1.最简单的方法:
public static String reverse1(String str)
{
return new StringBuffer(str).reverse().toString();
}
2.最常用的方法:
public static String reverse3(String s)
{
char[] array = s.toCharArray();
String reverse = “”;
//注意这是空串,不是null
for (int i = array.length – 1; i >= 0; i–)
reverse += array[i];
return reverse;
}
3.常用方法的变形:
public static String reverse2(String s)
{
int length = s.length();
String reverse = “”;
//注意这是空串,不是null
for (int i = 0; i < length; i++)
reverse = s.charAt(i) + reverse;//在字符串前面连接,
而非常见的后面
return reverse;
}
4.C语言中常用的方法:
public static String reverse5(String orig)
{
char[] s = orig.toCharArray();
int n = s.length – 1;
int halfLength = n / 2;
for (int i = 0; i <= halfLength; i++) {
char temp = s[i];
s[i] = s[n – i];
s[n – i] = temp;
}
return new String(s);
//知道
char数组和String相互转化
}