String reverse output

1. Train of Thought: Convert the string into a string array, and then output it in reverse direction based on the subscript

Public void reverse () {string S = "hello"; char [] C; C = S. tochararray (); // convert to a string array for (INT I = C. length-1; I> = 0; I --) {system. out. print (C [I]); // subscript reverse output }}

2. Use the string charat () method

Public void reverse2 () {string S = "hello"; for (INT I = S. length ()-1; I> = 0; -- I) {system. out. print (S. charat (I); // subscript reverse output }}

3. Call the reverse () method of stringbuffer

public void reverse1() {StringBuffer s = new StringBuffer("hello");System.out.println(s.reverse());}

4. Remove the two sides of the string, recombine them to form a new string, and then output