Check if strings are rotations of each other or not

Given two strings s1 and s2. The task is to check if s2 is a rotated version of the string s1. The characters in the strings are in lowercase.

Example 1:

Input: geeksforgeeks forgeeksgeeks Output: 1 Explanation: s1 is geeksforgeeks, s2 is forgeeksgeeks. Clearly, s2 is a rotated version of s1 as s2 can be obtained by left-rotating s1 by 5 units.

Example 2:

Input: mightandmagic andmagicmigth Output: 0 Explanation: Here with any amount of rotation s2 cant be obtained by s1.

Your Task:
Input 2 strings in different lines and complete the above given task.

Expected Time Complexity: O(N).
Expected Space Complexity: O(N).
Note: N = |s1|.

Constraints:
1 <= |s1|, |s2| <= 10⁷

Solution of Check if strings are rotations of each other or not:–

import java.util.*;
import java.lang.*;
import java.io.*;

public class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		//your code here
      Scanner sc = new Scanner(System.in);
      String s1 = sc.next();
      String s2 = sc.next();

      if (s1.length() != s2.length())
      {
        System.out.print(0);
        return;
      }

        String temp = s1 + s1; //storing concatenated string

        if (temp.indexOf(s2) != -1) {
            System.out.print(1); //returning true if 2nd string is present in concatenated string
        } else {
            System.out.print(0);
        }

	}
}