Solution (leetcode-in-java 1.19 API)

java.lang.Object
- g1201_1300.s1227_airplane_seat_assignment_probability.Solution

```
public class Solution
extends Object
```
1227 - Airplane Seat Assignment Probability.
Medium

n passengers board an airplane with exactly n seats. The first passenger has lost the ticket and picks a seat randomly. But after that, the rest of the passengers will:
- Take their own seat if it is still available, and
- Pick other seats randomly when they find their seat occupied
Return the probability that the n^th person gets his own seat.

Example 1:

Input: n = 1

Output: 1.00000

Explanation: The first person can only get the first seat.

Example 2:

Input: n = 2

Output: 0.50000

Explanation: The second person has a probability of 0.5 to get the second seat (when first person gets the first seat).

Constraints:
- 1 <= n <= 10⁵

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Solution()
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  double nthPersonGetsNthSeat(int n)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- Solution
```
public Solution()
```

Method Detail

nthPersonGetsNthSeat

public double nthPersonGetsNthSeat(int n)