Leetcode刷题(Reverse String)

Java反转字符串

最新推荐文章于 2025-09-06 09:33:29 发布

mxy940127

最新推荐文章于 2025-09-06 09:33:29 发布

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分类专栏： java自学文章标签： java string

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本文提供了一种简单的Java方法来反转输入的字符串。通过使用StringBuffer类的reverse()方法，可以轻松地实现字符串的反转。

问题描述：Write a function that takes a string as input and returns the string reversed

Example:
Given s = "hello", return "olleh".

此题很简单，使用java StringBuffer下reverse命令即可

最简单的方法：

public class Solution
{
       public String reverseString(String s)
            {
                return new StringBuffer(s).reverse().toString();

            }
}

即：

public class Solution
{
       public String reverseString(String s)
            {
                 StringBuffer b = new StringBuffer(s);
                 return b.reverse().toString();
            }
}

StringBuffer(String str)

Constructs a string buffer initialized to the contents of the specified string.

reverse()

Causes this character sequence to be replaced by the reverse of the sequence.

toString()

This object (which is already a string!) is itself returned.