摘要：
Problem Definition:Implement strStr().Returns the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.Solutio... 阅读全文
摘要：
Problem Definition:Given a string s consists of upper/lower-case alphabets and empty space characters ' ', return the length of last word in the strin... 阅读全文
摘要：
Problem Definition：Given a non-negative number represented as an array of digits, plus one to the number.The digits are stored such that the most sign... 阅读全文