feat: add typescript solution to lc problem: No.2288

No.2288.Apply Discount to Prices

Author: zhaocchen

solution/2200-2299/2288.Apply Discount to Prices/README.md

@@ -114,7 +114,17 @@ class Solution {
 ### **TypeScript**
 
 ```ts
-
+function discountPrices(sentence: string, discount: number): string {
+    const sell = (100 - discount) / 100;
+    let reg = new RegExp(/^(\$)(([1-9]\d*\.?\d*)|(0\.\d*))$/g);
+    let arr = sentence.split(' ').map(d => {
+        if (!reg.test(d)) return d;
+        return d.replace(reg, (s, $1, $2) => {
+            return `$${(sell * $2).toFixed(2)}`;
+        });
+    });
+    return arr.join(' ');
+};
 ```
 
 ### **...**

solution/2200-2299/2288.Apply Discount to Prices/README_EN.md

@@ -103,7 +103,17 @@ class Solution {
 ### **TypeScript**
 
 ```ts
-
+function discountPrices(sentence: string, discount: number): string {
+    const sell = (100 - discount) / 100;
+    let reg = new RegExp(/^(\$)(([1-9]\d*\.?\d*)|(0\.\d*))$/g);
+    let arr = sentence.split(' ').map(d => {
+        if (!reg.test(d)) return d;
+        return d.replace(reg, (s, $1, $2) => {
+            return `$${(sell * $2).toFixed(2)}`;
+        });
+    });
+    return arr.join(' ');
+};
 ```
 
 ### **...**

solution/2200-2299/2288.Apply Discount to Prices/Solution.ts

@@ -0,0 +1,11 @@
+function discountPrices(sentence: string, discount: number): string {
+    const sell = (100 - discount) / 100;
+    let reg = new RegExp(/^(\$)(([1-9]\d*\.?\d*)|(0\.\d*))$/g);
+    let arr = sentence.split(' ').map(d => {
+        if (!reg.test(d)) return d;
+        return d.replace(reg, (s, $1, $2) => {
+            return `$${(sell * $2).toFixed(2)}`;
+        });
+    });
+    return arr.join(' ');
+};