Class Solution
java.lang.Object
g1201_1300.s1227_airplane_seat_assignment_probability.Solution
public class Solution
extends java.lang.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 nth
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
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Constructor Summary
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Method Summary
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Constructor Details
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Solution
public Solution()
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Method Details
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nthPersonGetsNthSeat
public double nthPersonGetsNthSeat(int n)
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