**Objective: **Given an array, write a java program to sort the indexes of the array according to the elements of the given array ( do not sort the given array)

**Example:**

Input Array: [5, 6, 1, 2, 8, 4, 3, 0] Sorted indices as per input array: [7, 2, 3, 6, 5, 0, 1, 4] Input Array: [4, 3, 2, 1] Sorted indices as per input array: [3, 2, 1, 0] Input Array: [1, 2, 3, 4] Sorted indices as per input array: [0, 1, 2, 3]

**Approach:**

Create an array of indices and store 0 to n-1 (n is the size of the given array). Now sort the array by overriding the Comparator in which you will compare the elements of the given array for indices array.

**Java Code:**

**Output:**

Input Array: [5, 6, 1, 2, 8, 4, 3, 0] Sorted indices as per input array: [7, 2, 3, 6, 5, 0, 1, 4]