LeetCode 30 — Substring with Concatenation of All Words(与所有单词相关联的字串)
Youaregivenastring,s,andalistofwords,words,thatareallofthesamelength.Findallstartingindicesofsubstring(s)insthatisaconcatenationofeachwordinwordsexactlyonceandwithoutanyinterveningcharacters.Example1