Re: [心得] 學界轉業界...google面試洗臉心得
※ 引述《ku72 (ku72)》之銘言：
: const char* str[]={Fizz Buzz 相關定義到15個}:
: for (int i=0;i<上限;++i){
: printf (str[i&0xF]);
: }
: 要求效率的話 我會這樣打
: 首先15=0xF 上限在可以用位元表示的
: 用%沒有位元處理
: 當然也有機車一點的
: const char* str ="Fizz\n ..... 把1~15都定義好";
: for (.......每次加15){
: printf (str);
: }
: 這種題目都是想看看
: 被測試者的腦袋靈活度
: 所以 用點不太正常方式其實是被接受的
: 捷運上隨便打的
: 具體思路應該是對的
: 語法不保證xd
快下班時看到這題，可能是leetcode刷得不夠多，還沒看過，覺得還滿有趣的XD
不知道可不可以用c++和STL，可以的話我會這樣做
#include <iostream>
#include <algorithm>
#include <unordered_map>
#include <functional>
using namespace std;
typedef function<void(void)> Handler;
typedef unordered_map<int, Handler> Handlers;
int main()
{
vector<int> target = { 3,5 };
int max = 50;
Handlers handlers;
Handler handle3 = []() {cout << "Fizz"; };
Handler handle5 = []() {cout << "Buzz"; };
handlers[3] = handle3;
handlers[5] = handle5;
auto check = [](int checker, int checked, Handlers handlers)->int
{
if (checked%checker == 0 && checked != 0) { handlers[checker](); return 1; }
else return 0;
};
auto _check = bind(check, placeholders::_1,placeholders::_2, handlers);
int flag = 0;
for (int I = 0; I < max; I++)
{
for (auto J : target)
{
flag|=_check(J, I);
}
if (flag == 0)
{
cout << I << endl;
}
else cout << endl;
flag = 0;
}
}
原本的bug修好了
Java應該也可以用類似的作法，但小弟Java不是很熟
借問一下各位前輩Java的話是不是就要先定義一個Interface
然用不同的Implemented Class才能像C++的func obj這樣的用法?
--
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※ 編輯: w0005151 (1.171.87.248), 04/20/2017 17:26:39
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※ 編輯: w0005151 (1.171.87.248), 04/20/2017 19:39:44
※ 編輯: w0005151 (1.171.87.248), 04/20/2017 19:47:37
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