package com.fishercoder.solutions;

import java.util.Arrays;

/**
 * Given an array of citations (each citation is a non-negative integer) of a researcher, write a function to compute the researcher's h-index.

 According to the definition of h-index on Wikipedia: "A scientist has index h if h of his/her N papers have at least h citations each, and the other N − h papers have no more than h citations each."

 For example, given citations = [3, 0, 6, 1, 5], which 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, his h-index is 3.

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

 Hint:

 An easy approach is to sort the array first.
 What are the possible values of h-index?
 A faster approach is to use extra space.
 */
public class _274 {

    public int hIndex(int[] citations) {
        if(citations == null || citations.length == 0)
            return 0;

        Arrays.sort(citations);
        for(int i = 0; i < citations.length; i++){
            if(citations[i] >= citations.length - i)
                return citations.length - i;
        }
        return 0;
    }

}

@@ -1064,16 +1064,18 @@
 th == 0)
+ %7B
 %0A       
@@ -1088,16 +1088,26 @@
 eturn 0;
+%0A        %7D
 %0A%0A      
@@ -1235,16 +1235,18 @@
 gth - i)
+ %7B
 %0A       
@@ -1283,16 +1283,30 @@
 th - i;%0A
+            %7D%0A
         

edit 274