Package g0601_0700.s0697_degree_of_an_array

Class Solution

java.lang.Object
g0601_0700.s0697_degree_of_an_array.Solution
public class Solution extends java.lang.Object
697 - Degree of an Array.

Easy

Given a non-empty array of non-negative integers nums, the degree of this array is defined as the maximum frequency of any one of its elements.

Your task is to find the smallest possible length of a (contiguous) subarray of nums, that has the same degree as nums.

Example 1:

Input: nums = [1,2,2,3,1]

Output: 2

Explanation:

 The input array has a degree of 2 because both elements 1 and 2 appear twice.
 Of the subarrays that have the same degree:
 [1, 2, 2, 3, 1], [1, 2, 2, 3], [2, 2, 3, 1], [1, 2, 2], [2, 2, 3], [2, 2]
 The shortest length is 2. So return 2.

Example 2:

Input: nums = [1,2,2,3,1,4,2]

Output: 6

Explanation:

 The degree is 3 because the element 2 is repeated 3 times.
 So [2,2,3,1,4,2] is the shortest subarray, therefore returning 6.

Constraints:

  • nums.length will be between 1 and 50,000.
  • nums[i] will be an integer between 0 and 49,999.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    findShortestSubArray(int[] nums)
     

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • Solution

      public Solution()

  • Method Details

    • findShortestSubArray

      public int findShortestSubArray(int[] nums)