How would you print just the 10th line of a file? For example, assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line 10 [show hi…

How would you print just the 10th line of a file? For example, assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line 10 Hint: 1.…

Given a text file file.txt, print just the 10th line of the file. Example: Assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line…

Given a text file file.txt, print just the 10th line of the file. Example: Assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line…

How would you print just the 10th line of a file? For example, assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line 10 最简单的首先就是…

首先介绍题目中要用的4个Shell命令 sed awk head tail的常用方法.(打好地基,才能建成高楼!) sed:(转自:http://www.cnblogs.com/barrychiao/archive/2012/09/27/2706300.html) 1.定位行 sed命令用来处理文本,在处理前首先要找得到待处理的行,这是逻辑上必须的.所以需要首先定位,然后对定位到的各行进行各种处理,包括插入,删除,替换等.sed -n '10p' testfile // sed命令默认会打印出经…

Given a text file file.txt, print just the 10th line of the file. Example: Assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line…

Given a text file file.txt, print just the 10th line of the file. Example: Assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line…

Given a text file file.txt, print just the 10th line of the file. Example: Assume that file.txt has the following content: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line…

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 477 Total Hamming Distance 44.10% Meidum 475 Heaters  30.20% Easy 474 Ones and Zeroes  34.90% Meidum 473 Matchsticks to Square  31.80% Medium 472 Concatenated Words 29.20% Hard…

Write a bash script to calculate the frequency of each word in a text file words.txt. For simplicity sake, you may assume: words.txt contains only lowercase characters and space ' ' characters. Each word must consist of lowercase characters only. Wor…

LinkedIn(39) 1 Two Sum 23.0% Easy 21 Merge Two Sorted Lists 35.4% Easy 23 Merge k Sorted Lists 23.3% Hard 33 Search in Rotated Sorted Array 30.2% Hard 34 Search for a Range 29.1% Medium 46 Permutations 35.7% Medium 47 Permutations II 28.0% Medium 50…

1150. Page Numbers Time limit: 1.0 secondMemory limit: 64 MB John Smith has decided to number the pages in his notebook from 1 to N. Please, figure out the number of zeros, ones, twos, …, nines he might need. Input One number N (1 ≤ N < 109). Output…

Linux下diff与patch命令的配合使用 在Linux下,diff与patch命令配合使用可以进行简单的代码维护工作. [A] diffdiff命令用于比较文件的差异,可以用于制作patch文件.但此命令参数众多.格式多样,所以在此仅介绍较常用的格式.例如有以下2个文件,源文件为old/test.txt,经修改后的新文件为new/test.txt,其内容分别如下: old/test.txt:This is the first line!This is the second line!Thi…

195. Tenth Line -- 第十行 How would you print just the 10th line of a file? Solution: awk 'NR==10' file.txt 194. Transpose File -- 转置文件 Given a text file file.txt, transpose its content. You may assume that each row has the same number of columns and ea…

本节内容 1. 三剑客简介 2. sed命令详解 3. awk命令详解 文本处理三剑客 在 Shell 下使用这些正则表达式处理文本最多的命令有下面几个工具: 命令                描述                       grep 默认不支持扩展表达式,加-E 选项开启 ERE.如果不加-E 使用花括号要加转义符\{\} egrep 支持基础和扩展表达式 awk 支持 egrep 所有的正则表达式 sed 默认不支持扩展表达式,加-r 选项开启 ERE.如果不加-r 使用…

请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift    说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序        号 题名Title 难度     Difficulty  两数之…

题目一: 给定一个文本文件 file.txt,请只打印这个文件中的第十行. 示例: 假设 file.txt 有如下内容: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 你的脚本应当显示第十行: Line 10 说明: 如果文件少于十行,你应当输出什么? 至少有三种不同的解法,请尝试尽可能多的方法来解题. # Read from the file file.txt and output the tent…

1.Tenth Line How would you print just the 10th line of a file? For example, assume that file.txt has the following content:Line 1Line 2Line 3Line 4Line 5Line 6Line 7Line 8Line 9Line 10 Your script should output the tenth line, which is:Line 10-------…

题目链接  Problem 1688 Binary land Accept: 72    Submit: 171Time Limit: 1000 mSec    Memory Limit : 32768 KB  Problem Description Daxia liked a game named “binary land” (双企鹅,一款家机游戏) when he was a child. Now, we will solve the problem about this game.You…

给定一个文本文件 file.txt,请只打印这个文件中的第十行. 示例: 假设 file.txt 有如下内容: Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 你的脚本应当显示第十行: Line 10 说明: 1. 如果文件少于十行,你应当输出什么? 2. 至少有三种不同的解法,请尝试尽可能多的方法来解题. # Read from the file file.txt and output the ten…

195. Tenth Line 输出file.txt中的第十行 答案: # Read from the file file.txt and output the tenth line to stdout. #!/bin/bash cat file.txt | sed -n '10p' 193. Valid Phone Numbers 找出file.txt中符合(xxx) xxx-xxxx or xxx-xxx-xxxx格式的电话号码 答案: cat file.txt | grep '^(\([0…

1．获取第k行(以k=10为例) 要注意的是,如果文件包含内容不足10行,应该不输出． # Read from the file file.txt and output the tenth line to stdout. # 解法一,使用awk awk 'NR == 10' file.txt # 解法二,使用sed(个人测试结果:sed方法比awk快) sed -n '10p' file.txt # 解法三,组合使用tail与head file.txt | head -n1 # 另外,以下这种方…

tail命令用于输入文件中的尾部内容.tail命令默认在屏幕上显示指定文件的末尾10行. 如果给定的文件不止一个,则在显示的每个文件前面加一个文件名标题.     (1)用法: 用法:   tail [必要参数] [选择参数]   [文件] 如果没有指定文件或者文件名为“-”,则读取标准输入.     (2)功能: 功能:  输出文件的末尾部分     (3)选项参数: 1) -n <k行数>                                     显示文件末尾k行内容 2)…

在Linux下,diff与patch命令配合使用可以进行简单的代码维护工作. [A] diff diff命令用于比较文件的差异,可以用于制作patch文件.但此命令参数众多.格式多样,所以在此仅介绍较常用的格式. 例如有以下2个文件,源文件为old/test.txt,经修改后的新文件为new/test.txt,其内容分别如下: old/test.txt: This is the first line! This is the second line! This is the third line…

195. Tenth Line #!/bin/bash i= cat file.txt | while read line do #echo $line ] then echo $line fi let i=i+ done 194. Transpose File # Read from the file file.txt and print its transposed content to stdout. ############################################…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

All LeetCode Questions List 题目汇总 Sorted by frequency of problems that appear in real interviews. Last updated: October 2, 2017Google (214)534 Design TinyURL388 Longest Absolute File Path683 K Empty Slots340 Longest Substring with At Most K Distinct C…

本节内容 1. 三剑客简介 2. sed命令详解 3. awk命令详解 文本处理三剑客 在 Shell 下使用这些正则表达式处理文本最多的命令有下面几个工具: |                 命令 |                描述 | | grep | 默认不支持扩展表达式,加-E 选项开启 ERE.如果不加-E 使用花括号要加转义符\{\} | | egrep | 支持基础和扩展表达式 | | awk | 支持 egrep 所有的正则表达式 | | sed | 默认不支持扩展表达式,…

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 如果各位看官们,大神们发现了任何错误,或是代码无法通过OJ,或是有更好的解法,或是有任何疑问,意见和建议的话,请一定要在对应的帖子下面评论区留言告知博主啊(如果不方便注册博客园的话,可以下载下文提到的APP,在Feedback中给博主发邮件交流哈),同时也请大家踊跃地,大量地,盲目地提供各个题目的follow up一起讨论哈,多谢多谢,祝大家刷得愉快…