摘要:
PalindromesA regular palindrome is a string of numbers or letters that is the same forward as backward. For example, the string"ABCDEDCBA"is a palindrome because it is the same when the string is read from left to right as when the string is read from right to left.A mirrored string is a s 阅读全文
摘要:
Automatic EditingText-processing tools likeawkandsedallow you to automatically perform a sequence of editing operations based on a script. For this pr... 阅读全文