmp->length; j >= i; j--)
+        tmp->data[j] = tmp->data[j-1];
+    tmp->data[i-1] = e;
+    tmp->length++;
+
+    return true;
+}
+
+bool deleteElem(List * L, int i, int * e)
+{
+    sqList tmp = L->sql;
+    if (i < 1 || i > tmp->length)
+    {
+        fprintf(stderr,"Out of range\n");
+        return false;
+    }
+    *e = tmp->data[i-1];
+
+    for (int j = i; j < tmp->length; j++)
+        tmp->data[j-1] = tmp->data[j];
+    tmp->length--;
+    return true;
+}
+
+void printList(List * L)
+{
+    sqList tmp = L->sql;
+    for (int i = 0; i < tmp->length; i++)
+        printf("%d  ",tmp->data[i]);
+    putchar('\n');
+}
+
+bool emptyList(List * L)
+{
+    sqList tmp = L->sql;
+    if (tmp->length == 0)
+        return true;
+    return false;
+}
+
+void deleteList(List * L)
+{
+    free(L->sql->data);
+    free(L->sql);
+}
+
+/* homework */
+// 1
+int deleteMin(List * L)
+{
+    sqList tmp = L->sql;
+    
+    if (tmp->length == 0)
+    {
+        fprintf(stderr,"list is empty\n");
+        exit(1);
+    }
+    int min = tmp->data[0], index = 0;
+
+    for (int i = 1; i < tmp->length; i++)
+        if (min > tmp->data[i])
+        {
+            min = tmp->data[i];
+            index = i;
+        }
+    tmp->length--;
+    for (int i = index; i < tmp->length; i++)
+        tmp->data[i] = tmp->data[i+1];
+    return min;
+}
+
+// 2
+void reverse(List * L)
+{
+    sqList tmp = L->sql;
+    for (int i = 0; i < tmp->length/2; i++)
+    {
+        int t = tmp->data[i];
+        tmp->data[i] = tmp->data[tmp->length-1-i];
+        tmp->data[tmp->length-1-i] = t;
+    }
+}
+
+// 3
+void deleteX(List * L, int e)
+{
+    sqList tmp = L->sql;
+    int n = 0, index = -1, i;
+
+    for (i = 0; i < tmp->length; i++)
+    {
+        if (tmp->data[i] == e)
+            n++;
+        if (tmp->data[i] == e && index == -1)
+            index = i;      // get first element's index
+    }
+
+    for (i = index; i + n < tmp->length; i++)
+        tmp->data[i] = tmp->data[i+n];
+    tmp->length -= n;
+}
+
+// 10
+// helper
+void rev(sqList q, int low, int high)
+{
+    for (int i = low; i < (low+high)/2; i++)
+    {
+        int n = i - low;
+        int tmp = q->data[i];
+        q->data[i] = q->data[high-1-n];
+        q->data[high-1-n] = tmp;
+    }
+}
+
+// question answer
+void loopLeftN(List * L, int n){
+    sqList tmp = L->sql;
+    rev(tmp,0,n);
+    rev(tmp,n,tmp->length);
+    rev(tmp,0,tmp->length);
+}
+// extra
+void loopRightN(List * L, int n)
+{
+    sqList tmp = L->sql;
+    n = tmp->length - n;
+    rev(tmp,0,n);
+    rev(tmp,n,tmp->length);
+    rev(tmp,0,tmp->length);
+}