feat: add typescript solution to lc problem: No.2149

No.2149.Rearrange Array Elements by Sign

Author: zhaocchen

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;
+};
 ```
 
 ### **...**

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;
+};
 ```
 
 ### **...**

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;
+};