diff --git a/solution/0500-0599/0503.Next Greater Element II/README.md b/solution/0500-0599/0503.Next Greater Element II/README.md
index f8ff85b4ce89c..6b80bfc144870 100644
--- a/solution/0500-0599/0503.Next Greater Element II/README.md	
+++ b/solution/0500-0599/0503.Next Greater Element II/README.md	
@@ -80,7 +80,7 @@ class Solution {
     let res = new Array(n).fill(-1);
     for (let i = 0; i < 2 * n; i++) {
         let cur = nums[i % n];
-        while(stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
+        while (stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
             res[stack.pop()] = cur;
         }
         stack.push(i % n);
diff --git a/solution/0500-0599/0503.Next Greater Element II/README_EN.md b/solution/0500-0599/0503.Next Greater Element II/README_EN.md
index cc7cb0dece2cf..5f19dcbf73614 100644
--- a/solution/0500-0599/0503.Next Greater Element II/README_EN.md	
+++ b/solution/0500-0599/0503.Next Greater Element II/README_EN.md	
@@ -87,7 +87,7 @@ class Solution {
     let res = new Array(n).fill(-1);
     for (let i = 0; i < 2 * n; i++) {
         let cur = nums[i % n];
-        while(stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
+        while (stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
             res[stack.pop()] = cur;
         }
         stack.push(i % n);
diff --git a/solution/0500-0599/0503.Next Greater Element II/Solution.js b/solution/0500-0599/0503.Next Greater Element II/Solution.js
index 303f8d0ed8a6b..6291cc48945d8 100644
--- a/solution/0500-0599/0503.Next Greater Element II/Solution.js	
+++ b/solution/0500-0599/0503.Next Greater Element II/Solution.js	
@@ -8,7 +8,7 @@
     let res = new Array(n).fill(-1);
     for (let i = 0; i < 2 * n; i++) {
         let cur = nums[i % n];
-        while(stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
+        while (stack.length > 0 && nums[stack[stack.length - 1]] < cur) {
             res[stack.pop()] = cur;
         }
         stack.push(i % n);