feat: add js solution to lc problem: No.0496. Next Greater Element I (doocs#379)

Author: zhaocchen

solution/0400-0499/0496.Next Greater Element I/README.md

@@ -99,6 +99,28 @@ class Solution {
 }
 ```
 
+### **JavaScript**
+
+```js
+/**
+ * @param {number[]} nums1
+ * @param {number[]} nums2
+ * @return {number[]}
+ */
+var nextGreaterElement = function(nums1, nums2) {
+    let stack = [];
+    let nextBigger = {};
+    for (let num of nums2) {
+        while(stack.length > 0 && stack[stack.length - 1] < num) {
+            nextBigger[stack.pop()] = num;
+        }
+        stack.push(num);
+    }
+    let res = nums1.map(d => nextBigger[d] || -1);
+    return res;
+};
+```
+
 ### **...**
 
 ```

solution/0400-0499/0496.Next Greater Element I/README_EN.md

@@ -84,6 +84,28 @@ class Solution {
 }
 ```
 
+### **JavaScript**
+
+```js
+/**
+ * @param {number[]} nums1
+ * @param {number[]} nums2
+ * @return {number[]}
+ */
+var nextGreaterElement = function(nums1, nums2) {
+    let stack = [];
+    let nextBigger = {};
+    for (let num of nums2) {
+        while(stack.length > 0 && stack[stack.length - 1] < num) {
+            nextBigger[stack.pop()] = num;
+        }
+        stack.push(num);
+    }
+    let res = nums1.map(d => nextBigger[d] || -1);
+    return res;
+};
+```
+
 ### **...**
 
 ```

solution/0400-0499/0496.Next Greater Element I/Solution.js

@@ -0,0 +1,17 @@
+/**
+ * @param {number[]} nums1
+ * @param {number[]} nums2
+ * @return {number[]}
+ */
+ var nextGreaterElement = function(nums1, nums2) {
+    let stack = [];
+    let nextBigger = {};
+    for (let num of nums2) {
+        while(stack.length > 0 && stack[stack.length - 1] < num) {
+            nextBigger[stack.pop()] = num;
+        }
+        stack.push(num);
+    }
+    let res = nums1.map(d => nextBigger[d] || -1);
+    return res;
+};