Package g0701_0800.s0781_rabbits_in_forest

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    781 - Rabbits in Forest.

    Medium

    There is a forest with an unknown number of rabbits. We asked n rabbits "How many rabbits have the same color as you?" and collected the answers in an integer array answers where answers[i] is the answer of the <code>i<sup>th</sup></code> rabbit.

    Given the array answers, return the minimum number of rabbits that could be in the forest.

    Example 1:

    Input: answers = 1,1,2

    Output: 5

    Explanation:

    The two rabbits that answered "1" could both be the same color, say red.

    The rabbit that answered "2" can't be red or the answers would be inconsistent.

    Say the rabbit that answered "2" was blue.

    Then there should be 2 other blue rabbits in the forest that didn't answer into the array.

    The smallest possible number of rabbits in the forest is therefore 5: 3 that answered plus 2 that didn't.

    Example 2:

    Input: answers = 10,10,10

    Output: 11

    Constraints:

    • 1 &lt;= answers.length &lt;= 1000

    • 0 &lt;= answers[i] &lt; 1000

    • Nested Class Summary

      Nested Classes 
      Modifier and Type Class Description

    • Field Summary

      Fields 
      Modifier and Type Field Description

    • Constructor Summary

      Constructors 
      Constructor Description
      Solution()

    • Enum Constant Summary

      Enum Constants 
      Enum Constant Description

    • Method Summary

      Modifier and Type Method Description
      final Integer numRabbits(IntArray answers)

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait