1 files changed, 57 insertions, 0 deletions
diff --git a/sem3/algo/mm2/linked/node.c b/sem3/algo/mm2/linked/node.c
new file mode 100644
index 0000000..cce1be0
--- /dev/null
+++ b/sem3/algo/mm2/linked/node.c
@@ -0,0 +1,57 @@
+#include "node.h"
+
+#include <string.h>
+#include <stdlib.h>
+
+/* Insert after node */
+node_t *node_insert(node_t *node, int val) {
+	/* Create new node */
+	node_t *newNode = (node_t *) malloc( sizeof(node_t) );
+	if( newNode == NULL ) {
+		return NULL;
+	}
+
+
+	newNode->val = val;
+	newNode->prev = node;
+
+	/* Check if there is node before */
+	if( node == NULL ) {
+		/* If not then there is no after */
+		newNode->next = NULL;
+		return newNode;
+	}
+
+	/* Set next node */
+	newNode->next = node->next;
+	node->next = newNode;
+
+	/* Check node after */
+	if( newNode->next != NULL ) {
+		/* Backlink next node */
+		newNode->next->prev = newNode;
+	}
+
+	return newNode;
+}
+
+/* Pop node */
+int node_pop(node_t *node) {
+	int val = node->val;
+
+	/* Check prev */
+	if( node->prev != NULL ) {
+		/* Point last node to next node */
+		node->prev->next = node->next;
+	}
+
+	/* Check next */
+	if( node->next != NULL ) {
+		node->next->prev = node->prev;
+	}
+
+	/* Free memory */
+	free(node);
+
+	return val;
+}