Reverse string in java

Question

String s="hello";
int length=s.length();
String s1="";
for(int j=1;j<=length; j++)
{
s1+=s[length-j]; // shows me error here ..array required but string found

System.out.println(s1);
}

how to rectify it?? help me plz

Answer 1

String s="hello";
int n=0,length=s.length();
String f,r="";
while(n<length)
{
f=s.Substring(n,n+1);
r=f.concat(r);
n++;
}

System.out.print(r);

//see this ☺

Answer 2

dude ... s is not string array ... thats the mistake

Answer 3

@sahil

replace "Substring" by "substring" ,

by mistake i written the method name initial as capital & java is case sensitive

//it is working now ☺👍

Answer 4

More effecient than subString:

String myString = "theString";
char[] array = myString.toCharArray();

for(int i = 0; i < array.length / 2; i++){
char temp = array[i];
array[i] = array[array.length - i - 1];
array[array.length - i - 1] = temp;
}
myString = String.valueOf(array);

Answer 5

String s = "string";
StringBuilder sb = new StringBuilder(s);
System.out.println(sb.reverse());

Answer 6

@Gaurav Agrawal
hii bro....
this code is giving error in line
s.Substring(n,n+1)...
rectify your own self.....

Answer 7

@Gaurav ...ohh thnks buddy

Answer 8

import java.util.Scanner;

public class Program
{
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String text = scanner.nextLine();
char[] arr = text.toCharArray();
for(int i=arr.length-1;i>=0;i--)
{
System.out.println(arr[i]);
}// Just we start printing from back side

}
}

Answer 9

but if I give in string array [0] I'll put hello into them not h