写一个方法，实现字符串的反转，如：输入abc，输出cba

写一个方法，实现字符串的反转，如：输入abc，输出cba

public static void main(String[] args) {
String a="abc";
String b="";
for (int i = 0; i < a.length(); i++) {
b=b+a.charAt(2-i);
System.out.println(b);
}
}

}

string mystring = "你们好";
char[] mychars = mystring.ToCharArray();
Array.Reverse(mychars);
textBox2.Text = new string(mychars);
输出即为“好们你”

public String revStr(String str){
char[] strs =str.toCharArray();
str="";
for (int i = strs.length-1; i >= 0; i--) {
str+=strs[i];
}
return str;
}
public String revStr1(String str){
String resStr = "";
for (int i = str.length()-1; i >=0; i--) {
resStr += str.charAt(i);
}
return resStr;
}