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 
#include 
#include 
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(){
		vectorint> > 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;isize();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

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 > 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
   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？