1209.Remove All Adjacent Duplicates in String II 简单解法
题目:消除字符串中出现的相邻重复字符Givenastrings,akduplicateremovalconsistsofchoosingkadjacentandequallettersfromsandremovingthemcausingtheleftandtherightsideofthedeletedsubstringtoconcatenatetogether.Werepeatedlymake