在介紹Python的self用法之前，先來介紹下Python中的類和實例……我們知道波丰，面向?qū)ο笞钪匾母拍罹褪穷悾╟lass）和實例（insta...

題目描述 Given a string S and a string T, find the minimum window in S which...

題目描述 Given two words word1 and word2, find the minimum number of steps r...

題目描述 Given two binary trees, write a function to check if they are equal...

題目描述 Merge k sorted linked lists and return it as one sorted list. Analy...

題目描述 Given two words (beginWord and endWord), and a dictionary's word li...

題目描述 Given a non-empty string s and a dictionary wordDict containing a l...

題目描述 Given a linked list, reverse the nodes of a linked list k at a time...