length()和str.length()区别
时间: 2023-06-02 10:05:43 浏览: 69
length() 是用于计算数组或字符串的长度的函数,而 str.length() 是用于计算字符串的长度的方法。具体来说,length() 可以计算数组的长度(即包含的元素个数),也可以计算字符串的长度(即包含的字符个数);而 str.length() 只能计算字符串的长度。
相关问题
str.spilt().length
This statement is incomplete and does not make sense on its own. It seems like it is missing some code or context.
The ".split()" method is used to split a string into an array of substrings based on a specified separator. The "length" property is used to determine the number of elements in an array.
So, if we have a string "Hello, World!" and we use the ".split()" method to split it based on the comma separator, like this:
```
var string = "Hello, World!";
var array = string.split(",");
console.log(array.length);
```
The output will be 2, because the original string was split into two substrings - "Hello" and " World!". So, the code above will log the length of the resulting array, which is 2.
Scanner in = new Scanner(System.in); //先判断类 String task = "SystemFramework"; String dity = "GroupLeader"; String str = in.next(); int length = str.length; 有什么错误
您需要将 `length` 替换为 `length()`,因为 `length()` 是用于获取字符串长度的方法。另外,如果您计划读取多个输入,而不仅仅是一个字符串,请使用 `nextLine()` 方法而不是 `next()` 方法,因为 `next()` 方法只会读取下一个单词(由空格分隔),而 `nextLine()` 方法会读取整行输入。以下是修改后的代码:
```
Scanner in = new Scanner(System.in);
String task = "SystemFramework";
String dity = "GroupLeader";
String str = in.nextLine();
int length = str.length();
```
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