feat: add typescript solution to lc problem: No.0989

No.0989.Add to Array-Form of Integer

Author: zhaocchen

solution/0900-0999/0989.Add to Array-Form of Integer/README.md

@@ -104,6 +104,23 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function addToArrayForm(num: number[], k: number): number[] {
+    let arr2 = [...String(k)].map(Number);
+    let ans = [];
+    let sum = 0;
+    while (num.length || arr2.length || sum) {
+        let a = num.pop() || 0, b = arr2.pop() || 0;
+        sum += (a + b);
+        ans.unshift(sum % 10);
+        sum = Math.floor(sum / 10);
+    }
+    return ans;
+};
+```
+
 ### **...**
 
 ```

solution/0900-0999/0989.Add to Array-Form of Integer/README_EN.md

@@ -97,6 +97,23 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function addToArrayForm(num: number[], k: number): number[] {
+    let arr2 = [...String(k)].map(Number);
+    let ans = [];
+    let sum = 0;
+    while (num.length || arr2.length || sum) {
+        let a = num.pop() || 0, b = arr2.pop() || 0;
+        sum += (a + b);
+        ans.unshift(sum % 10);
+        sum = Math.floor(sum / 10);
+    }
+    return ans;
+};
+```
+
 ### **...**
 
 ```

solution/0900-0999/0989.Add to Array-Form of Integer/Solution.ts

@@ -0,0 +1,12 @@
+function addToArrayForm(num: number[], k: number): number[] {
+    let arr2 = [...String(k)].map(Number);
+    let ans = [];
+    let sum = 0;
+    while (num.length || arr2.length || sum) {
+        let a = num.pop() || 0, b = arr2.pop() || 0;
+        sum += (a + b);
+        ans.unshift(sum % 10);
+        sum = Math.floor(sum / 10);
+    }
+    return ans;
+};