class Solution(object):
def hIndex(self, citations):
"""
:type citations: List[int]
:rtype: int
"""
citations.sort()
n = len(citations)
for i in xrange(n):
if citations[i] >= (n-i):
return n-i
return 0
https://discuss.leetcode.com/topic/23810/python-o-n-lgn-time-with-sort-o-n-time-with-o-n-space
