Added solution for LeetCode 110 - Balanced Binary Tree (C++)

C++/balanced_binary_tree.cpp

@@ -0,0 +1,30 @@
+/**
+ * Definition for a binary tree node.
+ * struct TreeNode {
+ *     int val;
+ *     TreeNode *left;
+ *     TreeNode *right;
+ *     TreeNode() : val(0), left(nullptr), right(nullptr) {}
+ *     TreeNode(int x) : val(x), left(nullptr), right(nullptr) {}
+ *     TreeNode(int x, TreeNode *left, TreeNode *right) : val(x), left(left), right(right) {}
+ * };
+ */
+class Solution {
+public:
+
+int height(TreeNode* root){
+    if(root==NULL) return 0;
+    int l=height(root->left);
+    if(l==-1) return -1;
+    int r=height(root->right);
+    if(r==-1) return -1;
+    if(abs(l-r)>1) return -1;
+    return 1+max(l,r);
+}
+    bool isBalanced(TreeNode* root) {
+        if(root==NULL){
+            return true;
+        }
+        return height(root)!=-1;
+    }
+};

README.md

@@ -517,6 +517,8 @@ DISCLAIMER: This above mentioned resources have affiliate links, which means if
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 |  [Amrit Kumar](https://github.com/amrit-GH23) <br> <img src="https://avatars.githubusercontent.com/u/146119347?s=400&u=599ba9f51c94e08861dc01580db03fadde609ad8&v=4" width="100"  height="100">      | India          | C++                 | [CodeChef](https://www.codechef.com/users/amrit_kumar08)<br/>[Linkedin](https://www.linkedin.com/in/amrit-kumar-28053b253/)
+| [Yaswanth](https://github.com/yaswanthkurri) <br> <img src="https://avatars.githubusercontent.com/u/187052558?v=4" width="100" height="100"> | India | C++ | [GitHub](https://github.com/yaswanthkurri) |
+
 
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