c++、php、java、python、javascript对比，同一功能用5种编程语言写一遍，谁才是最好的编程语言？

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c++、php、java、python、javascript对比，同一功能用5种编程语言写一遍，谁才是最好的编程语言？

感觉编程语言里面，大家使用最多的就是这几种了吧，最火的是JavaScript，python好像说是无所不能，php没悬念还是世界上最好的编程语言，java用的人应该最多吧，c++吗，据说比较难，所以就是逼格最高的语言吧。

其实这几种语言，除了python，其他几个还都有共通之处，都是带花括号（{}）的C系语法，而python吧，不带花括号，感觉和之前的VBscript有点像，废话不多说，今天就用这5种语言写同一个功能，我一会分别把代码粘出来，大家对语法做一下比较，看看更喜欢那种？

昨天闲聊群里有人发了一串JavaScript代码，功能呢就是在控制台输出用字符拼出的字符画“V ME 50”，v me 50算是最近很火的一个梗了，运行效果如下图

 代码如下：

const arr = [   [1, 9, 12, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44],   [2, 8, 12, 13, 19, 20, 23, 31, 39, 44],   [3, 7, 12, 14, 18, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 44],   [4, 6, 12, 15, 17, 20, 23, 36, 39, 44],   [5, 5, 12, 16, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44], ]; function demo(arr) {   let str = '';   for (let i = 0; i < arr.length; i++) {     for (j = 0; j < 50; j++) {       if (arr[i].indexOf(j) > -1) {         str += '█';       } else {         str += ' ';       }     }     str += '\\n';   }   return str; } console.log(demo(arr));

看着挺有意思吧，然后我把这段代码移植到了C++上，代码和效果如下：

#include <iostream> #include <string> #include <vector> using namespace std; class vMe50{ private: template <typename T> int arrLen(T& arr){ return sizeof(arr)/sizeof(arr[0]); } public: vMe50(){ string str=this->demo(); cout << str; } string demo(){ vector<vector<int> > arr; int a0[]={1, 9, 12, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44}; int a1[]={2, 8, 12, 13, 19, 20, 23, 31, 39, 44}; int a2[]={3, 7, 12, 14, 18, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 44}; int a3[]={4, 6, 12, 15, 17, 20, 23, 36, 39, 44}; int a4[]={5, 5, 12, 16, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44}; vector<int> b0(a0,a0+this->arrLen(a0)); vector<int> b1(a1,a1+this->arrLen(a1)); vector<int> b2(a2,a2+this->arrLen(a2)); vector<int> b3(a3,a3+this->arrLen(a3)); vector<int> b4(a4,a4+this->arrLen(a4)); arr.push_back(b0); arr.push_back(b1); arr.push_back(b2); arr.push_back(b3); arr.push_back(b4); string str; for(short i=0;i<arr.size();i++){ for(short j=0;j<50;j++){ if(count(arr[i].begin(), arr[i].end(), j)){ str+="0"; }else{ str+=" "; } } str+="\\n"; } return str; } }; int main(){ vMe50* v=new vMe50(); delete v; return true; }

效果一样，但代码麻烦了不少，毕竟C++是强类型语言，处理不规则数组不像JavaScript那样轻松。 

然后我又把代码移植到了世界上最好的编程语言php上，大家看下优不优雅，代码和效果如下

<?php namespace vMe50; class vMe50{ public function __construct(){ echo $this->demo(); } private function demo(){ $arr=[ [1, 9, 12, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44], [2, 8, 12, 13, 19, 20, 23, 31, 39, 44], [3, 7, 12, 14, 18, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 44], [4, 6, 12, 15, 17, 20, 23, 36, 39, 44], [5, 5, 12, 16, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44],]; $str=""; foreach($arr as $key=>&$value){ foreach(range(0,50) as $k=>&$v){ if(in_array($v, $value)){ $str.="8"; }else{ $str.=" "; } } $str.="\\n"; } return $str; } } new vMe50();

 确实比C++版简单不少，毕竟php的array实现了各种类型的数组。

然后我又把代码用java重写一遍，代码和效果如下：

import java.util.Arrays; import java.util.List; import java.util.LinkedList; public class vMe50{ public static void main(String[] args){ System.out.print( demo() ); } private static String demo(){ List<List<Integer> > arr=new LinkedList<>(); arr.add(new LinkedList<>(Arrays.asList(1, 9, 12, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44))); arr.add(new LinkedList<>(Arrays.asList(2, 8, 12, 13, 19, 20, 23, 31, 39, 44))); arr.add(new LinkedList<>(Arrays.asList(3, 7, 12, 14, 18, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 44))); arr.add(new LinkedList<>(Arrays.asList(4, 6, 12, 15, 17, 20, 23, 36, 39, 44))); arr.add(new LinkedList<>(Arrays.asList(5, 5, 12, 16, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44))); String str=""; for(int i=0;i<arr.size();i++){ for(int j=0;j<50;j++){ if(arr.get(i).contains(j)){ str+="8"; }else{ str+=" "; } } str+="\\n"; } return str; } }

 最后就再用无所不能的python语言重写一遍吧，代码和效果如下：

class vMe50: def __init__(self): print(self.demo()) def demo(self): arr=( (1, 9, 12, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44), (2, 8, 12, 13, 19, 20, 23, 31, 39, 44), (3, 7, 12, 14, 18, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 44), (4, 6, 12, 15, 17, 20, 23, 36, 39, 44), (5, 5, 12, 16, 20, 23, 24, 25, 26, 27, 28, 31, 32, 33, 34, 35, 36, 39, 40, 41, 42, 43, 44) ) str="" for i in arr: for j in range(0,50): if j in i: str+="8" else: str+=" " str+="\\n"; return str v=vMe50();

 

虽然我个人不喜欢python，因为他没有花括号，但感觉他确实diao，这几个版本里代码量最小，甚至比JavaScript还简单。

以上就是c++、php、java、python、javascript这五种编程语言语法的对比，到底谁才是最好的编程语言？

本文标签： 编程语言最好的才是一遍功能