cs学徒的周记

简单的临时换一下： pip install web.py -i http://pypi.douban.com/simple --trusted-host pypi.douban.com 来源：https://www.cnblogs.com/hjbf/p/10645347.html 永久改一下： https://blog.youkuaiyun.com/innocent_cat/article/details/90481199?utm_medium=distribute.pc_relevant.none-ta.

Leetcode　9.Palindrome Number 思路是先转换成字符串然后两边双指针检测，代码如下： class Solution(object): def isPalindrome(self, x): """ :type x: int :rtype: bool """ if x<0: ...

Leetcode 8.String to Integer (atoi) 如何将字符串转为有效数字题，代码如下： class Solution(object): def myAtoi(self, str): """ :type str: str :rtype: int """ if str == None...

Leetcode160.Intersection of Two Linked Lists Write a program to find the node at which the intersection of two singly linked lists begins. For example, the following two linked lists: begin to...

Leetcode61.Rotate List Given a linkedlist, rotate the list to the right bykplaces, wherekis non-negative. Example 1: Input: 1->2->3->4->5->NULL, k = 2 Output: 4->5->1-...

Leetcode121.Best Time to Buy and Sell Stock Say you have an array for which theithelement is the price of a given stock on dayi. If you were only permitted to complete at most one transaction ...

Leetcode 88.Merge Sorted Array Given two sorted integer arraysnums1andnums2, mergenums2intonums1as one sorted array. Note: The number of elements initialized innums1andnums2aremandn...

Leetcode 59.Spiral Matrix II Given a positive integern, generate a square matrix filled with elements from 1 ton2in spiral order. Example: Input: 3 Output: [ [ 1, 2, 3 ], [ 8, 9, 4 ], [ 7,...

Leecode54.Spiral Matrix Given a matrix ofmxnelements (mrows,ncolumns), return all elements of the matrix in spiral order. Example 1: Input: [ [ 1, 2, 3 ], [ 4, 5, 6 ], [ 7, 8, 9 ] ] O...

Leetcode15.3Sum Given an arraynumsofnintegers, are there elementsa,b,cinnumssuch thata+b+c= 0? Find all unique triplets in the array which gives the sum of zero. Note: The solutio...

Leetcode16.3Sum Closest Given an arraynumsofnintegers and an integertarget, find three integers innumssuch that the sum is closest totarget. Return the sum of the three integers. You may a...

Leetcode643.Maximum Average Subarray I Given an array consisting ofnintegers, find the contiguous subarray of given lengthkthat has the maximum average value. And you need to output the maximum ...

Leetcode4.Median of Two Sorted Arrays There are two sorted arraysnums1andnums2of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be...