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python + selenium webdriver 复合型css样式的元素定位方法
当元素没有id,没有name,没有任何,只有一个class的时候,应该如何去定位这个元素1、页面存在多个div,使用find_elements_by_tag_name("div")[x] 这种方法可以使用,但是要去数第几个div,太坑2、使用find_element_by_class_name(.....
分类:编程语言   时间:2015-11-07 10:46:26    阅读次数:269
lintcode 中等题:find the missing number 寻找缺失的数
题目寻找缺失的数 给出一个包含 0 ..N中N个数的序列,找出0 ..N中没有出现在序列中的那个数。样例N=4且序列为[0, 1, 3]时,缺失的数为2。注意可以改变序列中数的位置。挑战在数组上原地完成,使用O(1)的额外空间和O(N)的时间。解题重新定义一个数组存放排序后的数,空间复杂度和时间复杂...
分类:其他好文   时间:2015-11-06 22:24:28    阅读次数:263
[LeetCode] Perfect Squares
Given a positive integer n, find the least number of perfect square numbers (for example, 1, 4, 9, 16, ...) which sum to n.For example, given n = 12, return 3 because 12 = 4 + 4 + 4; given n = 13, retu...
分类:其他好文   时间:2015-11-06 21:05:22    阅读次数:227
【LeetCode OJ 004】Median of Two Sorted Arrays
题目链接:https://leetcode.com/problems/median-of-two-sorted-arrays/ 题目:There are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall ru...
分类:其他好文   时间:2015-11-06 09:46:52    阅读次数:234
Word Search II
Given a 2D board and a list of words from the dictionary, find all words in the board.Each word must be constructed from letters of sequentially adjac...
分类:其他好文   时间:2015-11-06 01:38:08    阅读次数:296
Word Search
Given a 2D board and a word, find if the word exists in the grid.The word can be constructed from letters of sequentially adjacent cell, where "adjace...
分类:其他好文   时间:2015-11-05 23:58:27    阅读次数:336
[LeetCode]Search for a Range
题目描述:(链接)Given a sorted array of integers, find the starting and ending position of a given target value.Your algorithm's runtime complexity must be i...
分类:其他好文   时间:2015-11-05 23:50:51    阅读次数:193
1 Two Sum
1 Two Sum Given an array of integers, find two numbers such that they add up to a specific target number. The function twoSum should return indices of...
分类:其他好文   时间:2015-11-05 22:15:12    阅读次数:254
POJ 1426 Find The Multiple
题意:给一个整数n,求一个不超过100个数字的只由01组成的非0十进制整数是n的倍数。解法:dp。考虑dp[i][j]表示i个数组成的数modn为j的可能性,则有状态转移方程:foreach dp[i][j]:dp[i + 1][j × 10 % n] = 1, dp[i + 1][(j × 10 ...
分类:其他好文   时间:2015-11-05 22:05:20    阅读次数:236
【LeetCode OJ】Longest Palindromic Substring
题目链接:https://leetcode.com/problems/longest-palindromic-substring/题目:Given a stringS, find the longest palindromic substring inS. You may assume that t...
分类:其他好文   时间:2015-11-05 21:57:51    阅读次数:219
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