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字符逆序-题解(Python代码) 简单and详细

#字符逆序Python解法##一、Python切片#####1首先我们先来了解可迭代对象的索引![](https://upload-images.jianshu.io/upload_images/14029140-3da45bbfe1029df4.jpg?imageMogr2/auto-orient/

大小写转换 (Java代码)

```javaimportjava.util.Scanner;publicclassMain{publicstaticvoidmain(String[]args){Scannersc=newScanner(System.in);//hasNext()函数,

回文串-题解(Java代码)

```javaimportjava.io.BufferedReader;importjava.io.IOException;importjava.io.InputStreamReader;publicclassMain{publicstaticvoidmain(String[]args)throwsI