irun的技术成长园

摘要： 修改/etc/fstab, /etc/rc.d/rc.sysinit, /etc/rc.local等系统启动文件时误操作就会造成linux无法进入,有rescue盘可以容易修复.下述方法适合于没有rescue盘时修复系统.grub菜单中选择linux,按e,e,进入编辑模式,kernel (hd0,... 阅读全文

摘要： 类型转换 int(x [,base ]) 整数 long(x [,base ]) 长整数 float(x ) 浮点数 complex(real [,imag ]) 复数 str(x ) 字符串 repr(x ) 表达式字符串 eval(str ) 用来计算在字符串中的有效Python表达式,并返回一 阅读全文

摘要： I.Given an array of integers, every element appearstwiceexcept for one. Find that single one.Note:Your algorithm should have a linear runtime complexi... 阅读全文

摘要： 1.以前的方法如果是要获得程序运行的当前目录所在位置，那么可以使用os模块的os.getcwd()函数。如果是要获得当前执行的脚本的所在目录位置，那么需要使用sys模块的sys.path[0]变量或者sys.argv[0]来获得。实际上sys.path是Python会去寻找模块的搜索路径列表，sys... 阅读全文

摘要： 1. /home/lvtest/test/test.py from datetime import datetimenow=datetime.now()f=open('test.log','a')f.write('%s '%now)f.close()2. edit/etc/rc.local wit... 阅读全文

摘要： Moduleoptparse from optparse import OptionParser def opt(): usage = "usage: %prog [options] arg" parser = OptionParser(usage=usage) entries ... 阅读全文

摘要： Write a program to find the node at which the intersection of two singly linked lists begins.For example, the following two linked lists:A: a... 阅读全文

摘要： Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana... 阅读全文

摘要： Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.Tags：Link... 阅读全文

摘要： Given two stringssandt, determine if they are isomorphic.Two strings are isomorphic if the characters inscan be replaced to gett.All occurrences of a ... 阅读全文