Update h-index.js

lightningtgc · lightningtgc · commit 1e33f7aff20a · 2015-10-23T10:12:31.000+08:00
diff --git a/leetcode/h-index.js b/leetcode/h-index.js
@@ -2,4 +2,12 @@
 /**
 * URL: https://leetcode.com/problems/h-index/
 *
+* 题目：
+* 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.
 */
