onlyou2030的博客

题目： Given an array of strings, group anagrams together. For example, given: ["eat", "tea", "tan", "ate", "nat", "bat"],  Return: [ ["ate", "eat","tea"], ["nat","tan"], ["bat"] ]

题目： Given a string S and a string T, find the minimum window in S which will contain all the characters in T in complexity O(n). For example, S = "ADOBECODEBANC" T = "ABC" Minimum windo