### Program to Find position from which sorted array has been rotated in java

In this core java programming tutorial we will Write a Program to Find position from which sorted array has been rotated in java.
You are given a sorted array but it has been rotated, Find position from which sorted array has been rotated in java.

But how array is rotated?

Let’s understand rotation of array by diagrams -

Our initial array is -

Rotate the array -

Array formed after rotation -

Now, we could say array is rotated from third position i.e. at 1.

Likewise, we rotated String in rotational palindrome.

Let’s take few more example arrays in java >
1, 2, 3, 4  - Array has not been rotated

2, 3, 4, 1  - Array has been rotated from 3 position

3, 4, 1, 2  - Array has been rotated from 2 position

4, 1, 2, 3  - Array has been rotated from 1 position

Example/ Full Program/SourceCode to Find position from which sorted array has been rotated in java >
 /** Copyright (c), AnkitMittal JavaMadeSoEasy.com */ public class FindPositionFromWhichSortedArrayRotatedExample {       public static void main(String[] args) {           int ar[] = { 4, 1, 2, 3 };           for (int n : ar)                  System.out.print(n + " ");           System.out.print(" : ");                     for (int i = 0; i < ar.length; i++) {                  if (i + 1 == ar.length) {                        System.out.println("Array has not been rotated");                  } else {                        if (ar[i] > ar[i + 1]) {                               System.out.println("Array has been rotated from " + (i+1)                                             + " position");                               break;                        }                  }           } //end for loop    } } /* output 4 1 2 3  : Array has been rotated from 1 position */

So in this core java programming tutorial we wrote a Program to Find position from which sorted array has been rotated in java.
You were given a sorted array but it was rotated, we found position from which sorted array was rotated in java.

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