[LeetCode][JavaScript]H-Index

H-Index

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:

  1. An easy approach is to sort the array first.
  2. What are the possible values of h-index?
  3. A faster approach is to use extra space.

https://leetcode.com/problems/h-index/



h因子,万能的百度百科剧透了解法...

h代表“高引用次数”(high citations),一名科研人员的h指数是指他至多有h篇论文分别被引用了至少h次。

要确定一个人的h指数非常容易,到SCI网站,查出某个人发表的所有SCI论文,让其按被引次数从高到低排列,往下核对,直到某篇论文的序号大于该论文被引次数,那个序号减去1就是h指数。

H-Index II:http://www.cnblogs.com/Liok3187/p/4782660.html

 1 /**
 2  * @param {number[]} citations
 3  * @return {number}
 4  */
 5 var hIndex = function(citations) {
 6     citations = citations.sort(sorting);
 7     var i = 0;
 8     while(i + 1 <= citations[i]){
 9         i++;
10     }
11     return i;
12
13
14     function sorting(a, b){
15         if(a > b){
16             return -1;
17         }else if(a < b){
18             return 1;
19         }else{
20             return 0;
21         }
22     }
23 };
时间: 09-04

[LeetCode][JavaScript]H-Index的相关文章

[LeetCode][JavaScript]Pascal&#39;s Triangle

Pascal's Triangle Given numRows, generate the first numRows of Pascal's triangle. For example, given numRows = 5,Return [ [1], [1,1], [1,2,1], [1,3,3,1], [1,4,6,4,1] ] https://leetcode.com/problems/pascals-triangle/ 杨辉三角. 每行第一个和最后一个是1,其余是pre[i - 1] +

[LeetCode][JavaScript]Maximum Subarray

Maximum Subarray Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [−2,1,−3,4,−1,2,1,−5,4],the contiguous subarray [4,−1,2,1] has the largest sum = 6. https://leetcod

[LeetCode][JavaScript]Sliding Window Maximum

Sliding Window Maximum Given an array nums, there is a sliding window of size k which is moving from the very left of the array to the very right. You can only see the k numbers in the window. Each time the sliding window moves right by one position.

[LeetCode][JavaScript]Longest Palindromic Substring

Longest Palindromic Substring Given a string S, find the longest palindromic substring in S. You may assume that the maximum length of S is 1000, and there exists one unique longest palindromic substring. https://leetcode.com/problems/longest-palindr

[LeetCode][JavaScript]Find Peak Element

Find Peak Element A peak element is an element that is greater than its neighbors. Given an input array where num[i] ≠ num[i+1], find a peak element and return its index. The array may contain multiple peaks, in that case return the index to any one

[LeetCode][JavaScript]Combination Sum III

Combination Sum III Find all possible combinations of k numbers that add up to a number n, given that only numbers from 1 to 9 can be used and each combination should be a unique set of numbers. Ensure that numbers within the set are sorted in ascend

[LeetCode][JavaScript]Shortest Palindrome

Shortest Palindrome Given a string S, you are allowed to convert it to a palindrome by adding characters in front of it. Find and return the shortest palindrome you can find by performing this transformation. For example: Given "aacecaaa", retur

[LeetCode][JavaScript]Count of Smaller Numbers After Self

Count of Smaller Numbers After Self You are given an integer array nums and you have to return a new counts array. The counts array has the property where counts[i] is the number of smaller elements to the right of nums[i]. Example: Given nums = [5,

[LeetCode][JavaScript]Remove Duplicates from Sorted List II

Remove Duplicates from Sorted List II Given a sorted linked list, delete all nodes that have duplicate numbers, leaving only distinct numbers from the original list. For example,Given 1->2->3->3->4->4->5, return 1->2->5.Given 1->