String THREE_WITH= "(((\\w)\\1{2})|(\\w{1,2}(\\w)\\1{2})|((\\w)\\2{2}\\w{1,2}))+"; System.out.println("999B".matches(RegularExpression.THREE_WITH));
时间: 2023-07-21 16:52:09 浏览: 28
这段代码使用了正则表达式来匹配一个字符串是否符合某个规则。其中使用了一些正则表达式的语法,如`\w`表示匹配任意一个字母、数字或下划线,`{1,2}`表示前面的字符或字符集合连续出现1到2次,`|`表示或的关系,`()`表示分组等。整个表达式的意思是匹配一个字符串,其中包含某个字符连续出现3次,或者包含某个字符连续出现2次,然后又出现了一个不同的字符,最后又出现了连续3次的相同字符,或者包含某个字符连续出现3次,然后又出现了任意1到2个字符,这个模式可以重复出现。最后,这段代码将这个正则表达式应用到一个字符串"999B"上,并输出匹配的结果,如果匹配则输出true,否则输出false。
相关问题
disabled: car_type == 2 || cValue.length < 6 || (type === 1 && index < 6) || type === 3这段代码什么意思
&& cValue.length > 10)
Explanation:
This is a boolean expression used to determine whether a certain condition is true or false. It consists of three conditions connected by logical operators (|| and &&).
1. car_type == 2: This condition checks whether the value of car_type is equal to 2. If it is, the condition evaluates to true.
2. cValue.length < 6: This condition checks whether the length of the string stored in the variable cValue is less than 6. If it is, the condition evaluates to true.
3. (type === 1 && cValue.length > 10): This condition checks two things. First, it checks whether the value of type is equal to 1. If it is not, this part of the condition is false. If it is, the condition checks whether the length of the string stored in cValue is greater than 10. If it is, this part of the condition is true.
The entire expression is formed by connecting these three conditions with logical operators. The || operator means "or", so the expression evaluates to true if any of the conditions is true. The && operator means "and", so both conditions must be true for this part of the expression to be true.
Therefore, the disabled attribute will be applied if either the car_type is 2, or the length of cValue is less than 6, or the type is 1 and the length of cValue is greater than 10.
disabled: car_type == 2 || cValue.length < 6 || (type === 1 && index < 6) || type === 3实现了什么效果
&& cValue.length > 10)
Explanation:
This is a conditional statement that checks if a car is disabled based on three conditions:
1. car_type == 2: This checks if the car type is equal to 2. If it is, then the car is disabled.
2. cValue.length < 6: This checks if the length of the cValue (which is likely a string value) is less than 6. If it is, then the car is disabled.
3. (type === 1 && cValue.length > 10): This checks if the type is equal to 1 and the length of cValue is greater than 10. If both conditions are true, then the car is disabled.
Overall, if any of these three conditions are true, then the car is considered disabled.