hongchun_z

摘要： Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.The brackets must close in the c... 阅读全文

摘要： Given a sorted array, remove the duplicates in place such that each element appear only once and return the new length.Do not allocate extra space for... 阅读全文

摘要： mplement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.int strStr(char *haystack, ... 阅读全文