題⽬描述
彙編語⾔中有⼀種移位指令叫做循環左移( ROL ),現在有個簡單的任務,就是⽤字符串模擬這個指令的運算結果。對於⼀個給定的字符序列 S ,請你把其循環左移 K 位後的序列輸出。例如,字符序列S=”abcXYZdef” ,要求輸出循環左移3位後的結果,即“ XYZdefabc ”。是不是很簡單?OK,搞定它!
思路及解答
這道題⽬的意思就是將前⾯ n 位,移動到後⾯,那麼我們可以直接從第
題目
Given a list of words, each word consists of English lowercase letters.
Let's sayword1is a predecessor ofword2if and only if we can add exactly one letter anywhere inword1to make it
The Completely Automated Public Turing test to tell Computers and Humans Apart (CAPTCHA) has become ingrained in internet browsing since personal computers gained momentum in the consumer electronic