Merge pull request neetcode-gh#362 from Chrislee1996/main

Added 199-binary-tree-right-side-view Javascript Solution

Author: neetcode-gh

javascript/199-binary-tree-right-side-view.js

@@ -0,0 +1,35 @@
+/**
+ * Definition for a binary tree node.
+ * function TreeNode(val, left, right) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.left = (left===undefined ? null : left)
+ *     this.right = (right===undefined ? null : right)
+ * }
+ */
+/**
+ * @param {TreeNode} root
+ * @return {number[]}
+ */
+ var rightSideView = function(root) {
+    let result = []
+    let queue = []
+    
+    if (root === null) {
+        return []
+    }
+    
+    queue.push(root)
+    
+    while(queue.length > 0){
+        let length = queue.length
+        for (let i = 0 ; i < length ; i++) {
+            let node = queue.shift()
+            if (i === length - 1) {
+                result.push(node.val)
+            }
+            if (node.left !== null) queue.push(node.left)
+            if (node.right !== null) queue.push(node.right)
+        }
+    }
+    return result
+};