Add more data to merge_two_sorted_lists

Author: 0x61nas

easy/merge_two_sorted_lists/NOTE.md

@@ -0,0 +1 @@
+## There is no note for this problem yet ¯⁠⁠⁠\(⁠ツ⁠)⁠⁠/⁠¯

easy/merge_two_sorted_lists/README.md

@@ -0,0 +1,57 @@
+# Merge two sorted lists
+You are given the heads of two sorted linked lists `list1` and `list2`.
+
+
+Merge the two lists in a one **sorted** list. The list should be made by splicing together the nodes of the first two lists.
+
+
+Return *the head of the merged linked list*.
+
+
+ 
+
+
+**Example 1:**
+
+
+![](./images/merge_ex1.jpg)
+
+```
+**Input:** list1 = [1,2,4], list2 = [1,3,4]
+**Output:** [1,1,2,3,4,4]
+
+```
+
+**Example 2:**
+
+
+
+```
+**Input:** list1 = [], list2 = []
+**Output:** []
+
+```
+
+**Example 3:**
+
+
+
+```
+**Input:** list1 = [], list2 = [0]
+**Output:** [0]
+
+```
+
+ 
+
+
+**Constraints:**
+
+
+* The number of nodes in both lists is in the range `[0, 50]`.
+* `-100 <= Node.val <= 100`
+* Both `list1` and `list2` are sorted in **non-decreasing** order.
+
+
+
+- [Problem URL](https://leetcode.com/problems/merge-two-sorted-lists)