Add Merge two sorted lists Solution - s0ooo0k

Author: s0ooo0k

merge-two-sorted-lists/s0ooo0k.java

@@ -0,0 +1,19 @@
+class Solution {
+    /*
+     * 시간복잡도 O(m+n) m: list1의 길이, n: list2의 길이
+     */
+    public ListNode mergeTwoLists(ListNode list1, ListNode list2) {
+        if(list1==null) return list2;
+        if(list2==null) return list1;
+
+        if(list1.val <= list2.val) {
+            list1.next = mergeTwoLists(list1.next, list2);
+            return list1;
+        }
+        else {/*  */
+            list2.next = mergeTwoLists(list1, list2.next);
+            return list2;
+        }
+    }
+}
+