Package g0401_0500.s0414_third_maximum_number

Class Solution

  • All Implemented Interfaces:
    
public final class Solution

    414 - Third Maximum Number\.

    Easy

    Given an integer array nums, return the third distinct maximum number in this array. If the third maximum does not exist, return the maximum number.

    Example 1:

    Input: nums = 3,2,1

    Output: 1

    Explanation: The first distinct maximum is 3. The second distinct maximum is 2. The third distinct maximum is 1.

    Example 2:

    Input: nums = 1,2

    Output: 2

    Explanation: The first distinct maximum is 2. The second distinct maximum is 1. The third distinct maximum does not exist, so the maximum (2) is returned instead.

    Example 3:

    Input: nums = 2,2,3,1

    Output: 1

    Explanation: The first distinct maximum is 3. The second distinct maximum is 2 (both 2's are counted together since they have the same value). The third distinct maximum is 1.

    Constraints:

    • <code>1 <= nums.length <= 10<sup>4</sup></code>

    • <code>-2<sup>31</sup><= numsi<= 2<sup>31</sup> - 1</code>

    Follow up: Can you find an O(n) solution?

    • 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 thirdMax(IntArray nums)

      • Methods inherited from class java.lang.Object

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