https://leetcode.cn/problems/smallest-even-multiple/ https://leetcode.cn/problems/design-underground-system/

Author: masx200

README.md

@@ -10,6 +10,10 @@ leetcode 测试
 
 ##### 包含的内容如下
 
+https://leetcode.cn/problems/smallest-even-multiple/
+
+https://leetcode.cn/problems/design-underground-system/
+
 https://leetcode.cn/problems/strictly-palindromic-number/
 
 https://leetcode.cn/problems/stone-game/

design-underground-system/index.ts

@@ -0,0 +1,13 @@
+export default class UndergroundSystem {
+    constructor() {
+    }
+
+    checkIn(id: number, stationName: string, t: number): void {
+    }
+
+    checkOut(id: number, stationName: string, t: number): void {
+    }
+
+    getAverageTime(startStation: string, endStation: string): number {
+    }
+}

smallest-even-multiple/index.ts

@@ -0,0 +1,3 @@
+export default function smallestEvenMultiple(n: number): number {
+    return n & 1 ? 2 * n : n;
+}