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 ...
分类:
其他好文 时间:
2017-01-05 07:50:54
阅读次数:
139
There is a simple rule of thumb to tell you when to use == or is. == is for value equality. Use it when you would like to know if two objects have the ...
分类:
编程语言 时间:
2016-12-27 13:38:40
阅读次数:
174
a method is named and attached to an object. so, for example, a method is like a function but is contained inside a class. its scope is limited to tha ...
分类:
其他好文 时间:
2016-12-27 07:29:12
阅读次数:
141
The Company Dynamic Rankings has developed a new kind of computer that is no longer satisfied with the query like to simply find the k-th smallest num ...
分类:
其他好文 时间:
2016-12-27 00:25:40
阅读次数:
130
set 添加一个无序的,用set方法,访问速度快,天生解决了重复问题 1、difference 指定某个元素从原来set取出,并生成新的set 2、difference_update 删除原来set里某个元素 3、pop 删除某个元素 4、remove 删除指定元素 这里举一个例子,更新、删除、添加 ...
分类:
编程语言 时间:
2016-12-24 01:31:37
阅读次数:
225
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is th ...
分类:
其他好文 时间:
2016-12-23 07:40:57
阅读次数:
240
本题的特点在于两个list nums1和nums2都是已经排序好的。本题如果把所有的(i, j)组合都排序出来,再取其中最小的K个。其实靠后的很多组合根本用不到,所以效率较低,会导致算法超时。为了简便,把nums1和nums2里面的元素写成A1,A2,...,A5, B1,...,B5. 维护一个最 ...
分类:
其他好文 时间:
2016-12-22 06:47:17
阅读次数:
169
So the first question is: what is the difference between this and #297? This here is BST, however, in #297, it's BT. "The encoded string should be as ...
分类:
其他好文 时间:
2016-12-21 07:42:40
阅读次数:
214
It's also worth noting that you can use * and ** when calling functions as well. This is a shortcut that allows you to pass multiple arguments to a fu ...
分类:
编程语言 时间:
2016-12-20 18:11:45
阅读次数:
195
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 ...
分类:
其他好文 时间:
2016-12-18 22:58:18
阅读次数:
190