g0201_0300.s0274_h_index

Class Solution

java.lang.Object

g0201_0300.s0274_h_index.Solution

public class Solution
extends 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 − 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 and Description
Solution()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

Solution

public Solution()

Method Detail

hindex

public int hindex(int[] citations)