分析: 利用排序数组的性质,采用双指针来在时间O(n)和空间O(1)解决。 1.特殊判定, 若数组为空,返回[] 2.定义左指针L=0指向最小元素,定义右指针R=n-1指向最大元素 3.循环条件: L<R 若number[L] + number[R] == target, 则返回[L+1, R+1] 若number[L] + number[R] > target, 说明右边的...
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讲的比较麻烦,不直观,直接看代码吧。 #-*- coding:utf-8 -*-classSolution:#s, pattern都是字符串defmatch(self, s, pattern):#write code herelen_s =len(s) len_pattern=len(pattern)#如果s与pattern都为空,则Trueiflen_s == 0andlen_pattern ==0:returnTrue#如果s不为空,而pattern为空,则False...
(If the above is confusing, “life -=1” is just shorthand for life = life -1, which sets life to one less then what it was before. You can write either version, depending on preference.) Read More:How to Practice Python Coding Online To go one step further, you can only subtract ...
python code practice(一): 快排、归并、堆排的实现,双指针/滑动窗口技术,基本原理就不做介绍了,很基础的数据结构课程知识.私下回顾即可,主要学习代码.1.双指针https://leetcode-cn.com/problems/two-sum-ii-input-array-is-sorted/description/?utm_source=LCUS&utm_me
So, it's time to fill the gaps by zeroing in on one of the most vital skills for the next generation of programmers and engineers: Python coding. Practice Python with these 6 websites Enough said? These websites and resources will help launch kids and teens into Python thanks to engaging...
This exercisecontains 22 different coding questions, programs, and challenges to solveusing if-else conditions,forloops, therange()function, andwhileloops. Topics:Control flow statements,Loop, andwhile loop Python Functions Exercise Practice how to create a function, nested functions, and use the fun...
Coding Practice Q3: Lambdas and Currying 我们可以把一个多个参数的函数转化成一系列高阶的单个参数的函数,这也是lambda表达式的优势所在。在处理单个参数的函数时,这非常有用,之后我们将会有一些样例来展示这点。 编写函数lambda_curry2,它可以用lambda表达式curry任意两个参数的函数。你可以看一下下面的测试案例,...
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掌握列表解析式使用时机的关键,在于不断练习识别那些看上去像列表解析式的问题(practice identifying problems that smell like list comprehensions)。 如果你能将自己的代码改写成类似下面这个for循环的形式,那么你也就可以将其改写为列表解析式: new_things = []for ITEM in old_things: if condition_based_on(ITE...