# Sorted Permutation Rank InterviewBit Solution

**Problem: **__Sorted Permutation Rank__

**Problem Description:**

Given a string, find the rank of the string amongst its permutations sorted lexicographically. Assume that no characters are repeated.

**Example :**

```
Input : 'acb'
Output : 2
The order permutations with letters 'a', 'c', and 'b' :
abc
acb
bac
bca
cab
cba
```

The answer might not fit in an integer, so return your answer % 1000003.

## Approach

Refer the problem __Sorted Permutation Rank with Repeats__**.** The approach & solution to the problem is exactly the same, except that we are not considering the frequency of character because, in this problem, characters are unique without repeat.

## Time & Space Complexity

`Time Complexity: O(N^2)`

- For every index we are traversing the string, to find the number of character lesser than the current one.

`Space Complexity: O(1)`

- Apart from the space taken by our input array, we have taken the constant amount of space, independent of the size of the string.

**Solution:**

Code in C++