Merge Two Sorted Lists - Two Pointer (#159)

* Time needed to inform all employees

Time needed to inform all employees - Depth First Search.

* Update README.md

* Added Merge Two Sorted Lists - Two Pointer

* Updated Read Me

Author: POORVI111

C++/Merge-Two-Sorted-Lists.cpp

@@ -0,0 +1,41 @@
+// Time Complexity : O(n)
+// Space Complexity : O(1)
+
+
+
+Problem: Merge two sorted Lists
+
+
+/**
+ * Definition for singly-linked list.
+ * struct ListNode {
+ *     int val;
+ *     ListNode *next;
+ *     ListNode() : val(0), next(nullptr) {}
+ *     ListNode(int x) : val(x), next(nullptr) {}
+ *     ListNode(int x, ListNode *next) : val(x), next(next) {}
+ * };
+ */
+class Solution {
+public:
+    ListNode* mergeTwoLists(ListNode* l1, ListNode* l2) {
+    if(l1 == NULL)
+	return l2;
+		if(l2 == NULL)
+			return l1;
+    
+    if(l1 -> val <= l2 -> val)
+    {
+        l1 -> next = mergeTwoLists(l1 -> next, l2);
+        return l1;
+    }    
+    
+    else
+    {
+        l2 -> next = mergeTwoLists(l1, l2 -> next);
+        return l2;
+    }
+    }
+};
+
+

README.md

@@ -279,6 +279,7 @@ Check out ---> [Sample PR](https://github.com/codedecks-in/LeetCode-Solutions/pu
 | 4   | [Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/)     | [Java](./Java/median-of-two-sorted-arrays.java)                                                                        | _O(log(min(m,n)))_     | _O(1)_             | Hard       |             |                  |
 | 845 | [Longest Mountain in Array](https://leetcode.com/problems/longest-mountain-in-array/)         | [C++](./C++/Longest-Mountain-in-Array.cpp)                                                                             | _O(N)_                 | _O(1)_             | Medium     | Two Pointer |
 | 015 | [3 Sum](https://leetcode.com/problems/3sum/)                                                  | [C++](./C++/3sum.cpp)                                                                                                  | _O(N)_                 | _O(1)_             | Medium     | Two Pointer |                  |
+| 021 | [Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)               | [C++](./C++/Longest-Mountain-in-Array.cpp) | _O(N)_                 | _O(1)_             | Easy     | Two Pointer |                  |
 
 
 <br/>
@@ -335,7 +336,7 @@ Check out ---> [Sample PR](https://github.com/codedecks-in/LeetCode-Solutions/pu
 | 104  | [Maximum Depth of Binary Tree](https://leetcode.com/problems/maximum-depth-of-binary-tree/) | [python](./Python/maximum-depth-of-binary-tree.py) | _O(n)_      | _O(n)_      | Easy       | DFS |      |
 | 112 | [Path Sum](https://leetcode.com/problems/path-sum/) | [Java](./Java/path-sum.java) | _O(n)_ | _O(n)_ | Easy | DFS |     |
 | 110 | [Balanced Binary Tree](https://leetcode.com/problems/balanced-binary-tree/) | [Java](./Java/Balanced-Binary-Tree.java) | _O(n)_ | _O(n)_ | Easy | DFS |     |
-| 1376 | [ Time Needed to Inform All Employees] (https://leetcode.com/problems/time-needed-to-inform-all-employees/) | [C++] | _O(n)_ | _O(n)_ | Medium | DFS |     | 
+| 1376 | [ Time Needed to Inform All Employees](https://leetcode.com/problems/time-needed-to-inform-all-employees/) | [C++](./C++/Cherry-Pickup-II.cpp) | _O(n)_ | _O(n)_ | Medium | DFS |     |
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@@ -482,6 +483,11 @@ DISCLAIMER: This above mentioned resources have affiliate links, which means if
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 | [JeongDaHyeon](https://github.com/JeongDaHyeon) <br> <img src="https://avatars0.githubusercontent.com/u/48541114?s=460&v=4" width="100" height="100">              | South Korea | Java                 | [GitHub](https://github.com/JeongDaHyeon)                                                                                                                                                                                         | 
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+| [Poorvi Garg](https://github.com/POORVI111) <br> <img src="https://avatars.githubusercontent.com/u/68559217?s=400&v=4" width="100" height="100"> | India | C++ | [GitHub](https://github.com/POORVI111)
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