# Slot Game

Posted: 6 Mar, 2021
Difficulty: Easy

## PROBLEM STATEMENT

#### Note:

``````A slot that has been counted as a perfect hit can never count as a pseudo-hit.
``````

#### Example:

``````Original String = “RGYB” and Guess String = “YGRR”.
`````` ``````The second slot of both the guess and original matches, hence it’s a perfect hit. The guess string contains yellow, which is also present in the original string but not at the same slot as the guess slot. Hence it’s a pseudo hit. The guess string also contains two red slots, but the original string contains only one red which is also not at the same slot as the guess string; hence it is also a pseudo hit. Therefore total points will be 2+1+1= 4.
``````
##### Input Format:
``````The first line of the input contains an integer T denoting the number of test cases.

The first line of each test contains a string ‘original’, representing the original color of four slots.

The second line of each test case contains a string, ‘guess,’ representing the guessed color of four slots.
``````
##### Output Format:
``````For every test case, print the total number of points that you have scored.
``````
##### Note :
``````You do not need to print anything; it has already been taken care of. Just implement the given function.
``````
##### Constraints:
``````1 <= T <= 5
length(original) = length(guess) = 4

Time limit: 1 sec
`````` Approach 1

We will check for each slot, whether it’s a perfect hit or a pseudo hit.

Below is the detailed algorithm:

1. Maintain an integer variable 'POINTS' to store the points scored.
2. Run a loop from(loop variable ‘i’) from 0 till 4 to calculate the perfect hits.
1. If 'ORIGINAL[i]' = 'GUESS[i]', we increment 'POINTS' by two since it’s a perfect hit, and then update both 'ORIGINAL[i]' and 'GUESS[i]' to ‘#’ so that we don’t count them again while calculating pseudo hits.
3. Run a loop from(loop variable ‘i’) from 0 till 4 to calculate the pseudo hits.
1. If 'GUESS[i]' is not equal to ‘#,’ then run another loop(loop variable ‘j’) to find if 'GUESS[i]' exists in the original slot or not.
1. If 'ORIGINAL[j]' = 'GUESS[i]', increment 'POINTS' by 1 and update both 'ORIGINAL[j]' and 'GUESS[i]' to ‘#’ so that we don’t count them again.

Return 'POINTS'.