1/* 2 * Copyright (c) 2023 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the 'License'); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an 'AS IS' BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16import assert = require('assert'); 17 18let suits = ['hearts', 'spades', 'clubs', 'diamonds']; 19 20function pickCard(x: { suit: string; card: number; }[]): number; 21function pickCard(x: number): { suit: string; card: number; }; 22function pickCard(x): any { 23 if (typeof x === 'object') { 24 return Math.floor(0.5 * x.length); 25 } 26 // Otherwise just let them pick the card 27 else if (typeof x === 'number') { 28 let pickedSuit = Math.floor(x / 13); 29 return {suit: suits[pickedSuit], card: x % 13}; 30 } 31} 32 33let myDeck = [{suit: 'diamonds', card: 2}, {suit: 'spades', card: 10}, {suit: 'hearts', card: 4}]; 34let pickedCard1 = myDeck[pickCard(myDeck)]; 35 36assert(pickedCard1.card === 10, 'success'); 37assert(pickedCard1.suit === 'spades', 'success'); 38 39let pickedCard2 = pickCard(15); 40 41 42assert(pickedCard2.card === 2, 'success'); 43assert(pickedCard2.suit === 'spades', 'success');