diff --git a/solution/1300-1399/1306.Jump Game III/README.md b/solution/1300-1399/1306.Jump Game III/README.md
index f2eeb23eaf36e..c2d8602c1b639 100644
--- a/solution/1300-1399/1306.Jump Game III/README.md	
+++ b/solution/1300-1399/1306.Jump Game III/README.md	
@@ -180,19 +180,16 @@ func canReach(arr []int, start int) bool {
 
 ```ts
 function canReach(arr: number[], start: number): boolean {
-    const q: number[] = [start];
-    while (q.length) {
-        const i: number = q.shift()!;
+    const q = [start];
+    for (const i of q) {
         if (arr[i] === 0) {
             return true;
         }
-        const x: number = arr[i];
-        arr[i] = -1;
-        for (const j of [i + x, i - x]) {
-            if (j >= 0 && j < arr.length && arr[j] !== -1) {
-                q.push(j);
-            }
+        if (arr[i] === -1 || arr[i] === undefined) {
+            continue;
         }
+        q.push(i + arr[i], i - arr[i]);
+        arr[i] = -1;
     }
     return false;
 }
diff --git a/solution/1300-1399/1306.Jump Game III/README_EN.md b/solution/1300-1399/1306.Jump Game III/README_EN.md
index d953b2027badf..e50adc18433f1 100644
--- a/solution/1300-1399/1306.Jump Game III/README_EN.md	
+++ b/solution/1300-1399/1306.Jump Game III/README_EN.md	
@@ -169,19 +169,16 @@ func canReach(arr []int, start int) bool {
 
 ```ts
 function canReach(arr: number[], start: number): boolean {
-    const q: number[] = [start];
-    while (q.length) {
-        const i: number = q.shift()!;
+    const q = [start];
+    for (const i of q) {
         if (arr[i] === 0) {
             return true;
         }
-        const x: number = arr[i];
-        arr[i] = -1;
-        for (const j of [i + x, i - x]) {
-            if (j >= 0 && j < arr.length && arr[j] !== -1) {
-                q.push(j);
-            }
+        if (arr[i] === -1 || arr[i] === undefined) {
+            continue;
         }
+        q.push(i + arr[i], i - arr[i]);
+        arr[i] = -1;
     }
     return false;
 }
diff --git a/solution/1300-1399/1306.Jump Game III/Solution.ts b/solution/1300-1399/1306.Jump Game III/Solution.ts
index de84eb9fc180b..8d5ffe84b9914 100644
--- a/solution/1300-1399/1306.Jump Game III/Solution.ts	
+++ b/solution/1300-1399/1306.Jump Game III/Solution.ts	
@@ -1,17 +1,14 @@
 function canReach(arr: number[], start: number): boolean {
-    const q: number[] = [start];
-    while (q.length) {
-        const i: number = q.shift()!;
+    const q = [start];
+    for (const i of q) {
         if (arr[i] === 0) {
             return true;
         }
-        const x: number = arr[i];
-        arr[i] = -1;
-        for (const j of [i + x, i - x]) {
-            if (j >= 0 && j < arr.length && arr[j] !== -1) {
-                q.push(j);
-            }
+        if (arr[i] === -1 || arr[i] === undefined) {
+            continue;
         }
+        q.push(i + arr[i], i - arr[i]);
+        arr[i] = -1;
     }
     return false;
 }