Kth largest element in array
Given an integer array nums and an integer k, return the kth largest element in the array.
Note that it is the kth largest element in the sorted order, not the kth distinct element.
class Solution:
def findKthLargest(self, nums, k):
if not nums: return
pivot = random.choice(nums)
left = [x for x in nums if x > pivot]
mid = [x for x in nums if x == pivot]
right = [x for x in nums if x < pivot]
L, M = len(left), len(mid)
if k <= L:
return self.findKthLargest(left, k)
elif k > L + M:
return self.findKthLargest(right, k - L - M)
else:
return mid[0]Related Problems
A transformation sequence from word beginWord to word endWord using a dictionary wordList is a sequence of words beginWord -> s1 -> s2 -> ... -> sk such that:
Every adjacent pair of words differs by a single letter.
Every si for 1 <= i <= k is in wordList. Note that beginWord does not need to be in wordList.
sk == endWord
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The same number may be chosen from candidates an unlimited number of times. Two combinations are unique if the frequency of at least one of the chosen numbers is different.
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For example, the pair [0, 1], indicates that to take course 0 you have to first take course 1.
Return true if you can finish all courses. Otherwise, return false.
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