name = input("Enter file:") if len(name) < 1 : name = "input.txt" fhand = open(name) counts = dict() for line in fhand: words = line.split() for word in words: # find the value that key is word, if not, return 0 counts[word] = count
Ubuntu14.04 给定一个文本,统计其中单词出现的次数 方法1 # solution 1 grep与awk配合使用,写成一个sh脚本 fre.sh sh fre.sh wordfretest.txt #! /bin/bash# solution 1 ] then echo "Usage:$0 args error" exit fi ] then echo "analyse the first file $1" fi #get the first file fi
Write a program to print a histogram of the lengths of words in its input. It is easy to draw the histogram with the bars horizontal; a vertical orientation is more challenging. 统计输入中单词的长度,并且绘制相应的直方图.水平的直方图比较容易绘制,垂直的直方图较困难一些. /* This program was the
ls命名 man ls -R 递归列出全部的目录内容 recusive -a 列出所有的文件(包括以 . 开头的隐藏文件) all -r 逆序排列 reverse -t 按照时间信息排序 time -S 按照文件大小,大的在前面 文件按照从大到小排序 ls -S 从小到大 ls -Sr Linux统计文件夹内的文件夹个数: ls -l | grep "^-d" | wc -l ls -l 是以行的形式展现文件夹内所有内容 grep "^-d" grep是过滤ls
统计英文article.txt文件中出现hello这个单词的次数 这个是article.txt文件内容 { hello The Royal Navy is trying hello to play hello down the problem, after first trying to hide it. It is clearly embarrassing. They have hello known about the problem for hello some time but they