diff --git a/solution/2100-2199/2149.Rearrange Array Elements by Sign/README.md b/solution/2100-2199/2149.Rearrange Array Elements by Sign/README.md
index 057dcc4ec8204..ff3554b786625 100644
--- a/solution/2100-2199/2149.Rearrange Array Elements by Sign/README.md	
+++ b/solution/2100-2199/2149.Rearrange Array Elements by Sign/README.md	
@@ -152,7 +152,20 @@ func rearrangeArray(nums []int) []int {
 <!-- 这里可写当前语言的特殊实现逻辑 -->
 
 ```ts
-
+function rearrangeArray(nums: number[]): number[] {
+    let ans = [];
+    let i = 0, j = 1;
+    for (let num of nums) {
+        if (num > 0) {
+            ans[i] = num;
+            i += 2;
+        } else {
+            ans[j] = num;
+            j += 2;
+        }
+    }
+    return ans;
+};
 ```
 
 ### **...**
diff --git a/solution/2100-2199/2149.Rearrange Array Elements by Sign/README_EN.md b/solution/2100-2199/2149.Rearrange Array Elements by Sign/README_EN.md
index d7d9381193f7b..7435c58dbf516 100644
--- a/solution/2100-2199/2149.Rearrange Array Elements by Sign/README_EN.md	
+++ b/solution/2100-2199/2149.Rearrange Array Elements by Sign/README_EN.md	
@@ -140,7 +140,20 @@ func rearrangeArray(nums []int) []int {
 ### **TypeScript**
 
 ```ts
-
+function rearrangeArray(nums: number[]): number[] {
+    let ans = [];
+    let i = 0, j = 1;
+    for (let num of nums) {
+        if (num > 0) {
+            ans[i] = num;
+            i += 2;
+        } else {
+            ans[j] = num;
+            j += 2;
+        }
+    }
+    return ans;
+};
 ```
 
 ### **...**
diff --git a/solution/2100-2199/2149.Rearrange Array Elements by Sign/Solution.ts b/solution/2100-2199/2149.Rearrange Array Elements by Sign/Solution.ts
new file mode 100644
index 0000000000000..2d97ecab280aa
--- /dev/null
+++ b/solution/2100-2199/2149.Rearrange Array Elements by Sign/Solution.ts	
@@ -0,0 +1,14 @@
+function rearrangeArray(nums: number[]): number[] {
+    let ans = [];
+    let i = 0, j = 1;
+    for (let num of nums) {
+        if (num > 0) {
+            ans[i] = num;
+            i += 2;
+        } else {
+            ans[j] = num;
+            j += 2;
+        }
+    }
+    return ans;
+};
\ No newline at end of file