按字母顺序对字符串数组进行排序 [英] Sort an array of strings alphabetically

问题描述

考虑到每个字符串的情况，我需要对字母数组进行排序，更具体一点，我想先写大写字母，我该怎么做？我找到了一个处理这个的解决方案，但有一个我不知道如何解决的错误：

  var  arr = [  T，  h，  e，  c， < span class =code-string> a，  t，  s，  a，  t，  o，  n，  t，  h，  e，  m ，  a，  t]; 
 arr.sort（ function （a，b）
 {
  var  x = a.toLowerCase（），y = b.toLowerCase（）; 
 
  if （x< y）{ return  -1} 
  else   if  （x> y）{返回  1 } 
  else  { return   0 }; 
}）;  //    - > [a，a，a，c，e，e，h，h，m，n，o，s， t，T，t，t，t]  

为什么首都在名单上排名第一T的意思是这样的：

 [a，a，a，c，e，e， h，h，m，n，o，s，T，t，t，t，t] 

PS我很抱歉以前令人困惑的问题。我正在尝试根据案例对数组进行排序。



我尝试了什么：

。排序（ function （a，b）{
  return  a.toLowerCase（）。localeCompare（b.toLowerCase（））; 
}）; 

输出相同

解决方案

Quote：

为什么大写T不会先行？

它不会先走，因为你这样问。

很难想到这段代码是你的！ 3行，你不明白代码。



这是功课，所以你必须找到自己的错误。

建议：阅读代码，问题应该是显而易见的。如果您不理解某些内容，请搜索定义和用法。

首先要了解自己：

1. JavaScript String toLowerCase（）方法 [ ^ ]吗？

2. Ascii表 - ASCII字符代码和html，八进制，十六进制和十进制图表转换 [ ^ ]

然后仔细研究 JavaScript Array sort（）方法 [ ^ ]

I would need to sort an array of letters considering the case of each string, to be more specific, I want upper case letters to go first, how can I do this? I found a solution that handles this but there is one bug that I don`t know how to fix:

var arr = ["T", "h", "e", "c", "a", "t", "s", "a", "t", "o", "n", "t", "h", "e", "m", "a", "t"];
arr.sort(function(a, b)
{
    var x = a.toLowerCase(), y = b.toLowerCase();
    
    if(x < y) {return -1}
    else if (x > y ) {return 1} 
    else {return 0};
}); //-> ["a", "a", "a", "c", "e", "e", "h", "h", "m", "n", "o", "s", "t", "T", "t", "t", "t"]

Why won`t the capital t be first on the list of 'T'`s, like this :

["a", "a", "a", "c", "e", "e", "h", "h", "m", "n", "o", "s",  "T", "t", "t", "t", "t"]

P.S I am sorry for previous confusing question. I am trying to sort an array according to the case.

What I have tried:

.sort(function (a, b) {
    return a.toLowerCase().localeCompare(b.toLowerCase());
});

The output is the same

解决方案

Quote:

Why capital T doesn't go first?

It don't go first because you asked it this way.
It is hard to think this code is yours! 3 lines and you don't understand the code.

This is homework, so you have to find yourself what is wrong.
Advice: read the code, the problem should be obvious. If you don't understand something, search for definition and usage.

Help yourself by first understand:
1. What does JavaScript String toLowerCase() Method[^] do?
2. Ascii Table - ASCII character codes and html, octal, hex and decimal chart conversion[^]
Then study carefully JavaScript Array sort() Method[^]

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