Package g0201_0300.s0274_h_index

Class Solution

java.lang.Object
g0201_0300.s0274_h_index.Solution
public class Solution extends java.lang.Object
274 - H-Index.

Medium

Given an array of integers citations where citations[i] is the number of citations a researcher received for their ith paper, return compute the researcher’s h -index.

According to the definition of h-index on Wikipedia: A scientist has an index h if h of their n papers have at least h citations each, and the other n \u2212 h papers have no more than h citations each.

If there are several possible values for h, the maximum one is taken as the h -index.

Example 1:

Input: citations = [3,0,6,1,5]

Output: 3

Explanation:

 [3,0,6,1,5] means the researcher has 5 papers in total and each of them had received 3, 0, 6, 1, 5 citations respectively.
 Since the researcher has 3 papers with at least 3 citations each and the remaining two with no more than 3 citations each, their h-index is 3.

Example 2:

Input: citations = [1,3,1]

Output: 1

Constraints:

  • n == citations.length
  • 1 <= n <= 5000
  • 0 <= citations[i] <= 1000

  • Constructor Summary

    Constructors
    Constructor
    Description
    Solution()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    int
    hIndex(int[] citations)
     

    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

    • hIndex

      public int hIndex(int[] citations)