feat: add typescript solution to lc problem: No.0402.Remove K Digits

Author: zhaocchen

solution/0400-0499/0402.Remove K Digits/README.md

@@ -44,6 +44,8 @@
 
 <!-- 这里可写通用的实现逻辑 -->
 
+贪心算法
+
 <!-- tabs:start -->
 
 ### **Python3**
@@ -62,6 +64,23 @@
 
 ```
 
+### **TypeScript**
+
+```ts
+function removeKdigits(num: string, k: number): string {
+    let nums = [...num];
+    while (k > 0) {
+        let idx = 0;
+        while (idx < nums.length - 1 && nums[idx + 1] >= nums[idx]) {
+            idx++;
+        }
+        nums.splice(idx, 1);
+        k--;
+    }
+    return nums.join('').replace(/^0*/g, '') || '0';
+};
+```
+
 ### **...**
 
 ```

solution/0400-0499/0402.Remove K Digits/README_EN.md

@@ -57,6 +57,23 @@
 
 ```
 
+### **TypeScript**
+
+```ts
+function removeKdigits(num: string, k: number): string {
+    let nums = [...num];
+    while (k > 0) {
+        let idx = 0;
+        while (idx < nums.length - 1 && nums[idx + 1] >= nums[idx]) {
+            idx++;
+        }
+        nums.splice(idx, 1);
+        k--;
+    }
+    return nums.join('').replace(/^0*/g, '') || '0';
+};
+```
+
 ### **...**
 
 ```

solution/0400-0499/0402.Remove K Digits/Solution.ts

@@ -0,0 +1,12 @@
+function removeKdigits(num: string, k: number): string {
+    let nums = [...num];
+    while (k > 0) {
+        let idx = 0;
+        while (idx < nums.length - 1 && nums[idx + 1] >= nums[idx]) {
+            idx++;
+        }
+        nums.splice(idx, 1);
+        k--;
+    }
+    return nums.join('').replace(/^0*/g, '') || '0';
+};