Given a binary search tree, write a function kthSmallest to find the kth
smallest element in it.
Note:
You may assume k is always valid, 1 ≤ k ≤ BST's total elements.
Follow up:
What if the...
分类:
其他好文 时间:
2015-07-02 10:09:45
阅读次数:
110
Given a binary search tree, write a functionkthSmallestto find thekth smallest element in it.Note:You may assume k is always valid, 1 ≤ k ≤ BST's tota...
分类:
其他好文 时间:
2015-07-02 09:53:05
阅读次数:
128
1. 问题描述 找出数组中第k大的数,注意:数组为无序数组。
2. 方法与思路 是一道经典算法题。解法也有好几种,一种是先进行排序,然后取出第k大的数;由于排序算法最快效率为O(nlogn)O(nlogn),所以整体效率为O(nlogn)O(nlogn)。二是使用优先队列,SLT中有优先队列的用法,内部是以堆的方式实现。时间效率也比较高,O(nlogn)O(nlogn)。
class...
分类:
其他好文 时间:
2015-06-29 10:19:30
阅读次数:
97
Description:Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct eleme...
分类:
其他好文 时间:
2015-06-26 00:19:23
阅读次数:
113
Description:Given an index k, return the kth row of the Pascal's triangle.For example, given k = 3, Return [1,3,3,1].public class Solution { public...
分类:
其他好文 时间:
2015-06-19 22:58:21
阅读次数:
172
Find thekth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.For exampl...
分类:
其他好文 时间:
2015-06-16 14:43:22
阅读次数:
161
【重要的事情写在前面】先来说说swap的实现方式,这道题我本来自己写了个swap的算法,除了通常的swap(type& a, type& b){ type t = a; a = b; b = a;}的写法外,还有一种【极客】写法:swap(type& a, type& b){ a ^= b;...
分类:
其他好文 时间:
2015-06-14 15:06:14
阅读次数:
131
Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.For example,
Given[3,2,1,5,6,4]and k = 2, return 5.Note:...
分类:
其他好文 时间:
2015-06-14 09:34:25
阅读次数:
120
Find the kth largest element in an unsorted array. Note that it is the kth largest element in the sorted order, not the kth distinct element.For examp...
分类:
编程语言 时间:
2015-06-09 23:30:58
阅读次数:
237
英文描述:Design an algorithm to find the kth number such that the only prime factorsare 3, 5, and 7思路:质因数只能为3,5,7,设这个数为val,则val = (3^i)(5^j)(7^n) (i,j,n>=...
分类:
其他好文 时间:
2015-06-09 19:35:03
阅读次数:
92