From 7b785ab004eaa2635980a96ee543cbe65f4852de Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Thu, 13 Jan 2022 22:14:12 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880383.=E8=B5=8E?=
 =?UTF-8?q?=E9=87=91=E4=BF=A1.md=EF=BC=89=EF=BC=9A=E5=A2=9E=E5=8A=A0typesc?=
 =?UTF-8?q?ript=E7=89=88=E6=9C=AC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 problems/0383.赎金信.md | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/problems/0383.赎金信.md b/problems/0383.赎金信.md
index 650f2a99..31e19b10 100644
--- a/problems/0383.赎金信.md
+++ b/problems/0383.赎金信.md
@@ -264,6 +264,27 @@ var canConstruct = function(ransomNote, magazine) {
 };
 ```
 
+TypeScript:
+
+```typescript
+function canConstruct(ransomNote: string, magazine: string): boolean {
+    let helperArr: number[] = new Array(26).fill(0);
+    let base: number = 'a'.charCodeAt(0);
+    let index: number;
+    for (let i = 0, length = magazine.length; i < length; i++) {
+        helperArr[magazine[i].charCodeAt(0) - base]++;
+    }
+    for (let i = 0, length = ransomNote.length; i < length; i++) {
+        index = ransomNote[i].charCodeAt(0) - base;
+        helperArr[index]--;
+        if (helperArr[index] < 0) {
+            return false;
+        }
+    }
+    return true;
+};
+```
+
 
 PHP:
 ```php