Example Analysis of string in LeetCode
The editor will share with you the sample analysis of strings in LeetCode. I hope you will get something after reading this article. Let's discuss it together.
A string is a finite sequence of 0 or more characters, generally referred to as s=a1a2a3. An, a data type that represents text in a programming language
A string and an array have many similarities, such as using the name [subscript] to get a character
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The characteristics of a string
1. The basic operation object of a string is usually the whole or substring of the string.
The Operand is easy to understand as a whole, but why not a single character but a substring?
For example: "I Like you", this is a string, when you reverse output according to a single character, it becomes like "uoy ekiL I". Such a string is meaningless. We usually expect the word after the reverse output of the string to retain the original structure "you Like I".
Where each word is a substring of the original string
two。 String manipulation is much more complex than other data types.
For example, string comparison and concatenation operations (explained in detail next)
Comparison of strings
Strings have their own comparison functions, but are related to the programming language:
Due to Python, C++. Operator overloading is supported, using "=" comparison
Because of Java. Operator overloading is not supported and the above equal sign cannot be used.
Caterpillar:
Java:
Concatenation operation of string
Strings can be mutable or immutable in different programming languages
String immutable in Python
At C++. The string in is mutable and can be modified like an array
In JAVA, Python. Medium string is immutable
Caterpillar:
Python:
In programming languages where strings are immutable, string concatenation results in bug, because it is immutable, and even if you modify only one of the characters, you have to create a new string
C++. String concatenation can be done directly by using for loop.
Java, Python. You need to create a new string and allocate enough space before concatenating, and assign the contents of the old string to the new string.
Caterpillar:
Java:
After reading this article, I believe you have some understanding of "sample Analysis of strings in LeetCode". If you want to know more about it, you are welcome to follow the industry information channel. Thank you for reading!
