feat: add typescript solution to lc problem: No0217.Contains Duplicate (doocs#495)

zhaocchen · web-flow · commit ccb5dd276977 · 2021-07-03T10:49:09.000+08:00
diff --git a/solution/0200-0299/0217.Contains Duplicate/README.md b/solution/0200-0299/0217.Contains Duplicate/README.md
@@ -64,6 +64,15 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function containsDuplicate(nums: number[]): boolean {
+    let unique: Set<number> = new Set(nums);
+    return unique.size != nums.length;
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/0200-0299/0217.Contains Duplicate/README_EN.md b/solution/0200-0299/0217.Contains Duplicate/README_EN.md
@@ -53,6 +53,15 @@ class Solution {
 }
 ```
 
+### **TypeScript**
+
+```ts
+function containsDuplicate(nums: number[]): boolean {
+    let unique: Set<number> = new Set(nums);
+    return unique.size != nums.length;
+};
+```
+
 ### **...**
 
 ```
diff --git a/solution/0200-0299/0217.Contains Duplicate/Solution.ts b/solution/0200-0299/0217.Contains Duplicate/Solution.ts
@@ -0,0 +1,4 @@
+function containsDuplicate(nums: number[]): boolean {
+    let unique: Set<number> = new Set(nums);
+    return unique.size != nums.length;
+};
